1
我試圖建立一個PIC24F服務器。Microchip TCPIP保持活着不工作
這是一段代碼,我正在isuing:
switch(TCPServerState) {
case SM_HOME:
// Allocate a socket for this server to listen and accept connections on
socket.Socket = TCPOpen(0, TCP_OPEN_SERVER, SERVER_PORT, TCP_PURPOSE_GENERIC_TCP_SERVER);
if(socket.Socket != INVALID_SOCKET) {
TCPServerState = SM_LISTENING;
}
break;
case SM_LISTENING:
// See if anyone is connected to us
//if(TCPIsConnected(socket.Socket)) {
if(!TCPWasReset(socket.Socket)){
if(socket.Connected == 0) {
socket.Connected = 1;
printf("Socket is CONNECTED: %d\n", socket.Socket);
}
uint16_t avaible = TCPIsGetReady(socket.Socket);
// Some stuff
}
else if(socket.Connected == 1){
printf("Socket RESET: %d\n", socket.Socket);
TCPServerState = SM_CLOSING;
}
break;
case SM_CLOSING:
// Close the socket connection.
socket.Connected = 0;
TCPClose(socket.Socket);
TCPServerState = SM_HOME;
printf("Socket is CLOSED: %d\n", socket.Socket);
break;
}
所有工作正常,如果我正確地關閉我的客戶端套接字,但如果我斷開以太網電纜我不能夠檢測到斷線,我的代碼呢不要關閉套接字,因爲TCPWasReset仍然是FALSE(或TCPIsConnected仍然爲TRUE)。
那麼如何檢測網線斷開(無需添加軟件keep_alive實現)?
感謝
可能重複(http://stackoverflow.com/questions/283375/detecting-tcp-client-disconnect) – EJP
不,這是一個微芯片TCPIP協議棧的相關問題。 – blow