If I'm inside an input connection filter and want to be able to tell one HTTP request from another what should I do? Counting Content-length is ineffective, and a won't work if C-L header is wrong.
I can tell the end of HTTP headers section from the request body, by matching /^[\r\n]$/ while reading HTTP headers. But I see no token that tells me that the body is done. Any filter examples I can look at?
Also, why there is no EOS token in connection level filters? if you had some data buffered how do you know when to flush it?
With Keep-Alive requests I get some IMMORTAL bucket after the last request. Not sure what it is. At the moment just snooping on the traffic.
Answering my own question, the solution is to use conn->keepalives counter which is incremented at the end of each request. By storing the previous count and comparing with the current count one can tell when a new request is coming in over the keepalive connection. This technique is now documented in the mod_perl land:
http://perl.apache.org/docs/2.0/user/handlers/filters.html#Connection_Filters_over_KeepAlive_Connections
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