cc3200 tcp server 多次重新连接后不能再连接问题
我用CC3200模块做TCP SERVER时，只有一个TCP客户端反复断开、连接，大概4次以后无法再连接。分析是达到socket连接限制（因为还有其他套接字），但客户端正常断开后 sl_Recv返回0，我在返回0后有关闭套接字，为什么还会出现这种情况呢，请问是什么问题？
while(1)
{
// waiting for an app incoming TCP connection
if ( g_iSockID_App < 0 )
{
// accepts a connection form a TCP client, if there is any
// otherwise returns SL_EAGAIN
g_iSockID_App = sl_Accept(g_iSockID_AppServer, ( struct SlSockAddr_t *)&sAddr, (SlSocklen_t*)&iAddrSize);
if (g_iSockID_App == SL_EAGAIN)
{
//sl_Close(g_iSockID_App);
}
else if(g_iSockID_App < 0)
{
// error
sl_Close(g_iSockID_App);
}
else
{
// setting socket option to make the socket as non blocking
enableOption.NonblockingEnabled = 1; //0 = disabled;1 = enabled;default = 1
lRetVal = sl_SetSockOpt(g_iSockID_App,SL_SOL_SOCKET,SL_SO_NONBLOCKING, (_u8 *)&enableOption,sizeof(enableOption));
//enable/disable nonblocking mode
if( lRetVal < 0 )
{
sl_Close(g_iSockID_App);
}
}
}
else
{
// waits for 1 packets from the connected TCP client
lRetVal = sl_Recv(g_iSockID_App, g_cAppTcpBuf, TCP_CMD_RD_BUF_SIZE, 0);
if (lRetVal == SL_EAGAIN);
else if(lRetVal <=0)
{
// error
sl_Close(g_iSockID_App);
g_iSockID_App=SL_EAGAIN;
//如果客户端正常断开的返回值为0
UART_PRINT("App client failed,lRetVal=%d\n\r",lRetVal);
}
else
{
//run command
}
}
}
请问能否查一下当client端关闭socket, 再连接的时候，你的sl_Accept返回的socket no是不是在递增？
你客户端关闭的时候是怎样关闭的呢？
我将 BsdTcpServer（）函数嵌套在while（1）中，链接PC上网络调试助手TCP client类型，第一次链接成功，断开再次链接，在接受tcp链接函数 sl_Accep报错，这个怎么解决啊！
void TcpServerMultiClient(int usPort)
{
int serverID, socketID[7] = {-1, -1, -1, -1, -1, -1, -1};
long lNonBlocking = 1;
SlSockAddrIn_t sAddr;
SlSockAddrIn_t sLocalAddr;
struct SlTimeval_t timeVal;
int iAddrSize;
int iStatus;
int iNewSockID;
int i, Ret;
char buffer[1024];
sLocalAddr.sin_family = SL_AF_INET;
sLocalAddr.sin_port = sl_Htons((unsigned short)usPort);
sLocalAddr.sin_addr.s_addr = 0;
timeVal.tv_sec = 0;
timeVal.tv_usec = 0;
serverID = sl_Socket(SL_AF_INET,SL_SOCK_STREAM, 0);
if(serverID < 0)
{
printf("Create TCP server socket failed\r\n");
return;
}
iAddrSize = sizeof(SlSockAddrIn_t);
// binding the TCP socket to the TCP server address
iStatus = sl_Bind(serverID, (SlSockAddr_t *)&sLocalAddr, iAddrSize);
if( iStatus < 0 )
{
sl_Close(serverID);
// error
printf("Bind TCP server socket failed\r\n");
return;
}
// putting the socket for listening to the incoming TCP connection
iStatus = sl_Listen(serverID, 0);
if( iStatus < 0 )
{
sl_Close(serverID);
printf("Listen TCP server socket failed\r\n");
return;
}
printf("TCP Server Listening...\n\r");
// setting socket option to make the socket as non blocking
iStatus = sl_SetSockOpt(serverID, SL_SOL_SOCKET, SL_SO_NONBLOCKING,
&lNonBlocking, sizeof(lNonBlocking));
if( iStatus < 0 )
{
printf("set socket TCP server socket failed\r\n");
sl_Close(serverID);
return;
}
sl_SetSockOpt(serverID,SOL_SOCKET,SL_SO_RCVTIMEO, &timeVal, sizeof(timeVal));
//serverID = SL_EAGAIN;
while(1)
{
for(i = 0; i < 7; i ++)
{
if(socketID[i] < 0)
{
if( (socketID[i] = sl_Accept(serverID, ( struct SlSockAddr_t *)&sAddr, (SlSocklen_t*)&iAddrSize)) >= 0)
{
printf("Got a connection, socket id:%d\r\n", socketID[i]);
iStatus = sl_SetSockOpt(socketID[i], SL_SOL_SOCKET, SL_SO_NONBLOCKING,
&lNonBlocking, sizeof(lNonBlocking));
sl_SetSockOpt(socketID[i],SOL_SOCKET,SL_SO_RCVTIMEO, &timeVal, sizeof(timeVal));
}
}
//printf("socket id:%d\r\n", socketID[i]);
if(socketID[i] > 0)
{
//printf("socket id:%d--i:%d\r\n", socketID[i], i);
Ret = sl_Recv(socketID[i], buffer, 1024, 0);
if(Ret > 0)
{
buffer[Ret] = '\0';
printf("Received packets:%s\r\n", buffer);
}
//else
// printf("Returned value:%d\r\n", Ret);
}
}
}
}
我贴了一段代码给你，这是支持多次连接的，你可以参考一下。在你的客户端关闭链接后，请注意要通知你的服务器端关闭套接字。CC3200没有能力知道套接字现在有没有断。