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Add support for SOCKS proxies

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This is still raw and experimental.
To connect through a SOCKS proxy, set ZMQ_SOCKS_PROXY socket option on
socket before issuing a connect call, e.g.:

    zmq_setsockopt (s, ZMQ_SOCKS_PROXY,
        "127.0.0.1:22222", strlen ("127.0.0.1:22222"));
    zmq_connect (s, "tcp://127.0.0.1:5555");

Known limitations:
- only SOCKS version 5 supported
- authentication not supported
- new option is still undocumented
This commit is contained in:
Martin Hurton
2014-06-22 10:32:22 +02:00
parent 8b80197207
commit f06ca69ae9
13 changed files with 1176 additions and 119 deletions
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21
src/session_base.cpp
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@@ -25,6 +25,7 @@
#include "tcp_connecter.hpp"
#include "ipc_connecter.hpp"
#include "tipc_connecter.hpp"
#include "socks_connecter.hpp"
#include "pgm_sender.hpp"
#include "pgm_receiver.hpp"
#include "address.hpp"
@@ -497,10 +498,22 @@ void zmq::session_base_t::start_connecting (bool wait_)
// Create the connecter object.
if (addr->protocol == "tcp") {
tcp_connecter_t *connecter = new (std::nothrow) tcp_connecter_t (
io_thread, this, options, addr, wait_);
alloc_assert (connecter);
launch_child (connecter);
if (options.socks_proxy_address != "") {
address_t *proxy_address = new (std::nothrow)
address_t ("tcp", options.socks_proxy_address);
alloc_assert (proxy_address);
socks_connecter_t *connecter =
new (std::nothrow) socks_connecter_t (
io_thread, this, options, addr, proxy_address, wait_);
alloc_assert (connecter);
launch_child (connecter);
}
else {
tcp_connecter_t *connecter = new (std::nothrow)
tcp_connecter_t (io_thread, this, options, addr, wait_);
alloc_assert (connecter);
launch_child (connecter);
}
return;
}