diff --git a/briar-android/src/org/briarproject/plugins/droidtooth/DroidtoothPlugin.java b/briar-android/src/org/briarproject/plugins/droidtooth/DroidtoothPlugin.java
index 1aff5ba37258f851fd6228fac0b9c5d305e65cf6..a63bbc7ebbc189a19c7d9a47094709caf5e78b40 100644
--- a/briar-android/src/org/briarproject/plugins/droidtooth/DroidtoothPlugin.java
+++ b/briar-android/src/org/briarproject/plugins/droidtooth/DroidtoothPlugin.java
@@ -69,7 +69,7 @@ class DroidtoothPlugin implements DuplexPlugin {
 	private final SecureRandom secureRandom;
 	private final Clock clock;
 	private final DuplexPluginCallback callback;
-	private final int maxFrameLength, maxLatency, pollingInterval;
+	private final int maxLatency, pollingInterval;
 
 	private volatile boolean running = false;
 	private volatile boolean wasDisabled = false;
@@ -81,7 +81,7 @@ class DroidtoothPlugin implements DuplexPlugin {
 
 	DroidtoothPlugin(Executor ioExecutor, AndroidExecutor androidExecutor,
 			Context appContext, SecureRandom secureRandom, Clock clock,
-			DuplexPluginCallback callback, int maxFrameLength, int maxLatency,
+			DuplexPluginCallback callback, int maxLatency,
 			int pollingInterval) {
 		this.ioExecutor = ioExecutor;
 		this.androidExecutor = androidExecutor;
@@ -89,7 +89,6 @@ class DroidtoothPlugin implements DuplexPlugin {
 		this.secureRandom = secureRandom;
 		this.clock = clock;
 		this.callback = callback;
-		this.maxFrameLength = maxFrameLength;
 		this.maxLatency = maxLatency;
 		this.pollingInterval = pollingInterval;
 	}
@@ -98,10 +97,6 @@ class DroidtoothPlugin implements DuplexPlugin {
 		return ID;
 	}
 
-	public int getMaxFrameLength() {
-		return maxFrameLength;
-	}
-
 	public int getMaxLatency() {
 		return maxLatency;
 	}
diff --git a/briar-android/src/org/briarproject/plugins/droidtooth/DroidtoothPluginFactory.java b/briar-android/src/org/briarproject/plugins/droidtooth/DroidtoothPluginFactory.java
index 8cc21085d7a02686ae29b6da33d8348bdea0c274..2b04481c4b6e1f2d0641a734011bf90634d00201 100644
--- a/briar-android/src/org/briarproject/plugins/droidtooth/DroidtoothPluginFactory.java
+++ b/briar-android/src/org/briarproject/plugins/droidtooth/DroidtoothPluginFactory.java
@@ -15,7 +15,6 @@ import android.content.Context;
 
 public class DroidtoothPluginFactory implements DuplexPluginFactory {
 
-	private static final int MAX_FRAME_LENGTH = 1024;
 	private static final int MAX_LATENCY = 30 * 1000; // 30 seconds
 	private static final int POLLING_INTERVAL = 3 * 60 * 1000; // 3 minutes
 
@@ -41,7 +40,6 @@ public class DroidtoothPluginFactory implements DuplexPluginFactory {
 
 	public DuplexPlugin createPlugin(DuplexPluginCallback callback) {
 		return new DroidtoothPlugin(ioExecutor, androidExecutor, appContext,
-				secureRandom, clock, callback, MAX_FRAME_LENGTH, MAX_LATENCY,
-				POLLING_INTERVAL);
+				secureRandom, clock, callback, MAX_LATENCY, POLLING_INTERVAL);
 	}
 }
diff --git a/briar-android/src/org/briarproject/plugins/droidtooth/DroidtoothTransportConnection.java b/briar-android/src/org/briarproject/plugins/droidtooth/DroidtoothTransportConnection.java
index fa38875de088974578aaa8876aab450cb3464c87..e9b645e1c81d8c4efa31f34ac3467c00518c7968 100644
--- a/briar-android/src/org/briarproject/plugins/droidtooth/DroidtoothTransportConnection.java
+++ b/briar-android/src/org/briarproject/plugins/droidtooth/DroidtoothTransportConnection.java
@@ -39,10 +39,6 @@ class DroidtoothTransportConnection implements DuplexTransportConnection {
 
 	private class Reader implements TransportConnectionReader {
 
-		public int getMaxFrameLength() {
-			return plugin.getMaxFrameLength();
-		}
-
 		public long getMaxLatency() {
 			return plugin.getMaxLatency();
 		}
@@ -60,10 +56,6 @@ class DroidtoothTransportConnection implements DuplexTransportConnection {
 
 	private class Writer implements TransportConnectionWriter {
 
-		public int getMaxFrameLength() {
-			return plugin.getMaxFrameLength();
-		}
-
 		public int getMaxLatency() {
 			return plugin.getMaxLatency();
 		}
diff --git a/briar-android/src/org/briarproject/plugins/tcp/AndroidLanTcpPlugin.java b/briar-android/src/org/briarproject/plugins/tcp/AndroidLanTcpPlugin.java
index 6194e2ee8ff107e14f000f867ca3ce0444ab8d4c..a7689bbda817040374156027b5616220025d2f22 100644
--- a/briar-android/src/org/briarproject/plugins/tcp/AndroidLanTcpPlugin.java
+++ b/briar-android/src/org/briarproject/plugins/tcp/AndroidLanTcpPlugin.java
@@ -26,10 +26,9 @@ class AndroidLanTcpPlugin extends LanTcpPlugin {
 	private volatile BroadcastReceiver networkStateReceiver = null;
 
 	AndroidLanTcpPlugin(Executor ioExecutor, Context appContext,
-			DuplexPluginCallback callback, int maxFrameLength, int maxLatency,
+			DuplexPluginCallback callback, int maxLatency,
 			int maxIdleTime, int pollingInterval) {
-		super(ioExecutor, callback, maxFrameLength, maxLatency, maxIdleTime,
-				pollingInterval);
+		super(ioExecutor, callback, maxLatency, maxIdleTime, pollingInterval);
 		this.appContext = appContext;
 	}
 
diff --git a/briar-android/src/org/briarproject/plugins/tcp/AndroidLanTcpPluginFactory.java b/briar-android/src/org/briarproject/plugins/tcp/AndroidLanTcpPluginFactory.java
index 7e0a5469c2410a868c6d084891f097754acbed14..debad159c47e8d84eb96c11182186b67f2526dbd 100644
--- a/briar-android/src/org/briarproject/plugins/tcp/AndroidLanTcpPluginFactory.java
+++ b/briar-android/src/org/briarproject/plugins/tcp/AndroidLanTcpPluginFactory.java
@@ -11,7 +11,6 @@ import android.content.Context;
 
 public class AndroidLanTcpPluginFactory implements DuplexPluginFactory {
 
-	private static final int MAX_FRAME_LENGTH = 1024;
 	private static final int MAX_LATENCY = 30 * 1000; // 30 seconds
 	private static final int MAX_IDLE_TIME = 30 * 1000; // 30 seconds
 	private static final int POLLING_INTERVAL = 3 * 60 * 1000; // 3 minutes
@@ -30,6 +29,6 @@ public class AndroidLanTcpPluginFactory implements DuplexPluginFactory {
 
 	public DuplexPlugin createPlugin(DuplexPluginCallback callback) {
 		return new AndroidLanTcpPlugin(ioExecutor, appContext, callback,
-				MAX_FRAME_LENGTH, MAX_LATENCY, MAX_IDLE_TIME, POLLING_INTERVAL);
+				MAX_LATENCY, MAX_IDLE_TIME, POLLING_INTERVAL);
 	}
 }
diff --git a/briar-android/src/org/briarproject/plugins/tor/TorPlugin.java b/briar-android/src/org/briarproject/plugins/tor/TorPlugin.java
index 4222da1ba99683e8e6200249351ab8ca35afa6ef..0d89832611d713258abc8848756cbe70d2d88285 100644
--- a/briar-android/src/org/briarproject/plugins/tor/TorPlugin.java
+++ b/briar-android/src/org/briarproject/plugins/tor/TorPlugin.java
@@ -75,8 +75,7 @@ class TorPlugin implements DuplexPlugin, EventHandler {
 	private final Context appContext;
 	private final LocationUtils locationUtils;
 	private final DuplexPluginCallback callback;
-	private final int maxFrameLength, maxLatency, maxIdleTime, pollingInterval;
-	private final int socketTimeout;
+	private final int maxLatency, maxIdleTime, pollingInterval, socketTimeout;
 	private final File torDirectory, torFile, geoIpFile, configFile, doneFile;
 	private final File cookieFile, hostnameFile;
 	private final AtomicBoolean circuitBuilt;
@@ -90,13 +89,11 @@ class TorPlugin implements DuplexPlugin, EventHandler {
 
 	TorPlugin(Executor ioExecutor, Context appContext,
 			LocationUtils locationUtils, DuplexPluginCallback callback,
-			int maxFrameLength, int maxLatency, int maxIdleTime,
-			int pollingInterval) {
+			int maxLatency, int maxIdleTime, int pollingInterval) {
 		this.ioExecutor = ioExecutor;
 		this.appContext = appContext;
 		this.locationUtils = locationUtils;
 		this.callback = callback;
-		this.maxFrameLength = maxFrameLength;
 		this.maxLatency = maxLatency;
 		this.maxIdleTime = maxIdleTime;
 		this.pollingInterval = pollingInterval;
@@ -117,10 +114,6 @@ class TorPlugin implements DuplexPlugin, EventHandler {
 		return ID;
 	}
 
-	public int getMaxFrameLength() {
-		return maxFrameLength;
-	}
-
 	public int getMaxLatency() {
 		return maxLatency;
 	}
diff --git a/briar-android/src/org/briarproject/plugins/tor/TorPluginFactory.java b/briar-android/src/org/briarproject/plugins/tor/TorPluginFactory.java
index bf44a35933f96c4bc84b792ffc2f1097b46fdc0f..4861ba6b797188982c9433a4922f8fea107127f5 100644
--- a/briar-android/src/org/briarproject/plugins/tor/TorPluginFactory.java
+++ b/briar-android/src/org/briarproject/plugins/tor/TorPluginFactory.java
@@ -17,7 +17,6 @@ public class TorPluginFactory implements DuplexPluginFactory {
 	private static final Logger LOG =
 			Logger.getLogger(TorPluginFactory.class.getName());
 
-	private static final int MAX_FRAME_LENGTH = 1024;
 	private static final int MAX_LATENCY = 30 * 1000; // 30 seconds
 	private static final int MAX_IDLE_TIME = 30 * 1000; // 30 seconds
 	private static final int POLLING_INTERVAL = 3 * 60 * 1000; // 3 minutes
@@ -44,6 +43,6 @@ public class TorPluginFactory implements DuplexPluginFactory {
 			return null;
 		}
 		return new TorPlugin(ioExecutor,appContext, locationUtils, callback,
-				MAX_FRAME_LENGTH, MAX_LATENCY, MAX_IDLE_TIME, POLLING_INTERVAL);
+				MAX_LATENCY, MAX_IDLE_TIME, POLLING_INTERVAL);
 	}
 }
diff --git a/briar-android/src/org/briarproject/plugins/tor/TorTransportConnection.java b/briar-android/src/org/briarproject/plugins/tor/TorTransportConnection.java
index 12880977f9dc27332ff78fd1a5ea8973e57e0465..4640eb1f6be81d3ae0275ed2274141aec2c385b2 100644
--- a/briar-android/src/org/briarproject/plugins/tor/TorTransportConnection.java
+++ b/briar-android/src/org/briarproject/plugins/tor/TorTransportConnection.java
@@ -38,10 +38,6 @@ class TorTransportConnection implements DuplexTransportConnection {
 
 	private class Reader implements TransportConnectionReader {
 
-		public int getMaxFrameLength() {
-			return plugin.getMaxFrameLength();
-		}
-
 		public long getMaxLatency() {
 			return plugin.getMaxLatency();
 		}
@@ -59,10 +55,6 @@ class TorTransportConnection implements DuplexTransportConnection {
 
 	private class Writer implements TransportConnectionWriter {
 
-		public int getMaxFrameLength() {
-			return plugin.getMaxFrameLength();
-		}
-
 		public int getMaxLatency() {
 			return plugin.getMaxLatency();
 		}
diff --git a/briar-api/src/org/briarproject/api/crypto/AuthenticatedCipher.java b/briar-api/src/org/briarproject/api/crypto/AuthenticatedCipher.java
index 1a6d955229509fc9888ff2e11f94eaf5500b8bc3..444fcf13faa6de5cc5cfbaf38c92c96ed8dbf16a 100644
--- a/briar-api/src/org/briarproject/api/crypto/AuthenticatedCipher.java
+++ b/briar-api/src/org/briarproject/api/crypto/AuthenticatedCipher.java
@@ -2,7 +2,7 @@ package org.briarproject.api.crypto;
 
 import java.security.GeneralSecurityException;
 
-/** An authenticated cipher that support additional authenticated data. */
+/** An authenticated cipher that supports additional authenticated data. */
 public interface AuthenticatedCipher {
 
 	/**
diff --git a/briar-api/src/org/briarproject/api/crypto/StreamDecrypterFactory.java b/briar-api/src/org/briarproject/api/crypto/StreamDecrypterFactory.java
index 46948f2a26625dc9b41fe434bd1e80cdebd8b78f..8b758ec11feef6c53fe7ef5cbb8ad65ca4a6f6aa 100644
--- a/briar-api/src/org/briarproject/api/crypto/StreamDecrypterFactory.java
+++ b/briar-api/src/org/briarproject/api/crypto/StreamDecrypterFactory.java
@@ -7,12 +7,11 @@ import org.briarproject.api.transport.StreamContext;
 public interface StreamDecrypterFactory {
 
 	/** Creates a {@link StreamDecrypter} for decrypting a transport stream. */
-	StreamDecrypter createStreamDecrypter(InputStream in, int maxFrameLength,
-			StreamContext ctx);
+	StreamDecrypter createStreamDecrypter(InputStream in, StreamContext ctx);
 
