I've proposed a patch for this behavior
http://svn.apache.org/viewvc?view=rev&revision=604274
http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/STATUS.txt?r1=604274&r2=604273&pathrev=604274
Filip
Filip Hanik - Dev Lists wrote:
that's correct, that's how it works.
I'll go over the specs to see if this is not what it is supposed to do
Filip
Paul Dumais wrote:
I am using Comet for by directional communication between a native java
client and a tomcat server.
I noticed that when sending chunks to the Tomcat server over the request
stream Tomcat does not like to receive a CRLF at the end of a chunk, it
is only accepting the CRLF at the beginning of the following chunk.
According to rfc2616 the CRLF should be at the end of each chunk:
http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.6.1
For example tomcat likes this type of chunk to be sent:
CRLF chunk-size CRLF chunk-data
But it does not like this format:
chunk-size CRLF chunk-data CRLF
Tomcat basically fires a Comet Read event to the CometProcessor with the
chunk data, but afterward fires an ERROR event with subevent type
IOEXCEPTION. I have tested this with Tomcat 6.0.14 as well as the trunk
(Dec 11th, 2007).
Here is the sample code of a java client that connects to a simple
CometEcho processor:
Socket s = new Socket("localhost", 8080);
OutputStream out = s.getOutputStream();
out.write(("POST /CometEcho HTTP/1.1\r\n" +
"Host: localhost:8080\r\n" +
"Transfer-Encoding: chunked\r\n" +
"\r\n").getBytes());
out.flush();
boolean first = true;
BufferedReader reader = new BufferedReader(new
InputStreamReader(System.in));
while (s.isConnected()) {
String line = reader.readLine();
//String chunk =
(first?"":"\r\n")+Integer.toHexString(line.length())+"\r\n"+line; //
tomcat only accepts this kind of chunk
String chunk =
Integer.toHexString(line.length())+"\r\n"+line+"\r\n"; // this format
should work according to rfc2616
first = false;
out.write(chunk.getBytes());
out.flush();
}
I was wondering if someone could explain this, and if this is by design,
or if I am using Comet incorrectly.
Thank you,
Paul
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