Erlang network programming TCP and UDP messages v packets

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Consider the following:

  {ok, ListenSocket} = gen_tcp:listen(Port, [binary, {packet, 4}, {reuseaddr, true}, {active, once} ]),
  {ok, AcceptSocket} = gen_tcp:accept(ListenSocket),
  receive
    {tcp, Socket, Bin} ->
      case binary_to_term(Bin) of
        {store, Value} ->
          Uid = kvstore:store(Value),
          send(Socket,Uid);
        {retrieve, Key} ->
          send(Socket,kvstore:retrieve(Key))
      end
  end

(The send fun closes the socket).

• I'm assuming that the EVM takes care reconstructing the n packets that make up the message and not user code?


• In which case is there a risk that a very large message could overflow the socket buffer?


• Are these statements equally true for UDP?

asked 35 secs ago

Myles McDonnell

3,830

Erlang network programming TCP and UDP messages v packets