Contoh Socket Programming

CONTOH SOCKET PROGRAMMING BAHASA C PADA LINUX

1.     Membuat Socket

#include<stdio.h>     #include<sys/socket.h>           int main(int argc , char *argv[])     {         int socket_desc;         socket_desc = socket(AF_INET , SOCK_STREAM , 0);             if (socket_desc == -1)         {             printf("Could not create socket");             }          return 0;      }

2.     Menyambungkan Socket dengan Server

// IPv4 AF_INET sockets: struct sockaddr_in {     short            sin_family;   // e.g. AF_INET, AF_INET6     unsigned short   sin_port;     // e.g. htons(3490)     struct in_addr   sin_addr;     // see struct in_addr, below     char             sin_zero[8];  // zero this if you want to }; struct in_addr {     unsigned long s_addr;          // load with inet_pton() }; struct sockaddr {     unsigned short    sa_family;    // address family, AF_xxx     char              sa_data[14];  // 14 bytes of protocol address };

#include<stdio.h> #include<sys/socket.h> #include<arpa/inet.h> //inet_addr int main(int argc , char *argv[]) {     int socket_desc;     struct sockaddr_in server;           //Create socket     socket_desc = socket(AF_INET , SOCK_STREAM , 0);     if (socket_desc == -1)     {         printf("Could not create socket");     }               server.sin_addr.s_addr = inet_addr("74.125.235.20");     server.sin_family = AF_INET;     server.sin_port = htons( 80 );     //Connect to remote server     if (connect(socket_desc , (struct sockaddr *)&server , sizeof(server)) < 0)     {         puts("connect error");         return 1;     }           puts("Connected");     return 0; }

3.     Mengirim Data dari Socket

#include<stdio.h> #include<string.h>    //strlen #include<sys/socket.h> #include<arpa/inet.h> //inet_addr int main(int argc , char *argv[]) {     int socket_desc;     struct sockaddr_in server;     char *message;           //Create socket     socket_desc = socket(AF_INET , SOCK_STREAM , 0);     if (socket_desc == -1)     {         printf("Could not create socket");     }               server.sin_addr.s_addr = inet_addr("74.125.235.20");     server.sin_family = AF_INET;     server.sin_port = htons( 80 );     //Connect to remote server     if (connect(socket_desc , (struct sockaddr *)&server , sizeof(server)) < 0)     {         puts("connect error");         return 1;     }           puts("Connected\n");           //Send some data     message = "GET / HTTP/1.1\r\n\r\n";     if( send(socket_desc , message , strlen(message) , 0) < 0)     {         puts("Send failed");         return 1;     }     puts("Data Send\n");           return 0; }

4.     Menerima pesar untuk socket

#include<stdio.h> #include<string.h>    //strlen #include<sys/socket.h> #include<arpa/inet.h> //inet_addr int main(int argc , char *argv[]) {     int socket_desc;     struct sockaddr_in server;     char *message , server_reply[2000];           //Create socket     socket_desc = socket(AF_INET , SOCK_STREAM , 0);     if (socket_desc == -1)     {         printf("Could not create socket");     }               server.sin_addr.s_addr = inet_addr("74.125.235.20");     server.sin_family = AF_INET;     server.sin_port = htons( 80 );     //Connect to remote server     if (connect(socket_desc , (struct sockaddr *)&server , sizeof(server)) < 0)     {         puts("connect error");         return 1;     }           puts("Connected\n");           //Send some data     message = "GET / HTTP/1.1\r\n\r\n";     if( send(socket_desc , message , strlen(message) , 0) < 0)     {         puts("Send failed");         return 1;     }     puts("Data Send\n");           //Receive a reply from the server     if( recv(socket_desc, server_reply , 2000 , 0) < 0)     {         puts("recv failed");     }     puts("Reply received\n");     puts(server_reply);           return 0; }

5.     OUTPUT

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