64 lines
1.5 KiB
C
64 lines
1.5 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 22345
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#define SERVADDR "4006:e024:680:c6e:223:8bff:fe59:de90"
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#define BUF_SIZE 1024
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static const char send_data[] = "This is UDP Client from RT-Thread.";
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void udpclient6(void)
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{
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char *recv_data;
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int sockfd;
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struct sockaddr_in6 server_addr6, client_addr6;
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socklen_t clientlen;
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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_DGRAM, 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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if(sendto(sockfd, send_data, sizeof(recv_data), 0, (struct sockaddr *)&server_addr6, sizeof(server_addr6)) < 0)
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{
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rt_kprintf("Sendto error\n");
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rt_free(recv_data);
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return ;
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}
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rt_kprintf("Waiting for a reply...\n");
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clientlen = sizeof(client_addr6);
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if(recvfrom(sockfd, recv_data, BUF_SIZE, 0, (struct sockaddr *)&client_addr6, &clientlen) < 0)
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{
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rt_kprintf("Recvfrom error\n");
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rt_free(recv_data);
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return ;
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}
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rt_kprintf("got '%s'\n", recv_data);
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closesocket(sockfd);
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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(udpclient6, start udp server via ipv6);
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#endif
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