I'm writing a server preforking using Net::Server. I use the socketpair communication to talk to the parent server when needed. So every child uses IO::Select on two handles, the socket to the client, and the socket to the parent.

Now, my problem is that the client protocol is in XML, parsed with XML::Parser, and I'm having problems to decide when to parse it. People suggested using a stream parser, but if I understood correctly, that would mean passing the client socket to the parser, which would make the parser block on it. Unless I'm missing something, this would leave me unable to use parent/child communication.

I've thought of separating requests in different ways, like length-data packets, separating XML with \0 or something else, making all XML go inside <data></data> which would be extracted with a regexp... but all those are pretty ugly and would make debugging harder than it could be.

I'm pretty sure there's got to be some way of doing stream parsing without having to throw out the parent/child communication.

Could anybody help me with this?

Thanks

In reply to How to parse XML coming from a socket? by vadim_t

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