46 lines
974 B
C
46 lines
974 B
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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#define MAXBUF 65536
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int main()
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{
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int sock;
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int status;
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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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sock = socket(PF_INET6, SOCK_DGRAM,0);
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sin6len = sizeof(struct sockaddr_in6);
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memset(&sin6, 0, sin6len);
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/* just use the first address returned in the structure */
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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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status = getsockname(sock, (struct sockaddr *)&sin6, &sin6len);
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printf("%d\n", ntohs(sin6.sin6_port));
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status = recvfrom(sock, buffer, MAXBUF, 0,
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(struct sockaddr *)&sin6, &sin6len);
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printf("buffer : %s\n", buffer);
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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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