99     ssize_t nBytes = -1;  in recvfrom()  local
102     if ((nBytes = ::recvfrom(sid, (void*)msg.data(), msg.size(), flags, srcAddr, addrlen)) > 0) {  in recvfrom()
105             nBytes = 0;  in recvfrom()
108             msg.resize(nBytes);  in recvfrom()
109             dataCb->onReceive(msg.data(), nBytes);  in recvfrom()
115             for (size_t msgLenReceived = 0; (msgLenReceived < msgLen) && (nBytes > 0);  in recvfrom()
116                  msgLenReceived += nBytes) {  in recvfrom()
117                 nBytes = ::recvfrom(sid, &(msg[msgLenReceived]), msg.size() - msgLenReceived,  in recvfrom()
120             if (nBytes > 0) {  in recvfrom()
121                 nBytes = msgLen;  in recvfrom()
122                 dataCb->onReceive(msg.data(), nBytes);  in recvfrom()
127     return nBytes;  in recvfrom()