 	/**
 	 * Creates a {@link StreamDecrypter} for decrypting an invitation stream.
 	 */
 	StreamDecrypter createInvitationStreamDecrypter(InputStream in,
-			int maxFrameLength, byte[] secret, boolean alice);
+			byte[] secret, boolean alice);
 }
diff --git a/briar-api/src/org/briarproject/api/crypto/StreamEncrypterFactory.java b/briar-api/src/org/briarproject/api/crypto/StreamEncrypterFactory.java
index 95912937e4e57a57ad7f39d64ec42bad0a7ba5ca..86df7bbe2439f1f0ea9c6417cd60c8b1911614f3 100644
--- a/briar-api/src/org/briarproject/api/crypto/StreamEncrypterFactory.java
+++ b/briar-api/src/org/briarproject/api/crypto/StreamEncrypterFactory.java
@@ -7,12 +7,11 @@ import org.briarproject.api.transport.StreamContext;
 public interface StreamEncrypterFactory {
 
 	/** Creates a {@link StreamEncrypter} for encrypting a transport stream. */
-	StreamEncrypter createStreamEncrypter(OutputStream out,
-			int maxFrameLength, StreamContext ctx);
+	StreamEncrypter createStreamEncrypter(OutputStream out, StreamContext ctx);
 
 	/**
 	 * Creates a {@link StreamEncrypter} for encrypting an invitation stream.
 	 */
 	StreamEncrypter createInvitationStreamEncrypter(OutputStream out,
-			int maxFrameLength, byte[] secret, boolean alice);
+			byte[] secret, boolean alice);
 }
diff --git a/briar-api/src/org/briarproject/api/plugins/Plugin.java b/briar-api/src/org/briarproject/api/plugins/Plugin.java
index eafb9100707c1db7d20cab3e747986d5a2fe2d28..cc0338a4a3b9d1d9386db6885368e6f34adbef6c 100644
--- a/briar-api/src/org/briarproject/api/plugins/Plugin.java
+++ b/briar-api/src/org/briarproject/api/plugins/Plugin.java
@@ -11,9 +11,6 @@ public interface Plugin {
 	/** Returns the plugin's transport identifier. */
 	TransportId getId();
 
-	/** Returns the transport's maximum frame length in bytes. */
-	int getMaxFrameLength();
-
 	/** Returns the transport's maximum latency in milliseconds. */
 	int getMaxLatency();
 
diff --git a/briar-api/src/org/briarproject/api/plugins/TransportConnectionReader.java b/briar-api/src/org/briarproject/api/plugins/TransportConnectionReader.java
index c4c99dfa37c3e17c94a43a438922fe5a52d173c2..e071c4432b0b8d5eeccd0f014294b25281ed262a 100644
--- a/briar-api/src/org/briarproject/api/plugins/TransportConnectionReader.java
+++ b/briar-api/src/org/briarproject/api/plugins/TransportConnectionReader.java
@@ -9,9 +9,6 @@ import java.io.InputStream;
  */
 public interface TransportConnectionReader {
 
-	/** Returns the maximum frame length of the transport in bytes. */
-	int getMaxFrameLength();
-
 	/** Returns the maximum latency of the transport in milliseconds. */
 	long getMaxLatency();
 
diff --git a/briar-api/src/org/briarproject/api/plugins/TransportConnectionWriter.java b/briar-api/src/org/briarproject/api/plugins/TransportConnectionWriter.java
index 7f07411c635bae555543243ff13d4d0b78dd1c19..d75522f1bb2c48f6541909864008e4bbf876ddb9 100644
--- a/briar-api/src/org/briarproject/api/plugins/TransportConnectionWriter.java
+++ b/briar-api/src/org/briarproject/api/plugins/TransportConnectionWriter.java
@@ -9,9 +9,6 @@ import java.io.OutputStream;
  */
 public interface TransportConnectionWriter {
 
-	/** Returns the maximum frame length of the transport in bytes. */
-	int getMaxFrameLength();
-
 	/** Returns the maximum latency of the transport in milliseconds. */
 	int getMaxLatency();
 
diff --git a/briar-api/src/org/briarproject/api/transport/StreamReaderFactory.java b/briar-api/src/org/briarproject/api/transport/StreamReaderFactory.java
index 3bf4cf049041e2fc8d1cb25298c6377f40c14477..5cf4fd6394ac7f9004d5ad1d48f5d1cca25f7fe2 100644
--- a/briar-api/src/org/briarproject/api/transport/StreamReaderFactory.java
+++ b/briar-api/src/org/briarproject/api/transport/StreamReaderFactory.java
@@ -8,13 +8,12 @@ public interface StreamReaderFactory {
 	 * Creates an {@link java.io.InputStream InputStream} for reading from a
 	 * transport stream.
 	 */
-	InputStream createStreamReader(InputStream in, int maxFrameLength,
-			StreamContext ctx);
+	InputStream createStreamReader(InputStream in, StreamContext ctx);
 
 	/**
 	 * Creates an {@link java.io.InputStream InputStream} for reading from an
 	 * invitation stream.
 	 */
 	InputStream createInvitationStreamReader(InputStream in,
-			int maxFrameLength, byte[] secret, boolean alice);
+			byte[] secret, boolean alice);
 }
diff --git a/briar-api/src/org/briarproject/api/transport/StreamWriterFactory.java b/briar-api/src/org/briarproject/api/transport/StreamWriterFactory.java
index 04a924cc674e6f9ddc1ae7b48289d117608f670a..38e373ccc244a1439d332176ee5380a89343aa9f 100644
--- a/briar-api/src/org/briarproject/api/transport/StreamWriterFactory.java
+++ b/briar-api/src/org/briarproject/api/transport/StreamWriterFactory.java
@@ -8,13 +8,12 @@ public interface StreamWriterFactory {
 	 * Creates an {@link java.io.OutputStream OutputStream} for writing to a
 	 * transport stream
 	 */
-	OutputStream createStreamWriter(OutputStream out, int maxFrameLength,
-			StreamContext ctx);
+	OutputStream createStreamWriter(OutputStream out, StreamContext ctx);
 
 	/**
 	 * Creates an {@link java.io.OutputStream OutputStream} for writing to an
 	 * invitation stream.
 	 */
 	OutputStream createInvitationStreamWriter(OutputStream out,
-			int maxFrameLength, byte[] secret, boolean alice);
+			byte[] secret, boolean alice);
 }
diff --git a/briar-api/src/org/briarproject/api/transport/TransportConstants.java b/briar-api/src/org/briarproject/api/transport/TransportConstants.java
index 666d74e964b00202b89b907c1011caa5e98616d3..7a13dbe9eb6689fcb44178b602db91befac104d6 100644
--- a/briar-api/src/org/briarproject/api/transport/TransportConstants.java
+++ b/briar-api/src/org/briarproject/api/transport/TransportConstants.java
@@ -6,7 +6,7 @@ public interface TransportConstants {
 	int TAG_LENGTH = 16;
 
 	/** The maximum length of a frame in bytes, including the header and MAC. */
-	int MAX_FRAME_LENGTH = 32768; // 2^15, 32 KiB
+	int MAX_FRAME_LENGTH = 1024;
 
 	/** The length of the initalisation vector (IV) in bytes. */
 	int IV_LENGTH = 12;
diff --git a/briar-core/src/org/briarproject/crypto/StreamDecrypterFactoryImpl.java b/briar-core/src/org/briarproject/crypto/StreamDecrypterFactoryImpl.java
index 8f04e686ae86d21b492bfc77b7df94d52eeab1db..5fb504b8480db6393ee6dd7edbfeab1ffc9c25ec 100644
--- a/briar-core/src/org/briarproject/crypto/StreamDecrypterFactoryImpl.java
+++ b/briar-core/src/org/briarproject/crypto/StreamDecrypterFactoryImpl.java
@@ -20,23 +20,21 @@ class StreamDecrypterFactoryImpl implements StreamDecrypterFactory {
 	}
 
 	public StreamDecrypter createStreamDecrypter(InputStream in,
-			int maxFrameLength, StreamContext ctx) {
+			StreamContext ctx) {
 		byte[] secret = ctx.getSecret();
 		long streamNumber = ctx.getStreamNumber();
 		boolean alice = !ctx.getAlice();
 		// Derive the frame key
 		SecretKey frameKey = crypto.deriveFrameKey(secret, streamNumber, alice);
 		// Create the decrypter
-		return new StreamDecrypterImpl(in, crypto.getFrameCipher(), frameKey,
-				maxFrameLength);
+		return new StreamDecrypterImpl(in, crypto.getFrameCipher(), frameKey);
 	}
 
 	public StreamDecrypter createInvitationStreamDecrypter(InputStream in,
-			int maxFrameLength, byte[] secret, boolean alice) {
+			byte[] secret, boolean alice) {
 		// Derive the frame key
 		SecretKey frameKey = crypto.deriveFrameKey(secret, 0, alice);
 		// Create the decrypter
-		return new StreamDecrypterImpl(in, crypto.getFrameCipher(), frameKey,
-				maxFrameLength);
+		return new StreamDecrypterImpl(in, crypto.getFrameCipher(), frameKey);
 	}
 }
diff --git a/briar-core/src/org/briarproject/crypto/StreamDecrypterImpl.java b/briar-core/src/org/briarproject/crypto/StreamDecrypterImpl.java
index 4127e99a7099dc8f42de842b3606434df0df0676..206a12c617fef5f886b7a1c869fd43d252f45df7 100644
--- a/briar-core/src/org/briarproject/crypto/StreamDecrypterImpl.java
+++ b/briar-core/src/org/briarproject/crypto/StreamDecrypterImpl.java
@@ -4,6 +4,7 @@ import static org.briarproject.api.transport.TransportConstants.AAD_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.HEADER_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.IV_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.MAC_LENGTH;
+import static org.briarproject.api.transport.TransportConstants.MAX_FRAME_LENGTH;
 
 import java.io.EOFException;
 import java.io.IOException;
@@ -21,21 +22,19 @@ class StreamDecrypterImpl implements StreamDecrypter {
 	private final AuthenticatedCipher frameCipher;
 	private final SecretKey frameKey;
 	private final byte[] iv, aad, plaintext, ciphertext;
-	private final int frameLength;
 
 	private long frameNumber;
 	private boolean finalFrame;
 
 	StreamDecrypterImpl(InputStream in, AuthenticatedCipher frameCipher,
-			SecretKey frameKey, int frameLength) {
+			SecretKey frameKey) {
 		this.in = in;
 		this.frameCipher = frameCipher;
 		this.frameKey = frameKey;
-		this.frameLength = frameLength;
 		iv = new byte[IV_LENGTH];
 		aad = new byte[AAD_LENGTH];
-		plaintext = new byte[frameLength - MAC_LENGTH];
-		ciphertext = new byte[frameLength];
+		plaintext = new byte[MAX_FRAME_LENGTH - MAC_LENGTH];
+		ciphertext = new byte[MAX_FRAME_LENGTH];
 		frameNumber = 0;
 		finalFrame = false;
 	}
@@ -44,9 +43,9 @@ class StreamDecrypterImpl implements StreamDecrypter {
 		if(finalFrame) return -1;
 		// Read the frame
 		int ciphertextLength = 0;
-		while(ciphertextLength < frameLength) {
+		while(ciphertextLength < MAX_FRAME_LENGTH) {
 			int read = in.read(ciphertext, ciphertextLength,
-					frameLength - ciphertextLength);
+					MAX_FRAME_LENGTH - ciphertextLength);
 			if(read == -1) break; // We'll check the length later
 			ciphertextLength += read;
 		}
@@ -65,7 +64,7 @@ class StreamDecrypterImpl implements StreamDecrypter {
 		}
 		// Decode and validate the header
 		finalFrame = FrameEncoder.isFinalFrame(plaintext);
-		if(!finalFrame && ciphertextLength < frameLength)
+		if(!finalFrame && ciphertextLength < MAX_FRAME_LENGTH)
 			throw new FormatException();
 		int payloadLength = FrameEncoder.getPayloadLength(plaintext);
 		if(payloadLength > plaintextLength - HEADER_LENGTH)
diff --git a/briar-core/src/org/briarproject/crypto/StreamEncrypterFactoryImpl.java b/briar-core/src/org/briarproject/crypto/StreamEncrypterFactoryImpl.java
index 07c9deaabf4affec9cfcc7892664351d766a9403..ec8286e06100b00598b726925e6a4eb0eb096cc7 100644
--- a/briar-core/src/org/briarproject/crypto/StreamEncrypterFactoryImpl.java
+++ b/briar-core/src/org/briarproject/crypto/StreamEncrypterFactoryImpl.java
@@ -22,7 +22,7 @@ class StreamEncrypterFactoryImpl implements StreamEncrypterFactory {
 	}
 
 	public StreamEncrypter createStreamEncrypter(OutputStream out,
-			int maxFrameLength, StreamContext ctx) {
+			StreamContext ctx) {
 		byte[] secret = ctx.getSecret();
 		long streamNumber = ctx.getStreamNumber();
 		boolean alice = ctx.getAlice();
@@ -34,15 +34,15 @@ class StreamEncrypterFactoryImpl implements StreamEncrypterFactory {
 		SecretKey frameKey = crypto.deriveFrameKey(secret, streamNumber, alice);
 		// Create the encrypter
 		return new StreamEncrypterImpl(out, crypto.getFrameCipher(), frameKey,
-				maxFrameLength, tag);
+				tag);
 	}
 
 	public StreamEncrypter createInvitationStreamEncrypter(OutputStream out,
-			int maxFrameLength, byte[] secret, boolean alice) {
+			byte[] secret, boolean alice) {
 		// Derive the frame key
 		SecretKey frameKey = crypto.deriveFrameKey(secret, 0, alice);
 		// Create the encrypter
 		return new StreamEncrypterImpl(out, crypto.getFrameCipher(), frameKey,
-				maxFrameLength, null);
+				null);
 	}
 }
diff --git a/briar-core/src/org/briarproject/crypto/StreamEncrypterImpl.java b/briar-core/src/org/briarproject/crypto/StreamEncrypterImpl.java
index 43a6403912874e163f5a893361f1868713cca205..0a09fc2055a6aacc7d04188c811f92b5b7079194 100644
--- a/briar-core/src/org/briarproject/crypto/StreamEncrypterImpl.java
+++ b/briar-core/src/org/briarproject/crypto/StreamEncrypterImpl.java
@@ -4,6 +4,7 @@ import static org.briarproject.api.transport.TransportConstants.AAD_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.HEADER_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.IV_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.MAC_LENGTH;
+import static org.briarproject.api.transport.TransportConstants.MAX_FRAME_LENGTH;
 import static org.briarproject.util.ByteUtils.MAX_32_BIT_UNSIGNED;
 
 import java.io.IOException;
@@ -20,22 +21,20 @@ class StreamEncrypterImpl implements StreamEncrypter {
 	private final AuthenticatedCipher frameCipher;
 	private final SecretKey frameKey;
 	private final byte[] tag, iv, aad, plaintext, ciphertext;
-	private final int frameLength;
 
 	private long frameNumber;
 	private boolean writeTag;
 
