boost asio unix socket reuse

Question

I want to use "each io_service per worker thread" design in my program. But I cant reuse unix socket:

io_service io_1;
io_service io_2;
::unlink("/tmp/test");
stream_protocol::endpoint ep("/tmp/test");
stream_protocol::acceptor acceptor_1(io_1, ep, true);
stream_protocol::acceptor acceptor_2(io_2, ep, true);
io_1.run();
io_2.run();

fails with "address already in use". When I open my asio/basic_socket_acceptor.hpp (boost 1.46.1) I see description to acceptor's constructor:

This constructor creates an acceptor and automatically opens it to listen for new connections on the specified endpoint.

@param reuse_addr whether the constructor should set the socket option socket_base::reuse_address.

basic_socket_acceptor(boost::asio::io_service& io_service, 
    const endpoint_type& endpoint, bool reuse_addr = true)

This a boost asio bug and I should send it to the bugtracker, am I right?

Artyom Artyom · Accepted Answer · 2012-02-12T13:31:39

Because you should use 1 acceptor on one of the threads. Instead you created two acceptors.

So you need to run 1 acceptor and spread different connection sessions on different io_services.

Note:

io_1.run();
io_2.run();

Does not run any thread...

Re-Read the examples and try to understand them

boost asio unix socket reuse

1 Answers