c - Configuring multiple UDP sockets on a single port -

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i'm trying implement peer-to-peer chat application using udp , wondering how scale program multiple users.

as understand it, udp needs 1 socket send , receive data using recvfrom , sendto functions. using data address fields passed these functions, can determine user i'm communicating with.

i wondering if create multiple udp sockets on same port each peer i'm talking to. way, if data comes peer x, data goes udp port , gets passed appropriate socket 'bound' x's address.

is there anyway while still using udp?

yes, can specify so_reuseaddr (so_reuseport on linux) before binding udp socket (all sockets including first), , connect each socket appropriate target, it's not necessary. dispatch each message arriving on single socket according source-address.


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