The select call will wait $timeleft seconds or until there is data available to be read on the socket, whichever occurs first. This allows you to implement non-blocking I/O.

This raises a good point: you have a number of tcp and udp sockets. Do you need (or want) to operate them at the same time (i.e. multiplex the I/O)? If so, you can either do that with threads or also with select.

Final point... select can also be used to determine if a socket is ready to accept an incoming connection.

In reply to Re^3: Timeout Socket recv on UDP... on windows by pc88mxer
in thread Timeout Socket recv on UDP... on windows by shunyun

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