Ipme - Get your external ip address quickly

#include <stdio.h> #include <string.h> #include <stdlib.h> #include <sys/socket.h> #include <arpa/inet.h> #include <netdb.h> #include <errno.h> #include <fcntl.h> #include <unistd.h> #define IP "" #define BUFFER_REQUEST 100 #define BUFFER_RESPONSE 1000 void print_ip(char *response); int main() { int socket_desc; struct sockaddr_in server; char request[BUFFER_REQUEST]; char response[BUFFER_RESPONSE]; bzero(request, BUFFER_REQUEST); bzero(response, BUFFER_RESPONSE); //create socket socket_desc = socket(AF_INET, SOCK_STREAM, 0); if (socket_desc == -1) { printf("/nError: can\'t create socket.\n\n"); exit(-1); } server.sin_addr.s_addr = inet_addr(IP); server.sin_family = AF_INET; server.sin_port = htons(80); //make request string strcat(request, "GET /ipme/ipme.php"); strcat(request, " HTTP/1.1\r\n"); strcat(request, "Host: "); strcat(request, "www.pirotski.com"); strcat(request, "\r\nConnection: close"); strcat(request, "\r\n\r\n"); //connect to server if(connect(socket_desc , (struct sockaddr *)&server , sizeof(server)) < 0) { printf("\nError: Can\'t connect to server!\n\n"); exit(-1); } //send request if(send(socket_desc, request, strlen(request), 0) < 0) { printf("\nError: Can\'t send request!\n"); exit(-1); } //receive resposne recv(socket_desc, response, BUFFER_RESPONSE, 0); //parse and print ip address print_ip(response); close(socket_desc); } void print_ip(char *response) { char *p1 = strstr(response, "[ip]")+4; int i=-1; while(p1[++i] != '[') printf("%c", p1[i]); printf("\n"); }
It prints your external ip address in console.

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