 	StreamEncrypterImpl(OutputStream out, AuthenticatedCipher frameCipher,
-			SecretKey frameKey, int frameLength, byte[] tag) {
+			SecretKey frameKey, byte[] tag) {
 		this.out = out;
 		this.frameCipher = frameCipher;
 		this.frameKey = frameKey;
-		this.frameLength = frameLength;
 		this.tag = tag;
 		iv = new byte[IV_LENGTH];
 		aad = new byte[AAD_LENGTH];
-		plaintext = new byte[frameLength - MAC_LENGTH];
-		ciphertext = new byte[frameLength];
+		plaintext = new byte[MAX_FRAME_LENGTH - MAC_LENGTH];
+		ciphertext = new byte[MAX_FRAME_LENGTH];
 		frameNumber = 0;
 		writeTag = (tag != null);
 	}
@@ -54,8 +53,8 @@ class StreamEncrypterImpl implements StreamEncrypter {
 			plaintextLength = HEADER_LENGTH + payloadLength;
 			ciphertextLength = plaintextLength + MAC_LENGTH;
 		} else {
-			plaintextLength = frameLength - MAC_LENGTH;
-			ciphertextLength = frameLength;
+			plaintextLength = MAX_FRAME_LENGTH - MAC_LENGTH;
+			ciphertextLength = MAX_FRAME_LENGTH;
 		}
 		// Encode the header
 		FrameEncoder.encodeHeader(plaintext, finalFrame, payloadLength);
diff --git a/briar-core/src/org/briarproject/invitation/AliceConnector.java b/briar-core/src/org/briarproject/invitation/AliceConnector.java
index 8c0bd78130b535ac9c0729d99dd84084addbfa97..f641af40a65124ff9df9ae4584910aa95fd1f52e 100644
--- a/briar-core/src/org/briarproject/invitation/AliceConnector.java
+++ b/briar-core/src/org/briarproject/invitation/AliceConnector.java
@@ -128,16 +128,15 @@ class AliceConnector extends Connector {
 		// Confirmation succeeded - upgrade to a secure connection
 		if(LOG.isLoggable(INFO))
 			LOG.info(pluginName + " confirmation succeeded");
-		int maxFrameLength = conn.getReader().getMaxFrameLength();
 		// Create the readers
 		InputStream streamReader =
 				streamReaderFactory.createInvitationStreamReader(in,
-						maxFrameLength, secret, false); // Bob's stream
+						secret, false); // Bob's stream
 		r = readerFactory.createReader(streamReader);
 		// Create the writers
 		OutputStream streamWriter =
 				streamWriterFactory.createInvitationStreamWriter(out,
-						maxFrameLength, secret, true); // Alice's stream
+						secret, true); // Alice's stream
 		w = writerFactory.createWriter(streamWriter);
 		// Derive the invitation nonces
 		byte[][] nonces = crypto.deriveInvitationNonces(secret);
diff --git a/briar-core/src/org/briarproject/invitation/BobConnector.java b/briar-core/src/org/briarproject/invitation/BobConnector.java
index 6b435fd2a6c12e92d3d1bf3d54ec4307f871ab3b..dae8691920e1acf62cfc81c4af54feae020ba704 100644
--- a/briar-core/src/org/briarproject/invitation/BobConnector.java
+++ b/briar-core/src/org/briarproject/invitation/BobConnector.java
@@ -128,16 +128,15 @@ class BobConnector extends Connector {
 		// Confirmation succeeded - upgrade to a secure connection
 		if(LOG.isLoggable(INFO))
 			LOG.info(pluginName + " confirmation succeeded");
-		int maxFrameLength = conn.getReader().getMaxFrameLength();
 		// Create the readers
 		InputStream streamReader =
 				streamReaderFactory.createInvitationStreamReader(in,
-						maxFrameLength, secret, true); // Alice's stream
+						secret, true); // Alice's stream
 		r = readerFactory.createReader(streamReader);
 		// Create the writers
 		OutputStream streamWriter =
 				streamWriterFactory.createInvitationStreamWriter(out,
-						maxFrameLength, secret, false); // Bob's stream
+						secret, false); // Bob's stream
 		w = writerFactory.createWriter(streamWriter);
 		// Derive the nonces
 		byte[][] nonces = crypto.deriveInvitationNonces(secret);
diff --git a/briar-core/src/org/briarproject/plugins/ConnectionManagerImpl.java b/briar-core/src/org/briarproject/plugins/ConnectionManagerImpl.java
index 2b1a5c633ee8fbb63f13d1f2fcd57b514f7ad925..b7cb70c1bd8fc9b90560145603d1d49722c8992c 100644
--- a/briar-core/src/org/briarproject/plugins/ConnectionManagerImpl.java
+++ b/briar-core/src/org/briarproject/plugins/ConnectionManagerImpl.java
@@ -95,7 +95,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 	private MessagingSession createIncomingSession(StreamContext ctx,
 			TransportConnectionReader r) throws IOException {
 		InputStream streamReader = streamReaderFactory.createStreamReader(
-				r.getInputStream(), r.getMaxFrameLength(), ctx);
+				r.getInputStream(), ctx);
 		return messagingSessionFactory.createIncomingSession(
 				ctx.getContactId(), ctx.getTransportId(), streamReader);
 	}
@@ -103,7 +103,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 	private MessagingSession createSimplexOutgoingSession(StreamContext ctx,
 			TransportConnectionWriter w) throws IOException {
 		OutputStream streamWriter = streamWriterFactory.createStreamWriter(
-				w.getOutputStream(), w.getMaxFrameLength(), ctx);
+				w.getOutputStream(), ctx);
 		return messagingSessionFactory.createSimplexOutgoingSession(
 				ctx.getContactId(), ctx.getTransportId(), w.getMaxLatency(),
 				streamWriter);
@@ -112,7 +112,7 @@ class ConnectionManagerImpl implements ConnectionManager {
 	private MessagingSession createDuplexOutgoingSession(StreamContext ctx,
 			TransportConnectionWriter w) throws IOException {
 		OutputStream streamWriter = streamWriterFactory.createStreamWriter(
-				w.getOutputStream(), w.getMaxFrameLength(), ctx);
+				w.getOutputStream(), ctx);
 		return messagingSessionFactory.createDuplexOutgoingSession(
 				ctx.getContactId(), ctx.getTransportId(), w.getMaxLatency(),
 				w.getMaxIdleTime(), streamWriter);
diff --git a/briar-core/src/org/briarproject/plugins/file/FilePlugin.java b/briar-core/src/org/briarproject/plugins/file/FilePlugin.java
index a187760aafdfcce5dc7700c66c93ccd266af33ee..abaa6349256d34c3d8e663922f78e2d28e5b74dd 100644
--- a/briar-core/src/org/briarproject/plugins/file/FilePlugin.java
+++ b/briar-core/src/org/briarproject/plugins/file/FilePlugin.java
@@ -28,7 +28,7 @@ public abstract class FilePlugin implements SimplexPlugin {
 	protected final Executor ioExecutor;
 	protected final FileUtils fileUtils;
 	protected final SimplexPluginCallback callback;
-	protected final int maxFrameLength, maxLatency;
+	protected final int maxLatency;
 
 	protected volatile boolean running = false;
 
@@ -38,19 +38,13 @@ public abstract class FilePlugin implements SimplexPlugin {
 	protected abstract void readerFinished(File f);
 
 	protected FilePlugin(Executor ioExecutor, FileUtils fileUtils,
-			SimplexPluginCallback callback, int maxFrameLength,
-			int maxLatency) {
+			SimplexPluginCallback callback, int maxLatency) {
 		this.ioExecutor = ioExecutor;
 		this.fileUtils = fileUtils;
 		this.callback = callback;
-		this.maxFrameLength = maxFrameLength;
 		this.maxLatency = maxLatency;
 	}
 
-	public int getMaxFrameLength() {
-		return maxFrameLength;
-	}
-
 	public int getMaxLatency() {
 		return maxLatency;
 	}
diff --git a/briar-core/src/org/briarproject/plugins/file/FileTransportReader.java b/briar-core/src/org/briarproject/plugins/file/FileTransportReader.java
index 316773ec01270fc0b45282edd62a6b40785985e5..4c434faa621a94788ad9b0f3649fb61518081de3 100644
--- a/briar-core/src/org/briarproject/plugins/file/FileTransportReader.java
+++ b/briar-core/src/org/briarproject/plugins/file/FileTransportReader.java
@@ -24,10 +24,6 @@ class FileTransportReader implements TransportConnectionReader {
 		this.plugin = plugin;
 	}
 
-	public int getMaxFrameLength() {
-		return plugin.getMaxFrameLength();
-	}
-
 	public long getMaxLatency() {
 		return plugin.getMaxLatency();
 	}
diff --git a/briar-core/src/org/briarproject/plugins/file/FileTransportWriter.java b/briar-core/src/org/briarproject/plugins/file/FileTransportWriter.java
index c2ffcde0892b49a924165531a767f69901a11316..f9b14651e1e4a3ed8b4a3913faf3511f7795bd3d 100644
--- a/briar-core/src/org/briarproject/plugins/file/FileTransportWriter.java
+++ b/briar-core/src/org/briarproject/plugins/file/FileTransportWriter.java
@@ -27,10 +27,6 @@ class FileTransportWriter implements TransportConnectionWriter {
 		this.plugin = plugin;
 	}
 
-	public int getMaxFrameLength() {
-		return plugin.getMaxFrameLength();
-	}
-
 	public int getMaxLatency() {
 		return plugin.getMaxLatency();
 	}
diff --git a/briar-core/src/org/briarproject/plugins/tcp/LanTcpPlugin.java b/briar-core/src/org/briarproject/plugins/tcp/LanTcpPlugin.java
index 6f15c6fe81d5f0e1b51e8981e177c4e6967a036b..ea030c40ee629ed527a9393dc51fd04bb5a9a713 100644
--- a/briar-core/src/org/briarproject/plugins/tcp/LanTcpPlugin.java
+++ b/briar-core/src/org/briarproject/plugins/tcp/LanTcpPlugin.java
@@ -17,10 +17,8 @@ class LanTcpPlugin extends TcpPlugin {
 	static final TransportId ID = new TransportId("lan");
 
 	LanTcpPlugin(Executor ioExecutor, DuplexPluginCallback callback,
-			int maxFrameLength, int maxLatency, int maxIdleTime,
-			int pollingInterval) {
-		super(ioExecutor, callback, maxFrameLength, maxLatency, maxIdleTime,
-				pollingInterval);
+			int maxLatency, int maxIdleTime, int pollingInterval) {
+		super(ioExecutor, callback, maxLatency, maxIdleTime, pollingInterval);
 	}
 
 	public TransportId getId() {
diff --git a/briar-core/src/org/briarproject/plugins/tcp/LanTcpPluginFactory.java b/briar-core/src/org/briarproject/plugins/tcp/LanTcpPluginFactory.java
index 8527df94137b60548894abc24be5541d62c6846e..68f2edc0e77aab769e242a3e63f4334376ac5083 100644
--- a/briar-core/src/org/briarproject/plugins/tcp/LanTcpPluginFactory.java
+++ b/briar-core/src/org/briarproject/plugins/tcp/LanTcpPluginFactory.java
@@ -9,7 +9,6 @@ import org.briarproject.api.plugins.duplex.DuplexPluginFactory;
 
 public class LanTcpPluginFactory implements DuplexPluginFactory {
 
-	private static final int MAX_FRAME_LENGTH = 1024;
 	private static final int MAX_LATENCY = 30 * 1000; // 30 seconds
 	private static final int MAX_IDLE_TIME = 30 * 1000; // 30 seconds
 	private static final int POLLING_INTERVAL = 3 * 60 * 1000; // 3 minutes
@@ -25,7 +24,7 @@ public class LanTcpPluginFactory implements DuplexPluginFactory {
 	}
 
 	public DuplexPlugin createPlugin(DuplexPluginCallback callback) {
-		return new LanTcpPlugin(ioExecutor, callback, MAX_FRAME_LENGTH,
-				MAX_LATENCY, MAX_IDLE_TIME, POLLING_INTERVAL);
+		return new LanTcpPlugin(ioExecutor, callback,  MAX_LATENCY,
+				MAX_IDLE_TIME, POLLING_INTERVAL);
 	}
 }
diff --git a/briar-core/src/org/briarproject/plugins/tcp/TcpPlugin.java b/briar-core/src/org/briarproject/plugins/tcp/TcpPlugin.java
index 0a4946b4824b777b449a6ca2c4805f6c68946caa..083f46598d04095aa9e3a094901462f3c421afef 100644
--- a/briar-core/src/org/briarproject/plugins/tcp/TcpPlugin.java
+++ b/briar-core/src/org/briarproject/plugins/tcp/TcpPlugin.java
@@ -37,8 +37,7 @@ abstract class TcpPlugin implements DuplexPlugin {
 
 	protected final Executor ioExecutor;
 	protected final DuplexPluginCallback callback;
-	protected final int maxFrameLength, maxLatency, maxIdleTime;
-	protected final int pollingInterval, socketTimeout;
+	protected final int maxLatency, maxIdleTime, pollingInterval, socketTimeout;
 
 	protected volatile boolean running = false;
 	protected volatile ServerSocket socket = null;
@@ -53,11 +52,9 @@ abstract class TcpPlugin implements DuplexPlugin {
 	protected abstract boolean isConnectable(InetSocketAddress remote);
 
 	protected TcpPlugin(Executor ioExecutor, DuplexPluginCallback callback,
-			int maxFrameLength, int maxLatency, int maxIdleTime,
-			int pollingInterval) {
+			int maxLatency, int maxIdleTime, int pollingInterval) {
 		this.ioExecutor = ioExecutor;
 		this.callback = callback;
-		this.maxFrameLength = maxFrameLength;
 		this.maxLatency = maxLatency;
 		this.maxIdleTime = maxIdleTime;
 		this.pollingInterval = pollingInterval;
@@ -66,10 +63,6 @@ abstract class TcpPlugin implements DuplexPlugin {
 		else socketTimeout = maxIdleTime * 2;
 	}
 
