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In most cases it is better to just use HTTP, as sooner or later there will be a firewall you need to cross. Most OSs allow the HTTP address space to be divided up between processes.


Yes, IANA maintains the official service and port number registry. The process for getting a port number assigned to you is documented in RFC 6335. A review process is required for any port assignment, but it is much stricter for ports < 1024; such assignments require (among other things) that your protocol is documented in an RFC. (Note that this ...

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