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Posted to users@tomcat.apache.org by Darryl Pentz <dj...@yahoo.com> on 2008/09/08 15:50:19 UTC
Piggybacking HTTP with binary protocol
Last time I mailed the list, I was inquiring about implementing a custom connector or something along those lines to support a binary protocol along with HTTP. This approach proved flawed for various reasons, if not virtually impossible to do with the connector, processor, handler architecture etc..
So the approach I was wanting to try next was to amend our in-house protocol slightly and include initial HTTP headers so as to make use of the standard Http11Processor etc and then continue (after initial servlet mapping) with the current binary protocol. My question is, is this possible using say a POST.... to then continue comms on the input and output streams using binary?
I have tried to implement this approach but any read I do from the input stream after the request is forwarded to the servlet service method, throws an EOFException, which I haven't quite figured out. I wrote a simple socket client that writes the POST, a host header, and a blank line, I then write 2 int's and a String, but I am unable to read the ints and the String from the input stream in the service method without encountering the EOFException.
Does anybody know what might cause this? I can't quite isolate any code within Tomcat that might be causing this issue.
- Darryl
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RE: Piggybacking HTTP with binary protocol
Posted by Martin Gainty <mg...@hotmail.com>.
Darryl-
you're encountering a content-length restriction
one workaround is to transmit as a MTOM binary attachment
I believe the current hard-limit is 1GB for attachment size
http://wso2.org/library/264
complete guide is available at
http://ws.apache.org/axis2/1_0/mtom-guide.html
HTH
Martin
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> Date: Mon, 8 Sep 2008 06:50:19 -0700
> From: djpentz@yahoo.com
> Subject: Piggybacking HTTP with binary protocol
> To: users@tomcat.apache.org
>
> Last time I mailed the list, I was inquiring about implementing a custom connector or something along those lines to support a binary protocol along with HTTP. This approach proved flawed for various reasons, if not virtually impossible to do with the connector, processor, handler architecture etc..
>
> So the approach I was wanting to try next was to amend our in-house protocol slightly and include initial HTTP headers so as to make use of the standard Http11Processor etc and then continue (after initial servlet mapping) with the current binary protocol. My question is, is this possible using say a POST.... to then continue comms on the input and output streams using binary?
>
> I have tried to implement this approach but any read I do from the input stream after the request is forwarded to the servlet service method, throws an EOFException, which I haven't quite figured out. I wrote a simple socket client that writes the POST, a host header, and a blank line, I then write 2 int's and a String, but I am unable to read the ints and the String from the input stream in the service method without encountering the EOFException.
>
> Does anybody know what might cause this? I can't quite isolate any code within Tomcat that might be causing this issue.
>
> - Darryl
>
>
>
>
> ---------------------------------------------------------------------
> To start a new topic, e-mail: users@tomcat.apache.org
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
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Re: Piggybacking HTTP with binary protocol
Posted by Raymond Kroeker <ra...@raykroeker.com>.
Darryl,
One thing I might suggest is instead of rolling your own http
client; is to use the http client from apache http://hc.apache.org. I
use it myself for various projects including binary data transfer. It
will let you focus on your protocol instead of having to implement
http.
Raymond
On Mon, Sep 8, 2008 at 06:50, Darryl Pentz <dj...@yahoo.com> wrote:
> Last time I mailed the list, I was inquiring about implementing a custom connector or something along those lines to support a binary protocol along with HTTP. This approach proved flawed for various reasons, if not virtually impossible to do with the connector, processor, handler architecture etc..
>
> So the approach I was wanting to try next was to amend our in-house protocol slightly and include initial HTTP headers so as to make use of the standard Http11Processor etc and then continue (after initial servlet mapping) with the current binary protocol. My question is, is this possible using say a POST.... to then continue comms on the input and output streams using binary?
>
> I have tried to implement this approach but any read I do from the input stream after the request is forwarded to the servlet service method, throws an EOFException, which I haven't quite figured out. I wrote a simple socket client that writes the POST, a host header, and a blank line, I then write 2 int's and a String, but I am unable to read the ints and the String from the input stream in the service method without encountering the EOFException.
>
> Does anybody know what might cause this? I can't quite isolate any code within Tomcat that might be causing this issue.
>
> - Darryl
>
>
>
>
> ---------------------------------------------------------------------
> To start a new topic, e-mail: users@tomcat.apache.org
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
--
---------------------------------------------------------
Raymond Kroeker
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