求助：TCP SERVER如何同两个CLIENT端口连接？

只看该作者 · 2015-1-4 16:12

请教各位一个问题：
我在开发一个项目，基于STM32F107平台，加载FREERTOS及LWIP协议栈，目前实现了TCP SERVER功能，代码如下：

void TCPServer( void *arg )
{
int optval = 1;
u32_t len;

struct sockaddr_in Server_Local_addr,Client_Remote_addr;

fd_set fdsr;

struct timeval tv;

uint8_t i;

tv.tv_sec = 3;
tv.tv_usec = 0;

(void)arg;

xServerSocket.s = lwip_socket(AF_INET,SOCK_STREAM,0);
if(xServerSocket.s == -1 )
{
return;
}
optval = 1;

lwip_setsockopt(xServerSocket.s,SOL_SOCKET,SO_REUSEADDR,&optval,sizeof(optval));

Server_Local_addr.sin_family = AF_INET;
Server_Local_addr.sin_port = htons(8800);
Server_Local_addr.sin_len = sizeof(Server_Local_addr);
Server_Local_addr.sin_addr.s_addr = INADDR_ANY;

if (lwip_bind(xServerSocket.s, (struct sockaddr *) &Server_Local_addr, sizeof(Server_Local_addr)) < 0)
{
return ;
}

if (lwip_listen(xServerSocket.s, 10) == -1)
{
return;
}

while(1)
{
len = sizeof(Client_Remote_addr);
xServerSocket.c = lwip_accept(xServerSocket.s, (struct sockaddr *)&Client_Remote_addr, &len);

if(xServerSocket.c == -1)
{
lwip_close(xServerSocket.c);
continue;
}

int ret;

while(1)
{
FD_ZERO(&fdsr);
FD_SET(xServerSocket.c, &fdsr);

ret = lwip_select(xServerSocket.c+1, &fdsr, NULL, 0, &tv);

if(ret > 0)
{
if (FD_ISSET(xServerSocket.c, &fdsr))
{
int datalen;

datalen = lwip_recv(xServerSocket.c,ServerRevBuf,NET_BUF_SIZE,0);
if(datalen > 0)
{

//此处处理接收到的数据，省略
........................
}
else
{
lwip_close(xServerSocket.c);
xServerSocket.c = -1;
break;
}
}
}
else if(ret < 0)
{
lwip_close(xServerSocket.c);
xServerSocket.c = -1;
break;
}
}
lwip_close(xServerSocket.c);
xServerSocket.c = -1;
}
// vTaskDelete( NULL );
}

目前的问题是，TCP SERVER的端口8800，需要和测试电脑的两个CLIENT端口（例如：30000、30001）同时建立连接，
进行数据收发，请问如何实现？折腾了好几天，依旧没有结果。:'(