-	public int getMaxFrameLength() {
-		return maxFrameLength;
-	}
-
 	public int getMaxLatency() {
 		return maxLatency;
 	}
diff --git a/briar-core/src/org/briarproject/plugins/tcp/TcpTransportConnection.java b/briar-core/src/org/briarproject/plugins/tcp/TcpTransportConnection.java
index fff4ee01b1d8f78758c78b4410a2a931a5896f16..aae3c53ba86ba2232d0f8313f0ce27983d058ea4 100644
--- a/briar-core/src/org/briarproject/plugins/tcp/TcpTransportConnection.java
+++ b/briar-core/src/org/briarproject/plugins/tcp/TcpTransportConnection.java
@@ -38,10 +38,6 @@ class TcpTransportConnection implements DuplexTransportConnection {
 
 	private class Reader implements TransportConnectionReader {
 
-		public int getMaxFrameLength() {
-			return plugin.getMaxFrameLength();
-		}
-
 		public long getMaxLatency() {
 			return plugin.getMaxLatency();
 		}
@@ -59,10 +55,6 @@ class TcpTransportConnection implements DuplexTransportConnection {
 
 	private class Writer implements TransportConnectionWriter {
 
-		public int getMaxFrameLength() {
-			return plugin.getMaxFrameLength();
-		}
-
 		public int getMaxLatency() {
 			return plugin.getMaxLatency();
 		}
diff --git a/briar-core/src/org/briarproject/plugins/tcp/WanTcpPlugin.java b/briar-core/src/org/briarproject/plugins/tcp/WanTcpPlugin.java
index 67be0c72166d1293420b9e597957451a63b980e7..15a4dfde82ebfc8e4094decafecb92ad257915b5 100644
--- a/briar-core/src/org/briarproject/plugins/tcp/WanTcpPlugin.java
+++ b/briar-core/src/org/briarproject/plugins/tcp/WanTcpPlugin.java
@@ -21,10 +21,9 @@ class WanTcpPlugin extends TcpPlugin {
 	private volatile MappingResult mappingResult;
 
 	WanTcpPlugin(Executor ioExecutor, PortMapper portMapper,
-			DuplexPluginCallback callback, int maxFrameLength, int maxLatency,
-			int maxIdleTime, int pollingInterval) {
-		super(ioExecutor, callback, maxFrameLength, maxLatency, maxIdleTime,
-				pollingInterval);
+			DuplexPluginCallback callback, int maxLatency, int maxIdleTime,
+			int pollingInterval) {
+		super(ioExecutor, callback, maxLatency, maxIdleTime, pollingInterval);
 		this.portMapper = portMapper;
 	}
 
diff --git a/briar-core/src/org/briarproject/plugins/tcp/WanTcpPluginFactory.java b/briar-core/src/org/briarproject/plugins/tcp/WanTcpPluginFactory.java
index 8129661ffc65c5c2c8c431653339eea0f13559d1..bd326ebbc0e8281f47511ceae223cc536caaa25d 100644
--- a/briar-core/src/org/briarproject/plugins/tcp/WanTcpPluginFactory.java
+++ b/briar-core/src/org/briarproject/plugins/tcp/WanTcpPluginFactory.java
@@ -10,7 +10,6 @@ import org.briarproject.api.plugins.duplex.DuplexPluginFactory;
 
 public class WanTcpPluginFactory implements DuplexPluginFactory {
 
-	private static final int MAX_FRAME_LENGTH = 1024;
 	private static final int MAX_LATENCY = 30 * 1000; // 30 seconds
 	private static final int MAX_IDLE_TIME = 30 * 1000; // 30 seconds
 	private static final int POLLING_INTERVAL = 5 * 60 * 1000; // 5 minutes
@@ -30,7 +29,6 @@ public class WanTcpPluginFactory implements DuplexPluginFactory {
 
 	public DuplexPlugin createPlugin(DuplexPluginCallback callback) {
 		return new WanTcpPlugin(ioExecutor, new PortMapperImpl(shutdownManager),
-				callback, MAX_FRAME_LENGTH, MAX_LATENCY, MAX_IDLE_TIME,
-				POLLING_INTERVAL);
+				callback, MAX_LATENCY, MAX_IDLE_TIME, POLLING_INTERVAL);
 	}
 }
diff --git a/briar-core/src/org/briarproject/transport/StreamReaderFactoryImpl.java b/briar-core/src/org/briarproject/transport/StreamReaderFactoryImpl.java
index daa4f2bb769f93d9da0664cb7b67e8b718ebc5e0..d066cacd4f6dcefe45ea1a5ad230f6c3fa03b87e 100644
--- a/briar-core/src/org/briarproject/transport/StreamReaderFactoryImpl.java
+++ b/briar-core/src/org/briarproject/transport/StreamReaderFactoryImpl.java
@@ -4,7 +4,6 @@ import java.io.InputStream;
 
 import javax.inject.Inject;
 
-import org.briarproject.api.crypto.StreamDecrypter;
 import org.briarproject.api.crypto.StreamDecrypterFactory;
 import org.briarproject.api.transport.StreamContext;
 import org.briarproject.api.transport.StreamReaderFactory;
@@ -18,18 +17,15 @@ class StreamReaderFactoryImpl implements StreamReaderFactory {
 		this.streamDecrypterFactory = streamDecrypterFactory;
 	}
 
-	public InputStream createStreamReader(InputStream in, int maxFrameLength,
-			StreamContext ctx) {
-		StreamDecrypter s = streamDecrypterFactory.createStreamDecrypter(in,
-				maxFrameLength, ctx);
-		return new StreamReaderImpl(s, maxFrameLength);
+	public InputStream createStreamReader(InputStream in, StreamContext ctx) {
+		return new StreamReaderImpl(
+				streamDecrypterFactory.createStreamDecrypter(in, ctx));
 	}
 
 	public InputStream createInvitationStreamReader(InputStream in,
-			int maxFrameLength, byte[] secret, boolean alice) {
-		StreamDecrypter s =
+			byte[] secret, boolean alice) {
+		return new StreamReaderImpl(
 				streamDecrypterFactory.createInvitationStreamDecrypter(in,
-						maxFrameLength, secret, alice);
-		return new StreamReaderImpl(s, maxFrameLength);
+						secret, alice));
 	}
 }
diff --git a/briar-core/src/org/briarproject/transport/StreamReaderImpl.java b/briar-core/src/org/briarproject/transport/StreamReaderImpl.java
index e9a30b24a96d5bd871087c49f4bcf5aef78b9ffc..f0a1a26c129c0af1e8dc45e0cd57fef3079bc40e 100644
--- a/briar-core/src/org/briarproject/transport/StreamReaderImpl.java
+++ b/briar-core/src/org/briarproject/transport/StreamReaderImpl.java
@@ -2,6 +2,7 @@ package org.briarproject.transport;
 
 import static org.briarproject.api.transport.TransportConstants.HEADER_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.MAC_LENGTH;
+import static org.briarproject.api.transport.TransportConstants.MAX_FRAME_LENGTH;
 
 import java.io.IOException;
 import java.io.InputStream;
@@ -15,9 +16,9 @@ class StreamReaderImpl extends InputStream {
 
 	private int offset = 0, length = 0;
 
-	StreamReaderImpl(StreamDecrypter decrypter, int frameLength) {
+	StreamReaderImpl(StreamDecrypter decrypter) {
 		this.decrypter = decrypter;
-		payload = new byte[frameLength - HEADER_LENGTH - MAC_LENGTH];
+		payload = new byte[MAX_FRAME_LENGTH - HEADER_LENGTH - MAC_LENGTH];
 	}
 
 	@Override
diff --git a/briar-core/src/org/briarproject/transport/StreamWriterFactoryImpl.java b/briar-core/src/org/briarproject/transport/StreamWriterFactoryImpl.java
index f57a8f69bf96c413bbae7f88bbbf9ae5523b905f..89da3a46445d4dbed63895332179229562c38417 100644
--- a/briar-core/src/org/briarproject/transport/StreamWriterFactoryImpl.java
+++ b/briar-core/src/org/briarproject/transport/StreamWriterFactoryImpl.java
@@ -4,7 +4,6 @@ import java.io.OutputStream;
 
 import javax.inject.Inject;
 
-import org.briarproject.api.crypto.StreamEncrypter;
 import org.briarproject.api.crypto.StreamEncrypterFactory;
 import org.briarproject.api.transport.StreamContext;
 import org.briarproject.api.transport.StreamWriterFactory;
@@ -18,18 +17,16 @@ class StreamWriterFactoryImpl implements StreamWriterFactory {
 		this.streamEncrypterFactory = streamEncrypterFactory;
 	}
 
-	public OutputStream createStreamWriter(OutputStream out, int maxFrameLength,
+	public OutputStream createStreamWriter(OutputStream out,
 			StreamContext ctx) {
-		StreamEncrypter s = streamEncrypterFactory.createStreamEncrypter(out,
-				maxFrameLength, ctx);
-		return new StreamWriterImpl(s, maxFrameLength);
+		return new StreamWriterImpl(
+				streamEncrypterFactory.createStreamEncrypter(out, ctx));
 	}
 
 	public OutputStream createInvitationStreamWriter(OutputStream out,
-			int maxFrameLength, byte[] secret, boolean alice) {
-		StreamEncrypter s =
+			byte[] secret, boolean alice) {
+		return new StreamWriterImpl(
 				streamEncrypterFactory.createInvitationStreamEncrypter(out,
-						maxFrameLength, secret, alice);
-		return new StreamWriterImpl(s, maxFrameLength);
+						secret, alice));
 	}
 }
\ No newline at end of file
diff --git a/briar-core/src/org/briarproject/transport/StreamWriterImpl.java b/briar-core/src/org/briarproject/transport/StreamWriterImpl.java
index 05653fd42a4754b005d6b49e9e3b8617876a64ec..22384dd22bc644c139103a7f5e75417df287d59c 100644
--- a/briar-core/src/org/briarproject/transport/StreamWriterImpl.java
+++ b/briar-core/src/org/briarproject/transport/StreamWriterImpl.java
@@ -2,6 +2,7 @@ package org.briarproject.transport;
 
 import static org.briarproject.api.transport.TransportConstants.HEADER_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.MAC_LENGTH;
+import static org.briarproject.api.transport.TransportConstants.MAX_FRAME_LENGTH;
 
 import java.io.IOException;
 import java.io.OutputStream;
@@ -22,9 +23,9 @@ class StreamWriterImpl extends OutputStream {
 
 	private int length = 0;
 
-	StreamWriterImpl(StreamEncrypter encrypter, int maxFrameLength) {
+	StreamWriterImpl(StreamEncrypter encrypter) {
 		this.encrypter = encrypter;
-		payload = new byte[maxFrameLength - HEADER_LENGTH - MAC_LENGTH];
+		payload = new byte[MAX_FRAME_LENGTH - HEADER_LENGTH - MAC_LENGTH];
 	}
 
 	@Override
diff --git a/briar-desktop/src/org/briarproject/plugins/bluetooth/BluetoothPlugin.java b/briar-desktop/src/org/briarproject/plugins/bluetooth/BluetoothPlugin.java
index be87193edb12fc4cd4a94116cc1e76ee22b84732..45dca315f2a2b6ad64e7f21cc20e1a6b721c0b16 100644
--- a/briar-desktop/src/org/briarproject/plugins/bluetooth/BluetoothPlugin.java
+++ b/briar-desktop/src/org/briarproject/plugins/bluetooth/BluetoothPlugin.java
@@ -46,7 +46,7 @@ class BluetoothPlugin implements DuplexPlugin {
 	private final Clock clock;
 	private final SecureRandom secureRandom;
 	private final DuplexPluginCallback callback;
-	private final int maxFrameLength, maxLatency, pollingInterval;
+	private final int maxLatency, pollingInterval;
 	private final Semaphore discoverySemaphore = new Semaphore(1);
 
 	private volatile boolean running = false;
@@ -54,13 +54,12 @@ class BluetoothPlugin implements DuplexPlugin {
 	private volatile LocalDevice localDevice = null;
 
 	BluetoothPlugin(Executor ioExecutor, Clock clock, SecureRandom secureRandom,
-			DuplexPluginCallback callback, int maxFrameLength, int maxLatency,
+			DuplexPluginCallback callback, int maxLatency,
 			int pollingInterval) {
 		this.ioExecutor = ioExecutor;
 		this.clock = clock;
 		this.secureRandom = secureRandom;
 		this.callback = callback;
-		this.maxFrameLength = maxFrameLength;
 		this.maxLatency = maxLatency;
 		this.pollingInterval = pollingInterval;
 	}
@@ -69,10 +68,6 @@ class BluetoothPlugin implements DuplexPlugin {
 		return ID;
 	}
 
-	public int getMaxFrameLength() {
-		return maxFrameLength;
-	}
-
 	public int getMaxLatency() {
 		return maxLatency;
 	}
diff --git a/briar-desktop/src/org/briarproject/plugins/bluetooth/BluetoothPluginFactory.java b/briar-desktop/src/org/briarproject/plugins/bluetooth/BluetoothPluginFactory.java
index a25a73c3706b941595ac14818a2e10ccfe54a6fa..28859c4d7eae9e79ff42baf2081b70f71dafc809 100644
--- a/briar-desktop/src/org/briarproject/plugins/bluetooth/BluetoothPluginFactory.java
+++ b/briar-desktop/src/org/briarproject/plugins/bluetooth/BluetoothPluginFactory.java
@@ -12,7 +12,6 @@ import org.briarproject.system.SystemClock;
 
 public class BluetoothPluginFactory implements DuplexPluginFactory {
 
-	private static final int MAX_FRAME_LENGTH = 1024;
 	private static final int MAX_LATENCY = 30 * 1000; // 30 seconds
 	private static final int POLLING_INTERVAL = 3 * 60 * 1000; // 3 minutes
 
