I would like to know if socket.recvfrom in python is a blocking function ? I couldn't find my answer in the documentation If it isn't, what will be return if nothing is receive ? An empty string '' ? In the other case, if in fact, it is blocking, how can i do to put it as an unblocking function ? I heard about settimeout but I don't know if it is actually the right solution.
By default it is blocking. It can be turned into non-blocking via socket.setblocking(0)
or (equivalently) socket.settimeout(0)
. In that case if there is nothing to receive it will throw socket.error
exception. See the docs: https://docs.python.org/2/library/socket.html#socket.socket.setblocking
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