default protocol for a service running via xinetd

[goBoating]

Hello All,

I'm trying to write a little code that determines the protocol being used by a given service that is running via xinetd.

I first look in the /etc/xinetd.d/-serviceName- files for an explicitly configured protocol. If not found, I check the main xinetd.conf file.

Frequently, there is no mention of a protocol in either place. So, I thought I'd check the '/etc/services' file. But, that most often lists at least two protocols (tcp and udp) for each service.

The reading I've done says that if the xinetd config files don't specify a protocol, then the default for the service is used.

The ultimate question: how do I determine the default protocol for a given service?



'hope this helps

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[goBoating]

I should clarify, the service may not be running. I guess the question is how does xinetd know what protocol to use for a give service?

If there are both 'udp' and 'tcp' entries in /etc/services, does xinetd use both?



'hope this helps

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[goBoating]

It appears that in most cases, the 'protocol' can be inferred from the 'socket-type'. If the socket-type is stream, protocol will be tcp. If socket-type is dgram, protocol will be udp.


'hope this helps

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