Thread: socket programming support multiple ports

Hello friends;

I want to put my socket programming example of how it can support multiple ports.
I want to make the process more requests from distributing particles to create non-blocking structure

ports support ports defined variable.

Code:

#include "stdio.h"
#include "stdlib.h"
#include "unistd.h"
#include "errno.h"
#include "string.h"
#include "sys/socket.h"
#include "netinet/in.h"
#include "arpa/inet.h"
#include "sys/types.h"


#define BUFFSIZE 1024
#define SOCKET_ERROR -1


int listenfd = 0;
int connection = 0;
int ports[] = { 9000,9001,9002,9003,9004,9005 };


struct sockaddr_in httpd;


char sendBuff[BUFFSIZE];
char fromBuff[BUFFSIZE];


void syslog(int type,char * msg)
{
    // sistem hata(sı) ve bilgi mesajları
    switch(type) 
    {
        case 1 : printf("Failed to listen (%s)\n",msg);
        case 2 : printf("There are a new user connection (%s)\n",msg);
    }
}


int main()
{
    listenfd = socket(AF_INET,SOCK_STREAM,0);
    
    memset(&httpd,'0',sizeof(httpd));
    memset(sendBuff,'0',sizeof(sendBuff));


    // socket ayarlarımızı yapıyoruz
    httpd.sin_family = AF_INET;
    httpd.sin_addr.s_addr = htonl(INADDR_ANY);
    httpd.sin_port = htons(ports[1]); 


    bind(listenfd,(struct sockaddr*)&httpd,sizeof(httpd));


    // bağlantı durumunu kontrol ediyoruz.
    if(listen(listenfd,10) == SOCKET_ERROR)
    {
        syslog(1,NULL);
    }


    while(1)
    {
        connection = accept(listenfd,(struct sockaddr*)NULL,NULL);


        // HTTP başlıklarını yazıyoruz
        const char * header =
        (
            "HTTP/1.0 200 OK\n"
            "Content-Type: text/html; charset=utf-8\n\n"
            "Hello World"
        );


        // HTTP başlıklarını ve html verilerini gönderiyoruz
        strcpy(sendBuff,header);
        write(connection,sendBuff,strlen(sendBuff));


        // HTTP üzerinden gelen başlıkları ve verileri alıyoruz
        read(connection,fromBuff,sizeof(fromBuff));
        puts(fromBuff);


        // uyku moduna geçiriyoruz
        shutdown(connection,SHUT_RDWR);
        close(connection);
    }


    return 0;
}

Originally Posted by jim mcnamara

Code:

#include "stdio.h"
// should be
#include <stdio.h>

actually, it will work exactly as written. using <> searches only the configured include paths for the file, while "" searches all of those paths, and the current directory.