@@ -33,6 +32,6 @@ public class BluetoothPluginFactory implements DuplexPluginFactory {
 
 	public DuplexPlugin createPlugin(DuplexPluginCallback callback) {
 		return new BluetoothPlugin(ioExecutor, clock, secureRandom, callback,
-				MAX_FRAME_LENGTH, MAX_LATENCY, POLLING_INTERVAL);
+				MAX_LATENCY, POLLING_INTERVAL);
 	}
 }
diff --git a/briar-desktop/src/org/briarproject/plugins/bluetooth/BluetoothTransportConnection.java b/briar-desktop/src/org/briarproject/plugins/bluetooth/BluetoothTransportConnection.java
index 0767c42d9a045373e8f8138dd53eb0e81a8e7c50..8e70db480b0cfa70cdb256c110ffb5c275740a02 100644
--- a/briar-desktop/src/org/briarproject/plugins/bluetooth/BluetoothTransportConnection.java
+++ b/briar-desktop/src/org/briarproject/plugins/bluetooth/BluetoothTransportConnection.java
@@ -39,10 +39,6 @@ class BluetoothTransportConnection implements DuplexTransportConnection {
 
 	private class Reader implements TransportConnectionReader {
 
-		public int getMaxFrameLength() {
-			return plugin.getMaxFrameLength();
-		}
-
 		public long getMaxLatency() {
 			return plugin.getMaxLatency();
 		}
@@ -60,10 +56,6 @@ class BluetoothTransportConnection implements DuplexTransportConnection {
 
 	private class Writer implements TransportConnectionWriter {
 
-		public int getMaxFrameLength() {
-			return plugin.getMaxFrameLength();
-		}
-
 		public int getMaxLatency() {
 			return plugin.getMaxLatency();
 		}
diff --git a/briar-desktop/src/org/briarproject/plugins/file/RemovableDrivePlugin.java b/briar-desktop/src/org/briarproject/plugins/file/RemovableDrivePlugin.java
index faaf4b01c4424a25470c5cc65a27b621d7519d6e..f648ff092c402c0df55d767838a64d92b22ef996 100644
--- a/briar-desktop/src/org/briarproject/plugins/file/RemovableDrivePlugin.java
+++ b/briar-desktop/src/org/briarproject/plugins/file/RemovableDrivePlugin.java
@@ -29,8 +29,8 @@ implements RemovableDriveMonitor.Callback {
 
 	RemovableDrivePlugin(Executor ioExecutor, FileUtils fileUtils,
 			SimplexPluginCallback callback, RemovableDriveFinder finder,
-			RemovableDriveMonitor monitor, int maxFrameLength, int maxLatency) {
-		super(ioExecutor, fileUtils, callback, maxFrameLength, maxLatency);
+			RemovableDriveMonitor monitor, int maxLatency) {
+		super(ioExecutor, fileUtils, callback, maxLatency);
 		this.finder = finder;
 		this.monitor = monitor;
 	}
diff --git a/briar-desktop/src/org/briarproject/plugins/file/RemovableDrivePluginFactory.java b/briar-desktop/src/org/briarproject/plugins/file/RemovableDrivePluginFactory.java
index 4b7d6835fc95a019251d1aed1bb1a33b5416b1d6..68b1eaf31c8bb2a4e856f8f21b19b0705db99e66 100644
--- a/briar-desktop/src/org/briarproject/plugins/file/RemovableDrivePluginFactory.java
+++ b/briar-desktop/src/org/briarproject/plugins/file/RemovableDrivePluginFactory.java
@@ -1,7 +1,5 @@
 package org.briarproject.plugins.file;
 
-import static org.briarproject.api.transport.TransportConstants.MAX_FRAME_LENGTH;
-
 import java.util.concurrent.Executor;
 
 import org.briarproject.api.TransportId;
@@ -52,6 +50,6 @@ public class RemovableDrivePluginFactory implements SimplexPluginFactory {
 			return null;
 		}
 		return new RemovableDrivePlugin(ioExecutor, fileUtils, callback,
-				finder, monitor, MAX_FRAME_LENGTH, MAX_LATENCY);
+				finder, monitor, MAX_LATENCY);
 	}
 }
diff --git a/briar-desktop/src/org/briarproject/plugins/modem/ModemPlugin.java b/briar-desktop/src/org/briarproject/plugins/modem/ModemPlugin.java
index 092eeec8baa45406ecb42548dd50b1e00e1b206e..b0a58969cb6ccb1a533994b7640c5e00f8a81ad8 100644
--- a/briar-desktop/src/org/briarproject/plugins/modem/ModemPlugin.java
+++ b/briar-desktop/src/org/briarproject/plugins/modem/ModemPlugin.java
@@ -32,17 +32,16 @@ class ModemPlugin implements DuplexPlugin, Modem.Callback {
 	private final ModemFactory modemFactory;
 	private final SerialPortList serialPortList;
 	private final DuplexPluginCallback callback;
-	private final int maxFrameLength, maxLatency;
+	private final int maxLatency;
 
 	private volatile boolean running = false;
 	private volatile Modem modem = null;
 
 	ModemPlugin(ModemFactory modemFactory, SerialPortList serialPortList,
-			DuplexPluginCallback callback, int maxFrameLength, int maxLatency) {
+			DuplexPluginCallback callback, int maxLatency) {
 		this.modemFactory = modemFactory;
 		this.serialPortList = serialPortList;
 		this.callback = callback;
-		this.maxFrameLength = maxFrameLength;
 		this.maxLatency = maxLatency;
 	}
 
@@ -50,10 +49,6 @@ class ModemPlugin implements DuplexPlugin, Modem.Callback {
 		return ID;
 	}
 
-	public int getMaxFrameLength() {
-		return maxFrameLength;
-	}
-
 	public int getMaxLatency() {
 		return maxLatency;
 	}
@@ -199,10 +194,6 @@ class ModemPlugin implements DuplexPlugin, Modem.Callback {
 
 		private class Reader implements TransportConnectionReader {
 
-			public int getMaxFrameLength() {
-				return maxFrameLength;
-			}
-
 			public long getMaxLatency() {
 				return maxLatency;
 			}
@@ -219,10 +210,6 @@ class ModemPlugin implements DuplexPlugin, Modem.Callback {
 
 		private class Writer implements TransportConnectionWriter {
 
-			public int getMaxFrameLength() {
-				return getMaxFrameLength();
-			}
-
 			public int getMaxLatency() {
 				return getMaxLatency();
 			}
diff --git a/briar-desktop/src/org/briarproject/plugins/modem/ModemPluginFactory.java b/briar-desktop/src/org/briarproject/plugins/modem/ModemPluginFactory.java
index 670be76fcacc8c92cb46309ccea5179ba81f9801..f70fc3be712fc4a5ca32cd415b0aadadd8177a05 100644
--- a/briar-desktop/src/org/briarproject/plugins/modem/ModemPluginFactory.java
+++ b/briar-desktop/src/org/briarproject/plugins/modem/ModemPluginFactory.java
@@ -11,7 +11,6 @@ import org.briarproject.util.StringUtils;
 
 public class ModemPluginFactory implements DuplexPluginFactory {
 
-	private static final int MAX_FRAME_LENGTH = 1024;
 	private static final int MAX_LATENCY = 30 * 1000; // 30 seconds
 
 	private final ModemFactory modemFactory;
@@ -32,6 +31,6 @@ public class ModemPluginFactory implements DuplexPluginFactory {
 		String enabled = callback.getConfig().get("enabled");
 		if(StringUtils.isNullOrEmpty(enabled)) return null;
 		return new ModemPlugin(modemFactory, serialPortList, callback,
-				MAX_FRAME_LENGTH, MAX_LATENCY);
+				MAX_LATENCY);
 	}
 }
diff --git a/briar-tests/src/org/briarproject/ProtocolIntegrationTest.java b/briar-tests/src/org/briarproject/ProtocolIntegrationTest.java
index cfd5af2d57e179779eeea1b2fa133a09e5f98e71..633a4929ad23c580685f96f2a63cbc05d20682ca 100644
--- a/briar-tests/src/org/briarproject/ProtocolIntegrationTest.java
+++ b/briar-tests/src/org/briarproject/ProtocolIntegrationTest.java
@@ -1,6 +1,5 @@
 package org.briarproject;
 
-import static org.briarproject.api.transport.TransportConstants.MAX_FRAME_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.TAG_LENGTH;
 import static org.junit.Assert.assertArrayEquals;
 
@@ -118,8 +117,8 @@ public class ProtocolIntegrationTest extends BriarTestCase {
 		ByteArrayOutputStream out = new ByteArrayOutputStream();
 		StreamContext ctx = new StreamContext(contactId, transportId, secret,
 				0, true);
-		OutputStream streamWriter = streamWriterFactory.createStreamWriter(out,
-				MAX_FRAME_LENGTH, ctx);
+		OutputStream streamWriter =
+				streamWriterFactory.createStreamWriter(out, ctx);
 		PacketWriter packetWriter = packetWriterFactory.createPacketWriter(
 				streamWriter);
 
@@ -150,8 +149,8 @@ public class ProtocolIntegrationTest extends BriarTestCase {
 		// FIXME: Check that the expected tag was received
 		StreamContext ctx = new StreamContext(contactId, transportId, secret,
 				0, false);
-		InputStream streamReader = streamReaderFactory.createStreamReader(in,
-				MAX_FRAME_LENGTH, ctx);
+		InputStream streamReader =
+				streamReaderFactory.createStreamReader(in, ctx);
 		PacketReader packetReader = packetReaderFactory.createPacketReader(
 				streamReader);
 
diff --git a/briar-tests/src/org/briarproject/crypto/StreamDecrypterImplTest.java b/briar-tests/src/org/briarproject/crypto/StreamDecrypterImplTest.java
index 1ee05436a6af717656b71924aa968d8697ea4307..b0b5f239a538564a0cd4e1e36292e4ecf39627fb 100644
--- a/briar-tests/src/org/briarproject/crypto/StreamDecrypterImplTest.java
+++ b/briar-tests/src/org/briarproject/crypto/StreamDecrypterImplTest.java
@@ -4,6 +4,7 @@ import static org.briarproject.api.transport.TransportConstants.AAD_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.HEADER_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.IV_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.MAC_LENGTH;
+import static org.briarproject.api.transport.TransportConstants.MAX_FRAME_LENGTH;
 
 import java.io.ByteArrayInputStream;
 
@@ -14,6 +15,7 @@ import org.briarproject.api.FormatException;
 import org.briarproject.api.crypto.AuthenticatedCipher;
 import org.briarproject.api.crypto.CryptoComponent;
 import org.briarproject.api.crypto.SecretKey;
+import org.briarproject.util.ByteUtils;
 import org.junit.Test;
 
 import com.google.inject.Guice;
@@ -23,9 +25,8 @@ public class StreamDecrypterImplTest extends BriarTestCase {
 
 	// FIXME: This is an integration test, not a unit test
 
-	private static final int FRAME_LENGTH = 1024;
 	private static final int MAX_PAYLOAD_LENGTH =
-			FRAME_LENGTH - HEADER_LENGTH - MAC_LENGTH;
+			MAX_FRAME_LENGTH - HEADER_LENGTH - MAC_LENGTH;
 
