73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netdb.h>
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#include <stdlib.h>
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#include <arpa/inet.h>
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#define MAXBUF 65536
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int main(int argc, char* argv[])
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{
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int sock;
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int status;
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struct addrinfo sainfo, *psinfo;
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struct sockaddr_in6 sin6;
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int sin6len;
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char buffer[MAXBUF];
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sin6len = sizeof(struct sockaddr_in6);
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if(argc < 2)
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printf("Specify a port number\n"), exit(1);
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sock = socket(PF_INET6, SOCK_DGRAM,0);
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memset(&sin6, 0, sizeof(struct sockaddr_in6));
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sin6.sin6_port = htons(0);
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sin6.sin6_family = AF_INET6;
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sin6.sin6_addr = in6addr_any;
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status = bind(sock, (struct sockaddr *)&sin6, sin6len);
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if(-1 == status)
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perror("bind"), exit(1);
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memset(&sainfo, 0, sizeof(struct addrinfo));
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memset(&sin6, 0, sin6len);
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sainfo.ai_flags = 0;
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sainfo.ai_family = PF_INET6;
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sainfo.ai_socktype = SOCK_DGRAM;
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sainfo.ai_protocol = IPPROTO_UDP;
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status = getaddrinfo("ip6-localhost", argv[1], &sainfo, &psinfo);
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switch (status)
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{
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case EAI_FAMILY: printf("family\n");
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break;
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case EAI_SOCKTYPE: printf("stype\n");
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break;
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case EAI_BADFLAGS: printf("flag\n");
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break;
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case EAI_NONAME: printf("noname\n");
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break;
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case EAI_SERVICE: printf("service\n");
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break;
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}
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sprintf(buffer,"Ciao");
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status = sendto(sock, buffer, strlen(buffer), 0,
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(struct sockaddr *)psinfo->ai_addr, sin6len);
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printf("buffer : %s \t%d\n", buffer, status);
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// free memory
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freeaddrinfo(psinfo);
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psinfo = NULL;
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shutdown(sock, 2);
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close(sock);
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return 0;
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}
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