recv_data = udp_s.recvfrom(1024) # 1024为一次接收数据的最大字节 # 因为我们知道了发送/接收到的数据都是地址端口+信息 data, info = recv_data # 拆包 print(f"{info}:{data.decode("gbk")}") # 解码为汉字 udp_s.close() if __name__ == '__main__': main() 1. 2. 3. 4. 5. ...
TCP层根据目的端口和地址将数据存入关联的缓冲区。如果此时应用程序有读操作(例如read或recv),那么数据会从内核态的缓冲区拷贝到用户态的缓存。否则,数据会一直在内核态的缓冲区中。总的来说,TCP的客户端是否可以发送数据与服务端程序是否工作没有任何关系。 当然,如果是整个机器都卡死了,那就是另外一种情况了。这...
void taskTcpServerRecv(void *data){ err_t err; OS_CPU_SR cpu_sr; uint32_t dataCount = 0; newTcpServerDataReceivedSem = OSSemCreate(0); OSEventNameSet(newTcpServerDataReceivedSem,"TcpServerDataReady",(INT8U *)&err); struct netbuf *recvBuff; tcpServerConn = netconn_new(NETCONN_TCP...
) request_body: bytes = clientsocket.recv(2048) request_text: str = request_body.decode(encoding=default_encoding) response_text: str = f'server get message: {request_text}' response_body: bytes = response_text.encode(default_encoding) # time.sleep(1) send_len = send_response( clientsock...
如果TCP连接被对⽅正常关闭，也就是说，对⽅是正确地调⽤了closesocket(s)或者shutdown(s)的话，那么上⾯的Recv或Send调⽤就能马上返回，并且报错。这是由于closesocket(s)或者shutdown(s)有个正常的关闭过程，会告诉对⽅“TCP连接已经关闭，你不需要再发送或者接受消息了”。但是，如果是⽹线突然被...
[Error:0][Recv] by [fd:11]. ---对方tcp连接断开,于是我结束卡死的状态 >>>have 2 events happened. [Success][Accept]by<fd:8>,Client:192.168.1.158:34748, new fd:12. [Success][Recv:200] by [fd:12],Content:###HELLO ... [Success...
OLED_ShowString(90,48,tcp_client_recvbuf,12,1);//显示接收到的数据 OLED_Refresh_Gram();tcp_...
int nRecv = ::recv(clientfd_, buff, 256, 0); if (nRecv == -1) { if (errno == EWOULDBLOCK || errno == EINTR) return true; return false; } //对端关闭了socket else if (nRecv == 0) return false; inputBuffer_.add(buff, (size_t)nRecv); } return true; ...
#1 0x0000aaaaac97faac in MComm::serial_recv_handle (this=0xaaaaada38938 <remoteCtrl>, arg=0xaaaaada38938 <remoteCtrl>) at src/comm.cpp:541 #2 0x0000aaaaac97ed80 in MComm::thread_serial_recv (arg=0xaaaaada38938 <remoteCtrl>) at src/comm.cpp:165 ...