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Merge pull request #381 from fredericBregier/master

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Improve HTTP message streaming in decoder same as #380
This commit is contained in:
Frédéric Brégier 2012-06-05 10:05:34 -07:00
commit c2e3d305b4
1 changed files with 58 additions and 26 deletions
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84
codec-http/src/main/java/io/netty/handler/codec/http/HttpMessageDecoder.java
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@ -106,6 +106,7 @@ public abstract class HttpMessageDecoder extends ReplayingDecoder<Object, HttpMe
private ChannelBuffer content;
private long chunkSize;
private int headerSize;
private int contentRead;
/**
* The internal state of {@link HttpMessageDecoder}.
@ -235,17 +236,24 @@ public abstract class HttpMessageDecoder extends ReplayingDecoder<Object, HttpMe
return null;
}
case READ_VARIABLE_LENGTH_CONTENT: {
if (content == null) {
content = ChannelBuffers.dynamicBuffer();
int toRead = actualReadableBytes();
if (toRead > maxChunkSize) {
toRead = maxChunkSize;
}
if (!message.isChunked()) {
message.setChunked(true);
return new Object[] {message, new DefaultHttpChunk(buffer.readBytes(toRead))};
} else {
return new DefaultHttpChunk(buffer.readBytes(toRead));
}
//this will cause a replay error until the channel is closed where this will read what's left in the buffer
content.writeBytes(buffer.readBytes(buffer.readableBytes()));
return reset();
}
case READ_VARIABLE_LENGTH_CONTENT_AS_CHUNKS: {
// Keep reading data as a chunk until the end of connection is reached.
int chunkSize = Math.min(maxChunkSize, buffer.readableBytes());
HttpChunk chunk = new DefaultHttpChunk(buffer.readBytes(chunkSize));
int toRead = actualReadableBytes();
if (toRead > maxChunkSize) {
toRead = maxChunkSize;
}
HttpChunk chunk = new DefaultHttpChunk(buffer.readBytes(toRead));
if (!buffer.readable()) {
// Reached to the end of the connection.
@ -258,19 +266,23 @@ public abstract class HttpMessageDecoder extends ReplayingDecoder<Object, HttpMe
return chunk;
}
case READ_FIXED_LENGTH_CONTENT: {
//we have a content-length so we just read the correct number of bytes
readFixedLengthContent(buffer);
return reset();
return readFixedLengthContent(buffer);
}
case READ_FIXED_LENGTH_CONTENT_AS_CHUNKS: {
long chunkSize = this.chunkSize;
HttpChunk chunk;
if (chunkSize > maxChunkSize) {
chunk = new DefaultHttpChunk(buffer.readBytes(maxChunkSize));
chunkSize -= maxChunkSize;
assert this.chunkSize <= Integer.MAX_VALUE;
int chunkSize = (int) this.chunkSize;
int readLimit = actualReadableBytes();
int toRead = chunkSize;
if (toRead > maxChunkSize) {
toRead = maxChunkSize;
}
if (toRead > readLimit) {
toRead = readLimit;
}
HttpChunk chunk = new DefaultHttpChunk(buffer.readBytes(toRead));
if (chunkSize > toRead) {
chunkSize -= toRead;
} else {
assert chunkSize <= Integer.MAX_VALUE;
chunk = new DefaultHttpChunk(buffer.readBytes((int) chunkSize));
chunkSize = 0;
}
this.chunkSize = chunkSize;
@ -310,14 +322,20 @@ public abstract class HttpMessageDecoder extends ReplayingDecoder<Object, HttpMe
return chunk;
}
case READ_CHUNKED_CONTENT_AS_CHUNKS: {
long chunkSize = this.chunkSize;
HttpChunk chunk;
if (chunkSize > maxChunkSize) {
chunk = new DefaultHttpChunk(buffer.readBytes(maxChunkSize));
chunkSize -= maxChunkSize;
assert this.chunkSize <= Integer.MAX_VALUE;
int chunkSize = (int) this.chunkSize;
int readLimit = actualReadableBytes();
int toRead = chunkSize;
if (toRead > maxChunkSize) {
toRead = maxChunkSize;
}
if (toRead > readLimit) {
toRead = readLimit;
}
HttpChunk chunk = new DefaultHttpChunk(buffer.readBytes(toRead));
if (chunkSize > toRead) {
chunkSize -= toRead;
} else {
assert chunkSize <= Integer.MAX_VALUE;
chunk = new DefaultHttpChunk(buffer.readBytes((int) chunkSize));
chunkSize = 0;
}
this.chunkSize = chunkSize;
@ -414,15 +432,29 @@ public abstract class HttpMessageDecoder extends ReplayingDecoder<Object, HttpMe
}
}
private void readFixedLengthContent(ChannelBuffer buffer) {
private Object readFixedLengthContent(ChannelBuffer buffer) {
//we have a content-length so we just read the correct number of bytes
long length = HttpHeaders.getContentLength(message, -1);
assert length <= Integer.MAX_VALUE;
int toRead = (int) length - contentRead;
if (toRead > actualReadableBytes()) {
toRead = actualReadableBytes();
}
contentRead = contentRead + toRead;
if (length < contentRead) {
if (!message.isChunked()) {
message.setChunked(true);
return new Object[] {message, new DefaultHttpChunk(buffer.readBytes(toRead))};
} else {
return new DefaultHttpChunk(buffer.readBytes(toRead));
}
}
if (content == null) {
content = buffer.readBytes((int) length);
} else {
content.writeBytes(buffer.readBytes((int) length));
}
return reset();
}
private State readHeaders(ChannelBuffer buffer) throws TooLongFrameException {