 	private final CryptoComponent crypto;
 	private final AuthenticatedCipher frameCipher;
@@ -42,16 +43,16 @@ public class StreamDecrypterImplTest extends BriarTestCase {
 	@Test
 	public void testReadValidFrames() throws Exception {
 		// Generate two valid frames
-		byte[] frame = generateFrame(0, FRAME_LENGTH, 123, false, false);
-		byte[] frame1 = generateFrame(1, FRAME_LENGTH, 123, false, false);
+		byte[] frame = generateFrame(0, MAX_FRAME_LENGTH, 123, false, false);
+		byte[] frame1 = generateFrame(1, MAX_FRAME_LENGTH, 123, false, false);
 		// Concatenate the frames
-		byte[] valid = new byte[FRAME_LENGTH * 2];
-		System.arraycopy(frame, 0, valid, 0, FRAME_LENGTH);
-		System.arraycopy(frame1, 0, valid, FRAME_LENGTH, FRAME_LENGTH);
+		byte[] valid = new byte[MAX_FRAME_LENGTH * 2];
+		System.arraycopy(frame, 0, valid, 0, MAX_FRAME_LENGTH);
+		System.arraycopy(frame1, 0, valid, MAX_FRAME_LENGTH, MAX_FRAME_LENGTH);
 		// Read the frames
 		ByteArrayInputStream in = new ByteArrayInputStream(valid);
 		StreamDecrypterImpl i = new StreamDecrypterImpl(in, frameCipher,
-				frameKey, FRAME_LENGTH);
+				frameKey);
 		byte[] payload = new byte[MAX_PAYLOAD_LENGTH];
 		assertEquals(123, i.readFrame(payload));
 		assertEquals(123, i.readFrame(payload));
@@ -60,14 +61,14 @@ public class StreamDecrypterImplTest extends BriarTestCase {
 	@Test
 	public void testTruncatedFrameThrowsException() throws Exception {
 		// Generate a valid frame
-		byte[] frame = generateFrame(0, FRAME_LENGTH, 123, false, false);
+		byte[] frame = generateFrame(0, MAX_FRAME_LENGTH, 123, false, false);
 		// Chop off the last byte
-		byte[] truncated = new byte[FRAME_LENGTH - 1];
-		System.arraycopy(frame, 0, truncated, 0, FRAME_LENGTH - 1);
+		byte[] truncated = new byte[MAX_FRAME_LENGTH - 1];
+		System.arraycopy(frame, 0, truncated, 0, MAX_FRAME_LENGTH - 1);
 		// Try to read the frame, which should fail due to truncation
 		ByteArrayInputStream in = new ByteArrayInputStream(truncated);
 		StreamDecrypterImpl i = new StreamDecrypterImpl(in, frameCipher,
-				frameKey, FRAME_LENGTH);
+				frameKey);
 		try {
 			i.readFrame(new byte[MAX_PAYLOAD_LENGTH]);
 			fail();
@@ -77,13 +78,13 @@ public class StreamDecrypterImplTest extends BriarTestCase {
 	@Test
 	public void testModifiedFrameThrowsException() throws Exception {
 		// Generate a valid frame
-		byte[] frame = generateFrame(0, FRAME_LENGTH, 123, false, false);
+		byte[] frame = generateFrame(0, MAX_FRAME_LENGTH, 123, false, false);
 		// Modify a randomly chosen byte of the frame
-		frame[(int) (Math.random() * FRAME_LENGTH)] ^= 1;
+		frame[(int) (Math.random() * MAX_FRAME_LENGTH)] ^= 1;
 		// Try to read the frame, which should fail due to modification
 		ByteArrayInputStream in = new ByteArrayInputStream(frame);
 		StreamDecrypterImpl i = new StreamDecrypterImpl(in, frameCipher,
-				frameKey, FRAME_LENGTH);
+				frameKey);
 		try {
 			i.readFrame(new byte[MAX_PAYLOAD_LENGTH]);
 			fail();
@@ -93,11 +94,12 @@ public class StreamDecrypterImplTest extends BriarTestCase {
 	@Test
 	public void testShortNonFinalFrameThrowsException() throws Exception {
 		// Generate a short non-final frame
-		byte[] frame = generateFrame(0, FRAME_LENGTH - 1, 123, false, false);
+		byte[] frame = generateFrame(0, MAX_FRAME_LENGTH - 1, 123, false,
+				false);
 		// Try to read the frame, which should fail due to invalid length
 		ByteArrayInputStream in = new ByteArrayInputStream(frame);
 		StreamDecrypterImpl i = new StreamDecrypterImpl(in, frameCipher,
-				frameKey, FRAME_LENGTH);
+				frameKey);
 		try {
 			i.readFrame(new byte[MAX_PAYLOAD_LENGTH]);
 			fail();
@@ -107,11 +109,11 @@ public class StreamDecrypterImplTest extends BriarTestCase {
 	@Test
 	public void testShortFinalFrameDoesNotThrowException() throws Exception {
 		// Generate a short final frame
-		byte[] frame = generateFrame(0, FRAME_LENGTH - 1, 123, true, false);
+		byte[] frame = generateFrame(0, MAX_FRAME_LENGTH - 1, 123, true, false);
 		// Read the frame
 		ByteArrayInputStream in = new ByteArrayInputStream(frame);
 		StreamDecrypterImpl i = new StreamDecrypterImpl(in, frameCipher,
-				frameKey, FRAME_LENGTH);
+				frameKey);
 		int length = i.readFrame(new byte[MAX_PAYLOAD_LENGTH]);
 		assertEquals(123, length);
 	}
@@ -119,12 +121,12 @@ public class StreamDecrypterImplTest extends BriarTestCase {
 	@Test
 	public void testInvalidPayloadLengthThrowsException() throws Exception {
 		// Generate a frame with an invalid payload length
-		byte[] frame = generateFrame(0, FRAME_LENGTH, MAX_PAYLOAD_LENGTH + 1,
-				false, false);
+		byte[] frame = generateFrame(0, MAX_FRAME_LENGTH, 123, false, false);
+		ByteUtils.writeUint16(MAX_PAYLOAD_LENGTH + 1, frame, 0);
 		// Try to read the frame, which should fail due to invalid length
 		ByteArrayInputStream in = new ByteArrayInputStream(frame);
 		StreamDecrypterImpl i = new StreamDecrypterImpl(in, frameCipher,
-				frameKey, FRAME_LENGTH);
+				frameKey);
 		try {
 			i.readFrame(new byte[MAX_PAYLOAD_LENGTH]);
 			fail();
@@ -134,11 +136,11 @@ public class StreamDecrypterImplTest extends BriarTestCase {
 	@Test
 	public void testNonZeroPaddingThrowsException() throws Exception {
 		// Generate a frame with bad padding
-		byte[] frame = generateFrame(0, FRAME_LENGTH, 123, false, true);
+		byte[] frame = generateFrame(0, MAX_FRAME_LENGTH, 123, false, true);
 		// Try to read the frame, which should fail due to bad padding
 		ByteArrayInputStream in = new ByteArrayInputStream(frame);
 		StreamDecrypterImpl i = new StreamDecrypterImpl(in, frameCipher,
-				frameKey, FRAME_LENGTH);
+				frameKey);
 		try {
 			i.readFrame(new byte[MAX_PAYLOAD_LENGTH]);
 			fail();
@@ -148,17 +150,18 @@ public class StreamDecrypterImplTest extends BriarTestCase {
 	@Test
 	public void testCannotReadBeyondFinalFrame() throws Exception {
 		// Generate a valid final frame and another valid final frame after it
-		byte[] frame = generateFrame(0, FRAME_LENGTH, MAX_PAYLOAD_LENGTH, true,
-				false);
-		byte[] frame1 = generateFrame(1, FRAME_LENGTH, 123, true, false);
+		byte[] frame = generateFrame(0, MAX_FRAME_LENGTH, MAX_PAYLOAD_LENGTH,
+				true, false);
+		byte[] frame1 = generateFrame(1, MAX_FRAME_LENGTH, 123, true, false);
 		// Concatenate the frames
-		byte[] extraFrame = new byte[FRAME_LENGTH * 2];
-		System.arraycopy(frame, 0, extraFrame, 0, FRAME_LENGTH);
-		System.arraycopy(frame1, 0, extraFrame, FRAME_LENGTH, FRAME_LENGTH);
+		byte[] extraFrame = new byte[MAX_FRAME_LENGTH * 2];
+		System.arraycopy(frame, 0, extraFrame, 0, MAX_FRAME_LENGTH);
+		System.arraycopy(frame1, 0, extraFrame, MAX_FRAME_LENGTH,
+				MAX_FRAME_LENGTH);
 		// Read the final frame, which should first read the tag
 		ByteArrayInputStream in = new ByteArrayInputStream(extraFrame);
 		StreamDecrypterImpl i = new StreamDecrypterImpl(in, frameCipher,
-				frameKey, FRAME_LENGTH);
+				frameKey);
 		byte[] payload = new byte[MAX_PAYLOAD_LENGTH];
 		assertEquals(MAX_PAYLOAD_LENGTH, i.readFrame(payload));
 		// The frame after the final frame should not be read
diff --git a/briar-tests/src/org/briarproject/crypto/StreamEncrypterImplTest.java b/briar-tests/src/org/briarproject/crypto/StreamEncrypterImplTest.java
index d4f8b33a5b767f1fb128594fc551884ef2808145..8b5c3d74c8052234462255edfa9b5aceaf0d502f 100644
--- a/briar-tests/src/org/briarproject/crypto/StreamEncrypterImplTest.java
+++ b/briar-tests/src/org/briarproject/crypto/StreamEncrypterImplTest.java
@@ -4,6 +4,7 @@ import static org.briarproject.api.transport.TransportConstants.AAD_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.HEADER_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.IV_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.MAC_LENGTH;
+import static org.briarproject.api.transport.TransportConstants.MAX_FRAME_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.TAG_LENGTH;
 
 import java.io.ByteArrayOutputStream;
@@ -24,8 +25,6 @@ public class StreamEncrypterImplTest extends BriarTestCase {
 
 	// FIXME: This is an integration test, not a unit test
 
-	private static final int FRAME_LENGTH = 1024;
-
 	private final CryptoComponent crypto;
 	private final AuthenticatedCipher frameCipher;
 
@@ -40,8 +39,8 @@ public class StreamEncrypterImplTest extends BriarTestCase {
 	public void testEncryptionWithoutTag() throws Exception {
 		int payloadLength = 123;
 		byte[] iv = new byte[IV_LENGTH], aad = new byte[AAD_LENGTH];
-		byte[] plaintext = new byte[FRAME_LENGTH - MAC_LENGTH];
-		byte[] ciphertext = new byte[FRAME_LENGTH];
+		byte[] plaintext = new byte[MAX_FRAME_LENGTH - MAC_LENGTH];
+		byte[] ciphertext = new byte[MAX_FRAME_LENGTH];
 		SecretKey frameKey = crypto.generateSecretKey();
 		// Calculate the expected ciphertext
 		FrameEncoder.encodeIv(iv, 0);
@@ -51,12 +50,12 @@ public class StreamEncrypterImplTest extends BriarTestCase {
 		frameCipher.doFinal(plaintext, 0, plaintext.length, ciphertext, 0);
 		// Check that the actual ciphertext matches what's expected
 		ByteArrayOutputStream out = new ByteArrayOutputStream();
-		StreamEncrypterImpl o = new StreamEncrypterImpl(out,
-				frameCipher, frameKey, FRAME_LENGTH, null);
+		StreamEncrypterImpl o = new StreamEncrypterImpl(out, frameCipher,
+				frameKey, null);
 		o.writeFrame(new byte[payloadLength], payloadLength, false);
 		byte[] actual = out.toByteArray();
-		assertEquals(FRAME_LENGTH, actual.length);
-		for(int i = 0; i < FRAME_LENGTH; i++)
+		assertEquals(MAX_FRAME_LENGTH, actual.length);
+		for(int i = 0; i < MAX_FRAME_LENGTH; i++)
 			assertEquals(ciphertext[i], actual[i]);
 	}
 
@@ -66,8 +65,8 @@ public class StreamEncrypterImplTest extends BriarTestCase {
 		new Random().nextBytes(tag);
 		int payloadLength = 123;
 		byte[] iv = new byte[IV_LENGTH], aad = new byte[AAD_LENGTH];
-		byte[] plaintext = new byte[FRAME_LENGTH - MAC_LENGTH];
-		byte[] ciphertext = new byte[FRAME_LENGTH];
+		byte[] plaintext = new byte[MAX_FRAME_LENGTH - MAC_LENGTH];
+		byte[] ciphertext = new byte[MAX_FRAME_LENGTH];
 		SecretKey frameKey = crypto.generateSecretKey();
 		// Calculate the expected ciphertext
 		FrameEncoder.encodeIv(iv, 0);
@@ -77,13 +76,13 @@ public class StreamEncrypterImplTest extends BriarTestCase {
 		frameCipher.doFinal(plaintext, 0, plaintext.length, ciphertext, 0);
 		// Check that the actual tag and ciphertext match what's expected
 		ByteArrayOutputStream out = new ByteArrayOutputStream();
-		StreamEncrypterImpl o = new StreamEncrypterImpl(out,
-				frameCipher, frameKey, FRAME_LENGTH, tag);
+		StreamEncrypterImpl o = new StreamEncrypterImpl(out, frameCipher,
+				frameKey, tag);
 		o.writeFrame(new byte[payloadLength], payloadLength, false);
 		byte[] actual = out.toByteArray();
-		assertEquals(TAG_LENGTH + FRAME_LENGTH, actual.length);
+		assertEquals(TAG_LENGTH + MAX_FRAME_LENGTH, actual.length);
 		for(int i = 0; i < TAG_LENGTH; i++) assertEquals(tag[i], actual[i]);
-		for(int i = 0; i < FRAME_LENGTH; i++)
+		for(int i = 0; i < MAX_FRAME_LENGTH; i++)
 			assertEquals(ciphertext[i], actual[TAG_LENGTH + i]);
 	}
 
@@ -93,10 +92,10 @@ public class StreamEncrypterImplTest extends BriarTestCase {
 		new Random().nextBytes(tag);
 		ByteArrayOutputStream out = new ByteArrayOutputStream();
 		// Initiator's constructor
-		StreamEncrypterImpl o = new StreamEncrypterImpl(out,
-				frameCipher, crypto.generateSecretKey(), FRAME_LENGTH, tag);
+		StreamEncrypterImpl o = new StreamEncrypterImpl(out, frameCipher,
+				crypto.generateSecretKey(), tag);
 		// Write an empty final frame without having written any other frames
-		o.writeFrame(new byte[FRAME_LENGTH - MAC_LENGTH], 0, true);
+		o.writeFrame(new byte[MAX_FRAME_LENGTH - MAC_LENGTH], 0, true);
 		// The tag and the empty frame should be written to the output stream
 		assertEquals(TAG_LENGTH + HEADER_LENGTH + MAC_LENGTH, out.size());
 	}
diff --git a/briar-tests/src/org/briarproject/messaging/SimplexMessagingIntegrationTest.java b/briar-tests/src/org/briarproject/messaging/SimplexMessagingIntegrationTest.java
index d0a8359af4da6399c71cbbeb3b5acbbdc493552f..75583607001c8e619b3dd5771deb991acec71b8a 100644
--- a/briar-tests/src/org/briarproject/messaging/SimplexMessagingIntegrationTest.java
+++ b/briar-tests/src/org/briarproject/messaging/SimplexMessagingIntegrationTest.java
@@ -3,7 +3,6 @@ package org.briarproject.messaging;
 import static org.briarproject.api.AuthorConstants.MAX_PUBLIC_KEY_LENGTH;
 import static org.briarproject.api.messaging.MessagingConstants.GROUP_SALT_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.MAX_CLOCK_DIFFERENCE;
-import static org.briarproject.api.transport.TransportConstants.MAX_FRAME_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.TAG_LENGTH;
 
 import java.io.ByteArrayInputStream;
@@ -143,8 +142,8 @@ public class SimplexMessagingIntegrationTest extends BriarTestCase {
 		ByteArrayOutputStream out = new ByteArrayOutputStream();
 		StreamWriterFactory streamWriterFactory =
 				alice.getInstance(StreamWriterFactory.class);
-		OutputStream streamWriter = streamWriterFactory.createStreamWriter(out,
-				MAX_FRAME_LENGTH, ctx);
+		OutputStream streamWriter =
+				streamWriterFactory.createStreamWriter(out, ctx);
 		// Create an outgoing messaging session
 		EventBus eventBus = alice.getInstance(EventBus.class);
 		PacketWriterFactory packetWriterFactory =
@@ -205,8 +204,8 @@ public class SimplexMessagingIntegrationTest extends BriarTestCase {
 		// Create a stream reader
 		StreamReaderFactory streamReaderFactory =
 				bob.getInstance(StreamReaderFactory.class);
-		InputStream streamReader = streamReaderFactory.createStreamReader(in,
-				MAX_FRAME_LENGTH, ctx);
+		InputStream streamReader =
+				streamReaderFactory.createStreamReader(in, ctx);
 		// Create an incoming messaging session
 		EventBus eventBus = bob.getInstance(EventBus.class);
 		MessageVerifier messageVerifier =
diff --git a/briar-tests/src/org/briarproject/plugins/bluetooth/BluetoothClientTest.java b/briar-tests/src/org/briarproject/plugins/bluetooth/BluetoothClientTest.java
index 3b86da8a1bd3a8f80c79445f80d14082261921c9..b046f3a6bc615862785b3c9c564c45342fd25bdd 100644
--- a/briar-tests/src/org/briarproject/plugins/bluetooth/BluetoothClientTest.java
+++ b/briar-tests/src/org/briarproject/plugins/bluetooth/BluetoothClientTest.java
@@ -23,12 +23,12 @@ public class BluetoothClientTest extends DuplexClientTest {
 		p.put("address", serverAddress);
 		p.put("uuid", BluetoothTest.EMPTY_UUID);
 		Map<ContactId, TransportProperties> remote =
-			Collections.singletonMap(contactId, p);
+				Collections.singletonMap(contactId, p);
 		// Create the plugin
 		callback = new ClientCallback(new TransportConfig(),
 				new TransportProperties(), remote);
 		plugin = new BluetoothPlugin(executor, new SystemClock(),
-				new SecureRandom(), callback, 0, 0, 0);
+				new SecureRandom(), callback, 0, 0);
 	}
 
