Multi-Process Concurrent server

Data.h

1 #ifndef data_h2 #defineData_h3#include <stdio.h>4#include <string.h>5#include <sys/types.h>6#include <sys/stat.h>7#include <sys/socket.h>8#include <stdlib.h>9#include <unistd.h>Ten#include <netinet/inch.h> One#include <arpa/inet.h> A#include <netdb.h> -#include <errno.h> - #definePORT 45178 the #defineMAXN 1100 - #defineBACKLOG 10 - #defineIP "127.0.0.1" - #endif

Server.c

#include"data.h"voidSend_message (intSOCKFD,structsockaddr_in Client) {    intnum; CharSENDBUF[MAXN],RECVBUF[MAXN]; CharCLINAME[MAXN]; printf ("You get a connection from%s \ n", Inet_ntoa (CLIENT.SIN_ADDR)); Num= Recv (SOCKFD,CLINAME,MAXN,0); printf ("client name is%s\n", Cliname);  while(num = recv (SOCKFD,RECVBUF,MAXN,0) ) {num--; Recvbuf[num]=' /'; printf ("Receive A message is%s from <===>%s\n", Recvbuf,cliname); Send (SOCKFD,RECVBUF,MAXN,0); }        }intMain () {intSOCKFD; structsockaddr_in server_in; if(SOCKFD = socket (Af_inet,sock_stream,0)) == -1) {fprintf (stderr,"Socket Fail,error%s", Strerror (errno)); return-1; } bzero (&server_in,sizeof(server_in)); Server_in.sin_family=af_inet; Server_in.sin_port=htons (PORT); Inet_pton (Af_inet,ip,&server_in.sin_addr); if(Bind (SOCKFD, (structsockaddr*) &server_in,sizeof(server_in)) == -1) {fprintf (stderr,"bind Fail,error%s", Strerror (errno)); return-1;    } listen (Sockfd,backlog); structsockaddr_in Client; intLen =sizeof(client); intAfD; intpid;  while(1)    {        if(AfD = Accept (SOCKFD, (structsockaddr*) (&client,&len)) = =-1) {fprintf (stderr,"Accept fail,error:%s\n", Strerror (errno)); Exit (1); }        if(PID = fork ()) >0) {close (AfD); Continue; }        Else if(PID = =0) {close (SOCKFD);            Send_message (afd,client); Exit (0); }        Else{printf ("fork () error!\n"); Exit (0); }} close (SOCKFD);}

Client.c

#include"data.h"voidSend_message (FILE *FP,intsockfd) {    CharSENDLINE[MAXN]; CharRECVBUF[MAXN]; intnum; printf ("Connect to server!\n"); printf ("Please input client name: \ n"); if(Fgets (SENDLINE,MAXN,FP) = =NULL) {printf ("Input name error!\n"); Exit (1); } Send (SOCKFD,SENDLINE,MAXN,0);  while(1) {printf ("Please input message!\n"); if(Fgets (SENDLINE,MAXN,FP) = = NULL) Break; Send (Sockfd,sendline,strlen (sendline),0); Bzero (&recvbuf,sizeof(RECVBUF)); Recv (SOCKFD,RECVBUF,MAXN,0); intLen =strlen (RECVBUF); Recvbuf[len]=' /'; printf ("client Receive message is%s\n", RECVBUF); } printf ("Client exit!\n");}intMain () {structsockaddr_in client_in; intSOCKFD; if(SOCKFD = socket (Af_inet,sock_stream,0)) == -1) {fprintf (stderr,"Socket Fail,error%s\n", Strerror (errno)); return-1; } bzero (&client_in,sizeof(client_in)); Client_in.sin_family=af_inet; Client_in.sin_port=htons (PORT); Inet_pton (Af_inet,ip,&client_in.sin_addr); Connect (SOCKFD, (structsockaddr*) &client_in,sizeof(client_in));    Send_message (STDIN,SOCKFD);    Close (SOCKFD); return 0;}

Multi-Process Concurrent server