50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
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#include "../basic.h"
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int main(int argc, char **argv) {
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int sockfd;
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struct sockaddr_in servaddr;
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if (argc != 3){
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printf("usage: daytimecli <indirizzoIP> <porta> \n");
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exit(0);
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}
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if( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0 ){
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printf("socket error\n");
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exit(0);
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}
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bzero(&servaddr, sizeof(servaddr));
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servaddr.sin_family = AF_INET;
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servaddr.sin_port = htons(atoi(argv[2])); /* server port */
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if (inet_pton(AF_INET, argv[1], &servaddr.sin_addr) <= 0){
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printf("inet_pton error for %s\n", argv[1]);
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exit(0);
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}
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if (connect(sockfd, (struct sockaddr *) &servaddr, sizeof(servaddr)) < 0){
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printf("connect error\n");
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exit(0);
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}
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char server_address_redeable[INET_ADDRSTRLEN];
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short server_port_redeable;
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struct sockaddr_in server_struct;
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unsigned int server_struct_size = sizeof(server_struct);
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int ridden;
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ridden = read (sockfd, &server_struct,server_struct_size );
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//fprintf(stdout,"Ho letto %d\n bytes",ridden);
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inet_ntop(AF_INET, &(server_struct.sin_addr), server_address_redeable, INET_ADDRSTRLEN);// get ip
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server_port_redeable = ntohs(server_struct.sin_port);// get port
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fprintf (stdout,"%s%c%hu\n",server_address_redeable,':',server_port_redeable);
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exit(0);
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}
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