I am using boost::beast library for both WebSocket and TCP server.
Because of requirement, I have to use same port. Thus I implemented server following it.
void on_run() {
// Set suggested timeout settings for the websocket
m_ws.set_option(...);
m_ws.async_accept(
beast::bind_front_handler(
&WsSessionNoSSL::on_accept,
shared_from_this()));
}
virtual void on_accept(beast::error_code ec) {
if(ec) {
std::string msg = ec.message();
CONSOLE_INFO("err: {}", msg);
if(msg != "bad method") {
return fail(ec, "accept");
} else {
doReadTcp();
return;
}
}
doReadWs();
}
void doReadTcp() {
m_ws.next_layer().async_read_some(boost::asio::buffer(m_recvData, 15),
[this, self = shared_from_this()](const boost::system::error_code &error,
size_t bytes_transferred) {
if(error) {
return fail(error, "tcp read fail");
}
CONSOLE_INFO("recvs: {}", bytes_transferred);
doReadTcp();
});
}
void doReadWs() {
m_ws.async_read(...);
}
After accept function is failed, I try to read raw tcp data, however I wasn't able to know passed data. I can only know failure reason via ec.message(). When accept function is failed, can I know passed data?
If It is impossible what I thought, how to solve this problem?
I found solution.
m_ws.async_accept(net::buffer(m_untilStr),
beast::bind_front_handler(
&WsSessionNoSSL::on_accept,
shared_from_this()));
websocket::stream supports buffered accept function.
Thus firstly tcp socket fill handshake data, call the async_accept(buffer, handler).