Mercurial > code
view modules/net/examples/non-blocking-connect.cpp @ 512:0002b8da93dc
Net: rework a lot, going to stabilization soon
author | David Demelier <markand@malikania.fr> |
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date | Mon, 04 Apr 2016 17:34:01 +0200 |
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/* * non-blocking-connect.cpp -- example of non blocking connect * * Options: * - WITH_HOST (string literal), the host to try (default: "malikania.fr") * - WITH_PORT (int), the port to use (default: 80) * - WITH_TIMEOUT (int), number of milliseconds before giving up (default: 3000) * - WITH_SSL (bool), true to test with SSL (default: false) */ #include <iostream> #if !defined(WITH_HOST) # define WITH_HOST "malikania.fr" #endif #if !defined(WITH_PORT) # define WITH_PORT 80 #endif #if !defined(WITH_TIMEOUT) # define WITH_TIMEOUT 3000 #endif #include "elapsed-timer.h" #include "sockets.h" int main() { #if defined(WITH_SSL) net::SocketTls<net::address::Ip> socket; #else net::SocketTcp<net::address::Ip> socket; #endif net::Listener<> listener; net::Condition cond; ElapsedTimer timer; // 1. Set to non-blocking. socket.set(net::option::SockBlockMode(false)); try { std::cout << "Trying to connect to " << WITH_HOST << ":" << WITH_PORT << std::endl; // 2. Initial connection process. socket.connect(net::address::Ip(WITH_HOST, WITH_PORT), &cond); while (cond != net::Condition::None && timer.elapsed() < WITH_TIMEOUT) { listener.remove(socket.handle()); // 2. Now complete by waiting for the appropriate condition. listener.set(socket.handle(), cond); listener.wait(std::chrono::milliseconds(WITH_TIMEOUT - timer.elapsed())); socket.connect(&cond); } } catch (const net::Error &error) { std::cerr << "error: " << error.what() << std::endl; std::exit(1); } std::cout << "Successfully connected!" << std::endl; return 0; }