#include #include #include #include #include #include #include #include using namespace boost::asio; using boost::system::error_code; io_service service; size_t read_complete(char * buf, const error_code & err, size_t bytes) { if ( err) return 0; bool found = std::find(buf, buf + bytes, '\n') < buf + bytes; // we read one-by-one until we get to enter, no buffering return found ? 0 : 1; } ip::tcp::endpoint ep( ip::address::from_string("127.0.0.1"), 2001); void sync_echo(std::string msg) { msg += "\n"; ip::tcp::socket sock(service); sock.connect(ep); sock.write_some(buffer(msg)); char buf[1024]; int bytes = read(sock, buffer(buf), boost::bind(read_complete,buf,_1,_2)); std::string copy(buf, bytes - 1); msg = msg.substr(0, msg.size() - 1); std::cout << "server echoed our " << msg << ": " << (copy == msg ? "OK" : "FAIL") << std::endl; sock.close(); } int main(int argc, char* argv[]) { // connect several clients char* messages[] = { "Hello, world!", "this is the test...", "Can you see me?-)", "Boost.Asio is Fun!", 0 }; boost::thread_group threads; for ( char ** message = messages; *message; ++message) { threads.create_thread( boost::bind(sync_echo, *message)); boost::this_thread::sleep( boost::posix_time::millisec(100)); } threads.join_all(); }