43 lines
1.1 KiB
C
Executable File
43 lines
1.1 KiB
C
Executable File
#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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#include <string.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 status;
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struct addrinfo sainfo, *psinfo;
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struct hostent *server;
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char buffer[MAXBUF];
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int sock, portno, n;
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struct sockaddr_in6 serv_addr;
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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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portno = atoi(argv[2]);
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server = gethostbyname2(argv[1],AF_INET6);
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memset((char *) &serv_addr, 0, sizeof(serv_addr));
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serv_addr.sin6_flowinfo = 0;
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serv_addr.sin6_family = AF_INET6;
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memmove((char *) &serv_addr.sin6_addr.s6_addr, (char *) server->h_addr, server->h_length);
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serv_addr.sin6_port = htons(portno);
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sprintf(buffer,"Ciao");
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status = sendto(sock, buffer, strlen(buffer), 0, (const struct sockaddr *)&serv_addr, sizeof(serv_addr));
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printf("buffer : %s \t%d\n", buffer, status);
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close(sock);
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return 0;
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} |