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| /* Build the socket. */
protoent = getprotobyname("tcp");
if (protoent == NULL) {
perror("getprotobyname");
exit(EXIT_FAILURE);
}
socket_file_descriptor = socket(AF_INET, SOCK_STREAM, protoent->p_proto);
if (socket_file_descriptor == -1) {
perror("socket");
exit(EXIT_FAILURE);
}
/* Build the address. */
hostent = gethostbyname(hostname);
if (hostent == NULL) {
fprintf(stderr, "error: gethostbyname(\"%s\")\n", hostname);
exit(EXIT_FAILURE);
}
in_addr = inet_addr(inet_ntoa(*(struct in_addr*)*(hostent->h_addr_list)));
if (in_addr == (in_addr_t)-1) {
fprintf(stderr, "error: inet_addr(\"%s\")\n", *(hostent->h_addr_list));
exit(EXIT_FAILURE);
}
sockaddr_in.sin_addr.s_addr = in_addr;
sockaddr_in.sin_family = AF_INET;
sockaddr_in.sin_port = htons(server_port);
/* Actually connect. */
if (connect(socket_file_descriptor, (struct sockaddr*)&sockaddr_in, sizeof(sockaddr_in)) == -1) {
perror("connect");
exit(EXIT_FAILURE);
}
/* Send HTTP request. */
nbytes_total = 0;
while (nbytes_total < request_len) {
nbytes_last = write(socket_file_descriptor, request + nbytes_total, request_len - nbytes_total);
if (nbytes_last == -1) {
perror("write");
exit(EXIT_FAILURE);
}
nbytes_total += nbytes_last;
} |
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