netkeyboard/server.c

#include <sys/types.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include<unistd.h>
#include<stdlib.h>
#include<stdio.h>
#include<arpa/inet.h>
void error(const char *msg){
   perror(msg);
   exit(1);
}

int main(int argc,char *argv[]){
   int my_socket;
   my_socket=socket(AF_INET,SOCK_DGRAM,0);
   if(my_socket<0){
      error("mysocket");
   }
   /*создали сокет сервера*/
   struct sockaddr_in socket_addr;
   socket_addr.sin_family=AF_INET;
   socket_addr.sin_port=htons(12345);
   socket_addr.sin_addr.s_addr=htons(INADDR_ANY);
   /*заполнили структуру адреса*/
   if(bind(my_socket,(struct sockaddr*)&socket_addr,sizeof(socket_addr))<0){
      error("bind");
   }
   struct sockaddr klient_addr;
   socklen_t size=(socklen_t)sizeof(klient_addr);
   char *buf=malloc(1*sizeof(char));
   while(*buf!='\n'){
   recvfrom(my_socket,buf,6,0,&klient_addr,&size);
   sendto(my_socket,"complete",8,0,&klient_addr,size);
   printf("%c\n",*buf);
   }
}