rtt-f030/net/apps/tcpserver.c

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#include <rtthread.h>
#include <lwip/sockets.h>
static const char send_data[] = "This is TCP Server from RT-Thread.";
void tcpserv(void* parameter)
{
char *recv_data;
rt_uint32_t sin_size;
int sock, connected, bytes_received;
struct sockaddr_in server_addr, client_addr;
rt_bool_t stop = RT_FALSE;
recv_data = rt_malloc(1024);
if (recv_data == RT_NULL)
{
rt_kprintf("No memory\n");
return;
}
/* create a socket */
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
rt_kprintf("Socket error\n");
/* release recv buffer */
rt_free(recv_data);
return;
}
/* init server address */
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(5000);
server_addr.sin_addr.s_addr = INADDR_ANY;
rt_memset(&(server_addr.sin_zero),8, sizeof(server_addr.sin_zero));
/* bind socket */
if (bind(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1)
{
rt_kprintf("Unable to bind\n");
/* release recv buffer */
rt_free(recv_data);
return;
}
/* listen socket */
if (listen(sock, 5) == -1)
{
rt_kprintf("Listen error\n");
/* release recv buffer */
rt_free(recv_data);
return;
}
rt_kprintf("\nTCPServer Waiting for client on port 5000...\n");
while(stop != RT_TRUE)
{
sin_size = sizeof(struct sockaddr_in);
/* accept a client socket */
connected = accept(sock, (struct sockaddr *)&client_addr, &sin_size);
rt_kprintf("I got a connection from (%s , %d)\n",
inet_ntoa(client_addr.sin_addr),ntohs(client_addr.sin_port));
while (1)
{
send(connected, send_data, strlen(send_data), 0);
bytes_received = recv(connected,recv_data, 1024, 0);
if (bytes_received < 0)
{
/* close socket */
lwip_close(connected);
break;
}
recv_data[bytes_received] = '\0';
if (strcmp(recv_data , "q") == 0 || strcmp(recv_data , "Q") == 0)
{
lwip_close(connected);
break;
}
else if (strcmp(recv_data, "exit") == 0)
{
lwip_close(connected);
stop = RT_TRUE;
break;
}
else
{
rt_kprintf("RECIEVED DATA = %s \n" , recv_data);
}
}
}
lwip_close(sock);
/* release recv buffer */
rt_free(recv_data);
return ;
}
#ifdef RT_USING_FINSH
#include <finsh.h>
FINSH_FUNCTION_EXPORT(tcpserv, startup tcp server);
#endif