Parameter implication of listen function in socket __ function

Problem Description:

I would like to ask you prawns, the parameters of the Listen function means:
1, how many customers can link to this service socket
2, through the Connect function to link the service socket, and is in the waiting service socket accept customer Socket number
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Listen the meaning of the parameter should be the latter, is not can even the ф said Nao 苁 ?

Rather, it is the maximum queue length of a connection that is shelved at the same time, because it is entirely possible to have several server connection requests at the same time, so this parameter is very important.

As an example:

For example, the Listen parameter is 2, but at the same time 5 clients make connection requests at the same time, the head and ends are placed in the pending queue in order to serve them, but the latter three connect failed ^_^ and return wsaeconnrefused error.

If this parameter appears illegal, the system is replaced with the nearest legal value, typically set below 10