63 lines
1.1 KiB
C
63 lines
1.1 KiB
C
#include <stdio.h>
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#include <errno.h>
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#include <stdlib.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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unsigned int ip2int(const char *s)
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{
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int ip[4];
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sscanf(s, "%d.%d.%d.%d", ip, ip + 1, ip + 2, ip + 3);
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return ip[0] << 24 | ip[1] << 16 | ip[2] << 8 | ip[3];
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}
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int sendall(int s, char *buf, int len, int flags)
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{
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int total = 0;
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int n;
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while (total < len) {
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n = send(s, buf + total, len - total, flags);
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if (n == -1) {
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break;
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}
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total += n;
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}
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return (n == -1 ? -1 : total);
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}
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char message[] = "Hello there!\n";
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char buf[sizeof(message)];
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int main()
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{
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int sock;
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struct sockaddr_in addr;
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sock = socket(AF_INET, SOCK_STREAM, 0);
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if (sock < 0) {
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perror("socket");
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exit(1);
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}
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addr.sin_family = AF_INET;
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addr.sin_port = htons(3425); // или любой другой порт...
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addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); // (ip2int("192.168.2.1"));
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if (connect(sock, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
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perror("connect");
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exit(2);
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}
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send(sock, message, sizeof(message), 0);
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recv(sock, buf, sizeof(message), 0);
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printf("%s\n", buf);
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close(sock);
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return 0;
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}
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