 	public static void main(String[] args) throws Exception {
diff --git a/briar-tests/src/org/briarproject/plugins/bluetooth/BluetoothServerTest.java b/briar-tests/src/org/briarproject/plugins/bluetooth/BluetoothServerTest.java
index 1dfbf841dcc52f64bf50f2e94e2d5a5422186c8a..121f71b4031db95c9a114cc1540e7397e565f405 100644
--- a/briar-tests/src/org/briarproject/plugins/bluetooth/BluetoothServerTest.java
+++ b/briar-tests/src/org/briarproject/plugins/bluetooth/BluetoothServerTest.java
@@ -23,7 +23,7 @@ public class BluetoothServerTest extends DuplexServerTest {
 		callback = new ServerCallback(new TransportConfig(), local,
 				Collections.singletonMap(contactId, new TransportProperties()));
 		plugin = new BluetoothPlugin(executor, new SystemClock(),
-				new SecureRandom(), callback, 0, 0, 0);
+				new SecureRandom(), callback, 0, 0);
 	}
 
 	public static void main(String[] args) throws Exception {
diff --git a/briar-tests/src/org/briarproject/plugins/file/RemovableDrivePluginTest.java b/briar-tests/src/org/briarproject/plugins/file/RemovableDrivePluginTest.java
index b8e4ee88b24ac4fe00e2a7babdb3c973d32f465e..5ae0bbb5030235a60ebb45aa0e05fb146155a34a 100644
--- a/briar-tests/src/org/briarproject/plugins/file/RemovableDrivePluginTest.java
+++ b/briar-tests/src/org/briarproject/plugins/file/RemovableDrivePluginTest.java
@@ -1,6 +1,5 @@
 package org.briarproject.plugins.file;
 
-import static org.briarproject.api.transport.TransportConstants.MAX_FRAME_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.MIN_STREAM_LENGTH;
 
 import java.io.File;
@@ -58,7 +57,7 @@ public class RemovableDrivePluginTest extends BriarTestCase {
 		}});
 
 		RemovableDrivePlugin plugin = new RemovableDrivePlugin(executor,
-				fileUtils, callback, finder, monitor, MAX_FRAME_LENGTH, 0);
+				fileUtils, callback, finder, monitor, 0);
 		plugin.start();
 
 		assertNull(plugin.createWriter(contactId));
@@ -93,7 +92,7 @@ public class RemovableDrivePluginTest extends BriarTestCase {
 		}});
 
 		RemovableDrivePlugin plugin = new RemovableDrivePlugin(executor,
-				fileUtils, callback, finder, monitor, MAX_FRAME_LENGTH, 0);
+				fileUtils, callback, finder, monitor, 0);
 		plugin.start();
 
 		assertNull(plugin.createWriter(contactId));
@@ -130,7 +129,7 @@ public class RemovableDrivePluginTest extends BriarTestCase {
 		}});
 
 		RemovableDrivePlugin plugin = new RemovableDrivePlugin(executor,
-				fileUtils, callback, finder, monitor, MAX_FRAME_LENGTH, 0);
+				fileUtils, callback, finder, monitor, 0);
 		plugin.start();
 
 		assertNull(plugin.createWriter(contactId));
@@ -169,7 +168,7 @@ public class RemovableDrivePluginTest extends BriarTestCase {
 		}});
 
 		RemovableDrivePlugin plugin = new RemovableDrivePlugin(executor,
-				fileUtils, callback, finder, monitor, MAX_FRAME_LENGTH, 0);
+				fileUtils, callback, finder, monitor, 0);
 		plugin.start();
 
 		assertNull(plugin.createWriter(contactId));
@@ -208,7 +207,7 @@ public class RemovableDrivePluginTest extends BriarTestCase {
 		}});
 
 		RemovableDrivePlugin plugin = new RemovableDrivePlugin(executor,
-				fileUtils, callback, finder, monitor, MAX_FRAME_LENGTH, 0);
+				fileUtils, callback, finder, monitor, 0);
 		plugin.start();
 
 		assertNotNull(plugin.createWriter(contactId));
@@ -251,7 +250,7 @@ public class RemovableDrivePluginTest extends BriarTestCase {
 		}});
 
 		RemovableDrivePlugin plugin = new RemovableDrivePlugin(executor,
-				fileUtils, callback, finder, monitor, MAX_FRAME_LENGTH, 0);
+				fileUtils, callback, finder, monitor, 0);
 		plugin.start();
 
 		TransportConnectionWriter writer = plugin.createWriter(contactId);
@@ -290,7 +289,7 @@ public class RemovableDrivePluginTest extends BriarTestCase {
 		}});
 
 		RemovableDrivePlugin plugin = new RemovableDrivePlugin(executor,
-				fileUtils, callback, finder, monitor, MAX_FRAME_LENGTH, 0);
+				fileUtils, callback, finder, monitor, 0);
 		plugin.start();
 
 		plugin.driveInserted(testDir);
@@ -310,7 +309,7 @@ public class RemovableDrivePluginTest extends BriarTestCase {
 				context.mock(RemovableDriveMonitor.class);
 
 		RemovableDrivePlugin plugin = new RemovableDrivePlugin(executor,
-				fileUtils, callback, finder, monitor, MAX_FRAME_LENGTH, 0);
+				fileUtils, callback, finder, monitor, 0);
 
 		assertFalse(plugin.isPossibleConnectionFilename("abcdefg.dat"));
 		assertFalse(plugin.isPossibleConnectionFilename("abcdefghi.dat"));
@@ -339,7 +338,7 @@ public class RemovableDrivePluginTest extends BriarTestCase {
 
 		RemovableDrivePlugin plugin = new RemovableDrivePlugin(
 				new ImmediateExecutor(), fileUtils, callback, finder, monitor,
-				MAX_FRAME_LENGTH, 0);
+				0);
 		plugin.start();
 
 		File f = new File(testDir, "abcdefgh.dat");
diff --git a/briar-tests/src/org/briarproject/plugins/modem/ModemPluginTest.java b/briar-tests/src/org/briarproject/plugins/modem/ModemPluginTest.java
index 3aa5dab235858e3c1295873284ed2b1f52e977f3..7966ef8c489d4de3d23f7a11786a1f6ad4f6e702 100644
--- a/briar-tests/src/org/briarproject/plugins/modem/ModemPluginTest.java
+++ b/briar-tests/src/org/briarproject/plugins/modem/ModemPluginTest.java
@@ -24,7 +24,7 @@ public class ModemPluginTest extends BriarTestCase {
 		final SerialPortList serialPortList =
 				context.mock(SerialPortList.class);
 		final ModemPlugin plugin = new ModemPlugin(modemFactory,
-				serialPortList, null, 0, 0);
+				serialPortList, null, 0);
 		final Modem modem = context.mock(Modem.class);
 		context.checking(new Expectations() {{
 			oneOf(serialPortList).getPortNames();
@@ -58,7 +58,7 @@ public class ModemPluginTest extends BriarTestCase {
 		final DuplexPluginCallback callback =
 				context.mock(DuplexPluginCallback.class);
 		final ModemPlugin plugin = new ModemPlugin(modemFactory,
-				serialPortList, callback, 0, 0);
+				serialPortList, callback, 0);
 		final Modem modem = context.mock(Modem.class);
 		final TransportProperties local = new TransportProperties();
 		local.put("iso3166", ISO_1336);
@@ -99,7 +99,7 @@ public class ModemPluginTest extends BriarTestCase {
 		final DuplexPluginCallback callback =
 				context.mock(DuplexPluginCallback.class);
 		final ModemPlugin plugin = new ModemPlugin(modemFactory,
-				serialPortList, callback, 0, 0);
+				serialPortList, callback, 0);
 		final Modem modem = context.mock(Modem.class);
 		final TransportProperties local = new TransportProperties();
 		local.put("iso3166", ISO_1336);
@@ -140,7 +140,7 @@ public class ModemPluginTest extends BriarTestCase {
 		final DuplexPluginCallback callback =
 				context.mock(DuplexPluginCallback.class);
 		final ModemPlugin plugin = new ModemPlugin(modemFactory,
-				serialPortList, callback, 0, 0);
+				serialPortList, callback, 0);
 		final Modem modem = context.mock(Modem.class);
 		final TransportProperties local = new TransportProperties();
 		local.put("iso3166", ISO_1336);
diff --git a/briar-tests/src/org/briarproject/plugins/tcp/LanTcpClientTest.java b/briar-tests/src/org/briarproject/plugins/tcp/LanTcpClientTest.java
index 3bf190ee8130118d23fd21b048ab8b7125f3272a..19168a5675aec21ec229602734a213081ac41285 100644
--- a/briar-tests/src/org/briarproject/plugins/tcp/LanTcpClientTest.java
+++ b/briar-tests/src/org/briarproject/plugins/tcp/LanTcpClientTest.java
@@ -15,7 +15,6 @@ import org.briarproject.plugins.DuplexClientTest;
 // is running on another machine
 public class LanTcpClientTest extends DuplexClientTest {
 
-	private static final int MAX_FRAME_LENGTH = 1024;
 	private static final int MAX_LATENCY = 60 * 1000;
 	private static final int MAX_IDLE_TIME = 30 * 1000;
 	private static final int POLLING_INTERVAL = 60 * 1000;
@@ -31,8 +30,8 @@ public class LanTcpClientTest extends DuplexClientTest {
 		// Create the plugin
 		callback = new ClientCallback(new TransportConfig(),
 				new TransportProperties(), remote);
-		plugin = new LanTcpPlugin(executor, callback, MAX_FRAME_LENGTH,
-				MAX_LATENCY, MAX_IDLE_TIME, POLLING_INTERVAL);
+		plugin = new LanTcpPlugin(executor, callback,  MAX_LATENCY,
+				MAX_IDLE_TIME, POLLING_INTERVAL);
 	}
 
 	public static void main(String[] args) throws Exception {
diff --git a/briar-tests/src/org/briarproject/plugins/tcp/LanTcpPluginTest.java b/briar-tests/src/org/briarproject/plugins/tcp/LanTcpPluginTest.java
index c65fe2f96ea3e0a357f6228436fb2ddb4e8c3d9a..f3a321bbcc0242b84c137c9e2cce7512c795c9a8 100644
--- a/briar-tests/src/org/briarproject/plugins/tcp/LanTcpPluginTest.java
+++ b/briar-tests/src/org/briarproject/plugins/tcp/LanTcpPluginTest.java
@@ -32,7 +32,7 @@ public class LanTcpPluginTest extends BriarTestCase {
 
 	@Test
 	public void testAddressesAreOnSameLan() {
-		LanTcpPlugin plugin = new LanTcpPlugin(null, null, 0, 0, 0, 0);
+		LanTcpPlugin plugin = new LanTcpPlugin(null, null, 0, 0, 0);
 		// Local and remote in 10.0.0.0/8 should return true
 		assertTrue(plugin.addressesAreOnSameLan(makeAddress(10, 0, 0, 0),
 				makeAddress(10, 255, 255, 255)));
@@ -81,7 +81,7 @@ public class LanTcpPluginTest extends BriarTestCase {
 		}
 		Callback callback = new Callback();
 		Executor executor = Executors.newCachedThreadPool();
-		DuplexPlugin plugin = new LanTcpPlugin(executor, callback, 0, 0, 0, 0);
+		DuplexPlugin plugin = new LanTcpPlugin(executor, callback, 0, 0, 0);
 		plugin.start();
 		// The plugin should have bound a socket and stored the port number
 		assertTrue(callback.propertiesLatch.await(5, SECONDS));
@@ -113,7 +113,7 @@ public class LanTcpPluginTest extends BriarTestCase {
 		}
 		Callback callback = new Callback();
 		Executor executor = Executors.newCachedThreadPool();
-		DuplexPlugin plugin = new LanTcpPlugin(executor, callback, 0, 0, 0, 0);
+		DuplexPlugin plugin = new LanTcpPlugin(executor, callback, 0, 0, 0);
 		plugin.start();
 		// The plugin should have bound a socket and stored the port number
 		assertTrue(callback.propertiesLatch.await(5, SECONDS));
diff --git a/briar-tests/src/org/briarproject/plugins/tcp/LanTcpServerTest.java b/briar-tests/src/org/briarproject/plugins/tcp/LanTcpServerTest.java
index 198489c0062d9e2db88807dbbebe7259fa9ce9ce..7531978148639e5b2b1eb232ecacbb8caf505582 100644
--- a/briar-tests/src/org/briarproject/plugins/tcp/LanTcpServerTest.java
+++ b/briar-tests/src/org/briarproject/plugins/tcp/LanTcpServerTest.java
@@ -13,7 +13,6 @@ import org.briarproject.plugins.DuplexServerTest;
 // is running on another machine
 public class LanTcpServerTest extends DuplexServerTest {
 
