79 lines
1.7 KiB
C
79 lines
1.7 KiB
C
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#include <rtthread.h>
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#include <lwip/netdb.h>
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#include <lwip/sockets.h>
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#define SERV_PORT 12345
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#define SERVADDR "4006:e024:680:c6e:223:8bff:fe59:de90" // Do not use link-local address, lwip-head did not implement it.
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#define BUF_SIZE 1024
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static const char send_data[] = "This is TCP Client from RT-Thread.";
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void tcpclient6(void)
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{
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char* recv_data;
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int sockfd, bytes_received;
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struct sockaddr_in6 server_addr6;
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int status = 0;
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recv_data = rt_malloc(BUF_SIZE);
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if(recv_data == RT_NULL)
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{
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rt_kprintf("No memory\n");
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return ;
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}
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if((sockfd = socket(PF_INET6, SOCK_STREAM, 0)) == -1)
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{
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rt_kprintf("Socket error\n");
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rt_free(recv_data);
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return ;
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}
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memset(&server_addr6, 0, sizeof(server_addr6));
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server_addr6.sin6_family = AF_INET6;
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server_addr6.sin6_port = htons(SERV_PORT);
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if(inet_pton(AF_INET6, SERVADDR, &server_addr6.sin6_addr.s6_addr) != 1)
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{
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rt_kprintf("inet_pton() error\n");
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rt_free(recv_data);
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return ;
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}
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status = connect(sockfd, (struct sockaddr *)&server_addr6, sizeof(server_addr6));
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if(status < 0)
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{
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rt_kprintf("Connect error:%d\n", status);
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rt_free(recv_data);
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return ;
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}
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while(1)
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{
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bytes_received = recv(sockfd, recv_data, BUF_SIZE -1, 0);
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if(bytes_received <= 0)
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{
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closesocket(sockfd);
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rt_free(recv_data);
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break;
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}
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recv_data[bytes_received] = '\0';
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if(strcmp(recv_data, "q") == 0 || strcmp(recv_data, "Q") == 0)
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{
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closesocket(sockfd);
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rt_free(recv_data);
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break;
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}
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else
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{
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rt_kprintf("\nReceived data = %s ", recv_data);
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}
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send(sockfd, send_data, strlen(send_data), 0);
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}
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return;
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}
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#ifdef RT_USING_FINSH
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#include <finsh.h>
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FINSH_FUNCTION_EXPORT(tcpclient6, startup tcp client via ipv6);
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#endif
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