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Reputation: 1061

Java SocketChannel equivalent in Erlang

Is there an Erlang equivalent of the Java SocketChannel class? Need to be able to handle multiple client socket connections using one Erlang process.

Thanks!

Upvotes: 0

Views: 130

Answers (1)

Scott Lystig Fritchie
Scott Lystig Fritchie

Reputation: 759

The gen_tcp interface allows you to interact quite easily with multiple sockets by a single Erlang process. Use the {active, once} socket option or, if you're feeling lucky, {active, true} socket option. For one/lots of very busy sockets, the latter can risk creating more messages to your Erlang process's mailbox than it can handle, hence {active, once} being the preferred option.

See: http://www.erlang.org/doc/man/inet.html and http://www.erlang.org/doc/man/gen_tcp.html

The option is usually specified in the gen_tcp:listen() or gen_tcp:connect() calls, though you can also change the 'active' mode setting on a socket using inet:setopts().

Upvotes: 3

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