506     std::vector<uint8_t> vSocks5;  in Socks5()  local
507     vSocks5.push_back(SOCKSVersion::SOCKS5); // VER protocol version  in Socks5()
508     vSocks5.push_back(SOCKS5Command::CONNECT); // CMD CONNECT  in Socks5()
509     vSocks5.push_back(0x00); // RSV Reserved must be 0  in Socks5()
510     vSocks5.push_back(SOCKS5Atyp::DOMAINNAME); // ATYP DOMAINNAME  in Socks5()
511     vSocks5.push_back(strDest.size()); // Length<=255 is checked at beginning of function  in Socks5()
512     vSocks5.insert(vSocks5.end(), strDest.begin(), strDest.end());  in Socks5()
513     vSocks5.push_back((port >> 8) & 0xFF);  in Socks5()
514     vSocks5.push_back((port >> 0) & 0xFF);  in Socks5()
515     ret = send(hSocket, (const char*)vSocks5.data(), vSocks5.size(), MSG_NOSIGNAL);  in Socks5()
516     if (ret != (ssize_t)vSocks5.size()) {  in Socks5()