Method OnConnect

library/cpp/neh/tcp2.cpp:719–744

must be called only from asio thread

                //must be called only from asio thread
                void OnConnect(const TErrorCode& ec, IHandlingContext&) {
                    DBGOUT("TConnect::OnConnect: " << ec.Value());
                    if (Y_UNLIKELY(ec)) {
                        if (ec.Value() == EIO) {
                            //try get more detail error info
                            char buf[1];
                            TErrorCode errConnect;
                            AS_.ReadSome(buf, 1, errConnect);
                            OnErrorCode(errConnect.Value() ? errConnect : ec);
                        } else {
                            OnErrorCode(ec);
                        }
                    } else {
                        try {
                            PrepareSocket(AS_.Native());
                            AtomicSet(State_, Connected);
                            AS_.AsyncPollRead(std::bind(&TConnection::OnCanRead, TConnectionRef(this), _1, _2));
                            if (OutputLock_.TryAcquire()) {
                                SendMessages(true);
                                return;
                            }
                        } catch (...) {
                            OnError(CurrentExceptionMessage());
                        }
                    }
                }

                //must be called only after succes aquiring output
                void SendMessages(bool asioThread) {