-	private static final int MAX_FRAME_LENGTH = 1024;
 	private static final int MAX_LATENCY = 60 * 1000;
 	private static final int MAX_IDLE_TIME = 30 * 1000;
 	private static final int POLLING_INTERVAL = 60 * 1000;
@@ -22,8 +21,8 @@ public class LanTcpServerTest extends DuplexServerTest {
 		callback = new ServerCallback(new TransportConfig(),
 				new TransportProperties(),
 				Collections.singletonMap(contactId, new TransportProperties()));
-		plugin = new LanTcpPlugin(executor, callback, MAX_FRAME_LENGTH,
-				MAX_LATENCY, MAX_IDLE_TIME, POLLING_INTERVAL);
+		plugin = new LanTcpPlugin(executor, callback, MAX_LATENCY,
+				MAX_IDLE_TIME, POLLING_INTERVAL);
 	}
 
 	public static void main(String[] args) throws Exception {
diff --git a/briar-tests/src/org/briarproject/transport/StreamReaderImplTest.java b/briar-tests/src/org/briarproject/transport/StreamReaderImplTest.java
index 988299852d0506172aebf4280feedeb6e8148789..3a71ce74cc4f7aafd0ff6a380b163735fad40494 100644
--- a/briar-tests/src/org/briarproject/transport/StreamReaderImplTest.java
+++ b/briar-tests/src/org/briarproject/transport/StreamReaderImplTest.java
@@ -2,6 +2,7 @@ package org.briarproject.transport;
 
 import static org.briarproject.api.transport.TransportConstants.HEADER_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.MAC_LENGTH;
+import static org.briarproject.api.transport.TransportConstants.MAX_FRAME_LENGTH;
 
 import org.briarproject.BriarTestCase;
 import org.briarproject.api.crypto.StreamDecrypter;
@@ -11,9 +12,8 @@ import org.junit.Test;
 
 public class StreamReaderImplTest extends BriarTestCase {
 
-	private static final int FRAME_LENGTH = 1024;
 	private static final int MAX_PAYLOAD_LENGTH =
-			FRAME_LENGTH - HEADER_LENGTH - MAC_LENGTH;
+			MAX_FRAME_LENGTH - HEADER_LENGTH - MAC_LENGTH;
 
 	@Test
 	public void testEmptyFramesAreSkipped() throws Exception {
@@ -29,7 +29,7 @@ public class StreamReaderImplTest extends BriarTestCase {
 			oneOf(decrypter).readFrame(with(any(byte[].class)));
 			will(returnValue(-1)); // No more frames
 		}});
-		StreamReaderImpl r = new StreamReaderImpl(decrypter, FRAME_LENGTH);
+		StreamReaderImpl r = new StreamReaderImpl(decrypter);
 		assertEquals(0, r.read()); // Skip the first empty frame, read a byte
 		assertEquals(0, r.read()); // Read another byte
 		assertEquals(-1, r.read()); // Skip the second empty frame, reach EOF
@@ -52,7 +52,7 @@ public class StreamReaderImplTest extends BriarTestCase {
 			oneOf(decrypter).readFrame(with(any(byte[].class)));
 			will(returnValue(-1)); // No more frames
 		}});
-		StreamReaderImpl r = new StreamReaderImpl(decrypter, FRAME_LENGTH);
+		StreamReaderImpl r = new StreamReaderImpl(decrypter);
 		byte[] buf = new byte[MAX_PAYLOAD_LENGTH];
 		// Skip the first empty frame, read the two payload bytes
 		assertEquals(2, r.read(buf));
@@ -74,7 +74,7 @@ public class StreamReaderImplTest extends BriarTestCase {
 			oneOf(decrypter).readFrame(with(any(byte[].class)));
 			will(returnValue(-1)); // No more frames
 		}});
-		StreamReaderImpl r = new StreamReaderImpl(decrypter, FRAME_LENGTH);
+		StreamReaderImpl r = new StreamReaderImpl(decrypter);
 		byte[] buf = new byte[MAX_PAYLOAD_LENGTH / 2];
 		// Read the first half of the payload
 		assertEquals(MAX_PAYLOAD_LENGTH / 2, r.read(buf));
@@ -96,7 +96,7 @@ public class StreamReaderImplTest extends BriarTestCase {
 			oneOf(decrypter).readFrame(with(any(byte[].class)));
 			will(returnValue(-1)); // No more frames
 		}});
-		StreamReaderImpl r = new StreamReaderImpl(decrypter, FRAME_LENGTH);
+		StreamReaderImpl r = new StreamReaderImpl(decrypter);
 		byte[] buf = new byte[MAX_PAYLOAD_LENGTH];
 		// Read the first half of the payload
 		assertEquals(MAX_PAYLOAD_LENGTH / 2, r.read(buf, MAX_PAYLOAD_LENGTH / 2,
diff --git a/briar-tests/src/org/briarproject/transport/StreamWriterImplTest.java b/briar-tests/src/org/briarproject/transport/StreamWriterImplTest.java
index 688621bd1511766e0bc8f7bf6f1ff1a170e4c385..4ea8916dd0b6f984f3c976ac683f16170264dee2 100644
--- a/briar-tests/src/org/briarproject/transport/StreamWriterImplTest.java
+++ b/briar-tests/src/org/briarproject/transport/StreamWriterImplTest.java
@@ -2,6 +2,7 @@ package org.briarproject.transport;
 
 import static org.briarproject.api.transport.TransportConstants.HEADER_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.MAC_LENGTH;
+import static org.briarproject.api.transport.TransportConstants.MAX_FRAME_LENGTH;
 
 import org.briarproject.BriarTestCase;
 import org.briarproject.api.crypto.StreamEncrypter;
@@ -11,9 +12,8 @@ import org.junit.Test;
 
 public class StreamWriterImplTest extends BriarTestCase {
 
-	private static final int FRAME_LENGTH = 1024;
 	private static final int MAX_PAYLOAD_LENGTH =
-			FRAME_LENGTH - HEADER_LENGTH - MAC_LENGTH;
+			MAX_FRAME_LENGTH - HEADER_LENGTH - MAC_LENGTH;
 
 	@Test
 	public void testCloseWithoutWritingWritesFinalFrame() throws Exception {
@@ -26,7 +26,7 @@ public class StreamWriterImplTest extends BriarTestCase {
 			// Flush the stream
 			oneOf(encrypter).flush();
 		}});
-		StreamWriterImpl w = new StreamWriterImpl(encrypter, FRAME_LENGTH);
+		StreamWriterImpl w = new StreamWriterImpl(encrypter);
 		w.close();
 		context.assertIsSatisfied();
 	}
@@ -36,7 +36,7 @@ public class StreamWriterImplTest extends BriarTestCase {
 			throws Exception {
 		Mockery context = new Mockery();
 		final StreamEncrypter encrypter = context.mock(StreamEncrypter.class);
-		StreamWriterImpl w = new StreamWriterImpl(encrypter, FRAME_LENGTH);
+		StreamWriterImpl w = new StreamWriterImpl(encrypter);
 		context.checking(new Expectations() {{
 			// Write a non-final frame with an empty payload
 			oneOf(encrypter).writeFrame(with(any(byte[].class)), with(0),
@@ -63,7 +63,7 @@ public class StreamWriterImplTest extends BriarTestCase {
 			throws Exception {
 		Mockery context = new Mockery();
 		final StreamEncrypter encrypter = context.mock(StreamEncrypter.class);
-		StreamWriterImpl w = new StreamWriterImpl(encrypter, FRAME_LENGTH);
+		StreamWriterImpl w = new StreamWriterImpl(encrypter);
 		context.checking(new Expectations() {{
 			// Write a non-final frame with one payload byte
 			oneOf(encrypter).writeFrame(with(any(byte[].class)), with(1),
@@ -90,7 +90,7 @@ public class StreamWriterImplTest extends BriarTestCase {
 	public void testSingleByteWritesWriteFullFrame() throws Exception {
 		Mockery context = new Mockery();
 		final StreamEncrypter encrypter = context.mock(StreamEncrypter.class);
-		StreamWriterImpl w = new StreamWriterImpl(encrypter, FRAME_LENGTH);
+		StreamWriterImpl w = new StreamWriterImpl(encrypter);
 		context.checking(new Expectations() {{
 			// Write a full non-final frame
 			oneOf(encrypter).writeFrame(with(any(byte[].class)),
@@ -116,7 +116,7 @@ public class StreamWriterImplTest extends BriarTestCase {
 	public void testMultiByteWritesWriteFullFrames() throws Exception {
 		Mockery context = new Mockery();
 		final StreamEncrypter encrypter = context.mock(StreamEncrypter.class);
-		StreamWriterImpl w = new StreamWriterImpl(encrypter, FRAME_LENGTH);
+		StreamWriterImpl w = new StreamWriterImpl(encrypter);
 		context.checking(new Expectations() {{
 			// Write two full non-final frames
 			exactly(2).of(encrypter).writeFrame(with(any(byte[].class)),
@@ -147,7 +147,7 @@ public class StreamWriterImplTest extends BriarTestCase {
 	public void testLargeMultiByteWriteWritesFullFrames() throws Exception {
 		Mockery context = new Mockery();
 		final StreamEncrypter encrypter = context.mock(StreamEncrypter.class);
-		StreamWriterImpl w = new StreamWriterImpl(encrypter, FRAME_LENGTH);
+		StreamWriterImpl w = new StreamWriterImpl(encrypter);
 		context.checking(new Expectations() {{
 			// Write two full non-final frames
 			exactly(2).of(encrypter).writeFrame(with(any(byte[].class)),
diff --git a/briar-tests/src/org/briarproject/transport/TestStreamDecrypter.java b/briar-tests/src/org/briarproject/transport/TestStreamDecrypter.java
index b0438801e6beb25915c8566418921e6d04d6e9a7..b901678a6beca92fbad25d2065abda5ac8710fec 100644
--- a/briar-tests/src/org/briarproject/transport/TestStreamDecrypter.java
+++ b/briar-tests/src/org/briarproject/transport/TestStreamDecrypter.java
@@ -2,6 +2,7 @@ package org.briarproject.transport;
 
 import static org.briarproject.api.transport.TransportConstants.HEADER_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.MAC_LENGTH;
+import static org.briarproject.api.transport.TransportConstants.MAX_FRAME_LENGTH;
 
 import java.io.EOFException;
 import java.io.IOException;
@@ -16,9 +17,9 @@ class TestStreamDecrypter implements StreamDecrypter {
 	private final InputStream in;
 	private final byte[] frame;
 
-	TestStreamDecrypter(InputStream in, int frameLength) {
+	TestStreamDecrypter(InputStream in) {
 		this.in = in;
-		frame = new byte[frameLength];
+		frame = new byte[MAX_FRAME_LENGTH];
 	}
 
 	public int readFrame(byte[] payload) throws IOException {
diff --git a/briar-tests/src/org/briarproject/transport/TestStreamEncrypter.java b/briar-tests/src/org/briarproject/transport/TestStreamEncrypter.java
index 4ad4c667c6203ef7d0a7d01f9c56c5238f5d986f..6939c71b544595a6d337be1277a7354e8fd586de 100644
--- a/briar-tests/src/org/briarproject/transport/TestStreamEncrypter.java
+++ b/briar-tests/src/org/briarproject/transport/TestStreamEncrypter.java
@@ -2,6 +2,7 @@ package org.briarproject.transport;
 
 import static org.briarproject.api.transport.TransportConstants.HEADER_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.MAC_LENGTH;
+import static org.briarproject.api.transport.TransportConstants.MAX_FRAME_LENGTH;
 
 import java.io.IOException;
 import java.io.OutputStream;
@@ -16,10 +17,10 @@ class TestStreamEncrypter implements StreamEncrypter {
 
 	private boolean writeTag = true;
 
-	TestStreamEncrypter(OutputStream out, int frameLength, byte[] tag) {
+	TestStreamEncrypter(OutputStream out, byte[] tag) {
 		this.out = out;
 		this.tag = tag;
-		frame = new byte[frameLength];
+		frame = new byte[MAX_FRAME_LENGTH];
 	}
 
 	public void writeFrame(byte[] payload, int payloadLength,
diff --git a/briar-tests/src/org/briarproject/transport/TransportIntegrationTest.java b/briar-tests/src/org/briarproject/transport/TransportIntegrationTest.java
index f55e5b6e1a8ef83fc5d504ca5a5ef79fe6fb2a1b..af006350ae623ecc622a2c582f5b896389727be8 100644
--- a/briar-tests/src/org/briarproject/transport/TransportIntegrationTest.java
+++ b/briar-tests/src/org/briarproject/transport/TransportIntegrationTest.java
@@ -1,5 +1,6 @@
 package org.briarproject.transport;
 
+import static org.briarproject.api.transport.TransportConstants.MAX_FRAME_LENGTH;
 import static org.briarproject.api.transport.TransportConstants.TAG_LENGTH;
 import static org.junit.Assert.assertArrayEquals;
 
@@ -17,8 +18,6 @@ import org.junit.Test;
 
 public class TransportIntegrationTest extends BriarTestCase {
 
-	private final int FRAME_LENGTH = 2048;
-
 	private final Random random;
 
 	public TransportIntegrationTest() {
@@ -40,31 +39,28 @@ public class TransportIntegrationTest extends BriarTestCase {
 		byte[] tag = new byte[TAG_LENGTH];
 		random.nextBytes(tag);
 		// Generate two frames with random payloads
-		byte[] payload1 = new byte[1234];
+		byte[] payload1 = new byte[123];
 		random.nextBytes(payload1);
 		byte[] payload2 = new byte[321];
 		random.nextBytes(payload2);
 		// Write the tag and the frames
 		ByteArrayOutputStream out = new ByteArrayOutputStream();
-		StreamEncrypter encrypter = new TestStreamEncrypter(out, FRAME_LENGTH,
-				tag);
-		OutputStream streamWriter = new StreamWriterImpl(encrypter,
-				FRAME_LENGTH);
+		StreamEncrypter encrypter = new TestStreamEncrypter(out, tag);
+		OutputStream streamWriter = new StreamWriterImpl(encrypter);
 		streamWriter.write(payload1);
 		streamWriter.flush();
 		streamWriter.write(payload2);
 		streamWriter.flush();
 		byte[] output = out.toByteArray();
-		assertEquals(TAG_LENGTH + FRAME_LENGTH * 2, output.length);
+		assertEquals(TAG_LENGTH + MAX_FRAME_LENGTH * 2, output.length);
 		// Read the tag back
 		ByteArrayInputStream in = new ByteArrayInputStream(output);
 		byte[] recoveredTag = new byte[tag.length];
 		read(in, recoveredTag);
 		assertArrayEquals(tag, recoveredTag);
 		// Read the frames back
-		StreamDecrypter decrypter = new TestStreamDecrypter(in, FRAME_LENGTH);
-		InputStream streamReader = new StreamReaderImpl(decrypter,
-				FRAME_LENGTH);
+		StreamDecrypter decrypter = new TestStreamDecrypter(in);
+		InputStream streamReader = new StreamReaderImpl(decrypter);
 		byte[] recoveredPayload1 = new byte[payload1.length];
 		read(streamReader, recoveredPayload1);
 		assertArrayEquals(payload1, recoveredPayload1);