Dear Sir

I already did some research about this problem. But still be confused.
I want to take advantage of the persistent connection of Http/1.1.

In my experiement, if HTTP/1.1 client connects to the tomcat 4.0.1 Http/1.1
directly, the persistent connection can be established.

However, it is usless because actually all companies employ http proxies.
Furthermore, a lot of them such as the squid is a http/1.0 proxy.

in my application, the client (http/1.1) -----> squid proxy(http/1.0) 
----> tomcat 4.0.1.(Http/1.1)

I found that tomcat 4.0.1 always sends a FIN package after it sends the 
response even
i send the Connection: Keep-Alive in the request header. Also, I know 
the tomcat
does also received "Connection: Keep-Alive" header via proxy.

I did a comparison between tomcat4.0.1 and apache 1.3.9, the results 
show that
if If I add "Connection: Keep-Alive" header in the request, apache 
server will
keep the connection alive even the proxy/client sends a HTTP/1.0 package.

However, It seems that tomcat 4.0.1 doesn't support this feature. I 
think this feature isn't defined
in specification, however, it is so important that it provide the only 
way(am i right?)
 to establish persistent connection in real world which is consisted of 
unexpected HTTP/1.0 proxies.

I don't know whether my understanding is correct or not. Any comments
are welcome.


Thanks a lot.

yangyuexiang







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