Simple Serve-Client programme in C(AF_UNIX)

SIMPLE SERVER

 Source Code:=https://github.com/shouvik126/networking-simple-server-client-

//programme for simple server
#include<stdio.h>
#include<string.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<unistd.h>
#include<sys/un.h>
void main()
{
 int server_sockid, client_sockid;//to store socket descriptor for server and client
 int server_len,client_len;       //to store client amd server structure size
 char out_buf[100],in_buf[100];   //to store the sent and recieve message
 struct sockaddr_un server_address;//structure variable for server
 struct sockaddr_un client_address;//structure variable for client

 unlink("server_socket");          //deleate the name from the file system
       //means the name or process which  last
       //link to the file"server_socket" and ensure 
       //that no other process also opened that file
       //then the space used by that name or process
       //is deleated 
 server_sockid=socket(AF_UNIX, SOCK_STREAM, 0);//socket descripter for server
 server_address.sun_family=AF_UNIX;            //define the family EX-AF_UNIX(for local communication),AF_INET(ipv4)
 strcpy(server_address.sun_path,"server_socket");//assign "server_socket" file to current socket descriptor
 server_len=sizeof(server_address);              //size of the structure sockaddr_un
 bind(server_sockid,(struct sockaddr *)&server_address,server_len);//bind the server socket with the family
           //and path defined above
 
 listen(server_sockid,5);                        //server goes to listen mode and wait for client
 client_len=sizeof(client_address);              //size of the structure sockaddr_un
 client_sockid=accept(server_sockid, (struct sockaddr *)&client_address, &client_len);//connection established
                //store the client descriptor at 
                //'client_sockid'
 strcpy(out_buf, "A text message from server to client");//store message at'out_buf' for sending to client
 send(client_sockid, out_buf, (strlen(out_buf)+1), 0);   //message is sent to client descriptor through 'out_buf'
        //and length is increase by 1 because to explicitely assign null 
        //at the end of the stream
 recv(client_sockid,in_buf,sizeof(in_buf),0);            //recieving message from client socket descriptor through 'in_buf'
 printf("Recieved from client----data=%s\n",in_buf);     //printing message

 close(server_sockid);//closing 2 descriptor
 close(client_sockid);
}

Screenshot:= 

SIMPLE CLENT 

 Source code:=https://github.com/shouvik126/networking-simple-server-client-

//programme for simple client
#include<stdio.h>
#include<string.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<unistd.h>
#include<sys/un.h>
void main()
{
 int client_sockid;//to store socket descriptor for client
 int client_len;    //to store client amd server structure size
 char out_buf[100],in_buf[100];//to store the sent and recieve message


 struct sockaddr_un client_address;//structure variable for client
 client_sockid=socket(AF_UNIX,SOCK_STREAM,0);//client descripter for client
 client_address.sun_family=AF_UNIX; //define the family EX-AF_UNIX(for local communication),AF_INET(ipv4)
 strcpy(client_address.sun_path,"server_socket");//assign "server_socket" file to current socket descriptor
 client_len=sizeof(client_address);//size of the structure sockaddr_un

 connect(client_sockid,(struct sockaddr *)&client_address,client_len);//connect to the server which is 
              //in listen mode
 recv(client_sockid,in_buf,sizeof(in_buf),0);          //recieve message from server through client socket
             //in 'in_buf'
 printf("recieve from server data......'%s'\n",in_buf);//printing recieved message
 strcpy(out_buf,"text message from client to server....");//store message at'out_buf' for sending to servr
 send(client_sockid,out_buf,(strlen(out_buf)+1),0);//message is sent to server descriptor through 'out_buf'
                                                          //and length is increase by 1 because to explicitely assign null 
                                                          //at the end of the stream
                                                                 
 close(client_sockid);//close client socket descriptor
}

Screenshot:= 

*Defination of all function and structure is defined in UDP portion

https://letstartprogramme.blogspot.in/2018/05/udp-server-programme-for-udp.html