[lwip-users] Doubt-Reg

[Bellphin Billu]

Sir,

I configure my program is server and try to establish a connection to single client.initially the communication b/w server and client is good but when you disconnect the port and reconnect it,that time the data communication is not progressed properly.Herewith i attached my TCP server coding.

I humbly ask you to help me.....

int EthConnect()

{

int lSocket;

struct sockaddr_in sLocalAddr;

lSocket = lwip_socket(AF_INET, SOCK_STREAM, 0);

if (lSocket < 0) return;

memset((char *)&sLocalAddr, 0, sizeof(sLocalAddr));

sLocalAddr.sin_family = AF_INET;

sLocalAddr.sin_len = sizeof(sLocalAddr);

sLocalAddr.sin_addr.s_addr = htonl(INADDR_ANY);

sLocalAddr.sin_port = 5000;

if (lwip_bind(lSocket, (struct sockaddr *)&sLocalAddr, sizeof(sLocalAddr)) < 0) {

        lwip_close(lSocket);

        return;

}

if ( lwip_listen(lSocket, 20) != 0 ){

        lwip_close(lSocket);

        return;

}

while (1) {

        int clientfd;

        struct sockaddr_in client_addr;

        int addrlen=sizeof(client_addr);

        char buffer[1024];

        int nbytes;

        clientfd = lwip_accept(lSocket, (struct sockaddr*)&client_addr, (socklen_t)&addrlen);

        if (clientfd>0){

            do{

                nbytes=lwip_recv(clientfd, buffer, sizeof(buffer),0);

                if (nbytes>0) lwip_send(clientfd, buffer, nbytes, 0);

            }  while (nbytes>0);

             lwip_close(clientfd);

          }

    } 

    lwip_close(lSocket);

}

Thanks & Reg 

Bellphin