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#include <rtthread.h>
#include <lwip/sockets.h>
#define SERV_PORT 10001
#define BUF_SIZE 1024
#define BACKLOG 5
static const char send_data[] = "This is TCP Server from RT-Thread.";
void tcpserver6(void)
{
int sockfd, clientfd;
struct sockaddr_in6 server_addr6, client_addr6;
int bytes_received;
char *recv_data;
rt_uint32_t sin_size;
rt_bool_t stop = RT_FALSE;
recv_data = rt_malloc(BUF_SIZE);
if(recv_data == RT_NULL)
{
rt_kprintf("No memory\n");
return ;
}
if((sockfd = socket(PF_INET6, SOCK_STREAM, 0)) == -1)
{
rt_kprintf("Socket error\n");
rt_free(recv_data);
return ;
}
server_addr6.sin6_family = AF_INET6;
memcpy(server_addr6.sin6_addr.s6_addr, IP6_ADDR_ANY, 16);
server_addr6.sin6_port = htons(SERV_PORT);
if(bind(sockfd, (struct sockaddr *)&server_addr6, sizeof(struct sockaddr)) == -1)
{
rt_kprintf("Bind error\n");
rt_free(recv_data);
return ;
}
if(listen(sockfd, BACKLOG) == -1)
{
rt_kprintf("Listen error\n");
rt_free(recv_data);
return ;
}
rt_sprintf(recv_data, "%4d", SERV_PORT);
rt_kprintf("\nTCPServer Waiting for client on port %s...\n", recv_data);
while(stop != RT_TRUE)
{
sin_size = sizeof(struct sockaddr_in6);
clientfd = accept(sockfd, (struct sockaddr *)&client_addr6, &sin_size);
rt_kprintf("I got a connection from (IP:%s, PORT:%d\n)", inet6_ntoa(client_addr6.sin6_addr), ntohs(client_addr6.sin6_port));
while(1)
{
send(clientfd, send_data, strlen(send_data), 0);
bytes_received = recv(clientfd, recv_data, BUF_SIZE, 0);
if(bytes_received <= 0)
{
closesocket(clientfd);
break;
}
recv_data[bytes_received] = '\0';
if(strcmp(recv_data, "q") == 0 || strcmp(recv_data, "Q") == 0)
{
closesocket(clientfd);
break;
}
else if(strcmp(recv_data, "exit") == 0)
{
closesocket(clientfd);
stop = RT_TRUE;
break;
}
else
{
rt_kprintf("RECEIVED DATA = %s\n", recv_data);
}
}
}
closesocket(sockfd);
rt_free(recv_data);
return ;
}
#ifdef RT_USING_FINSH
#include <finsh.h>
FINSH_FUNCTION_EXPORT(tcpserver6, start tcp server via ipv6 );
#endif
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