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Program Server

The document contains C code for a UDP server and client that communicate over a local network. The server listens for a 'gettime' message and responds with the current time every second, while the client sends a message to the server and continuously receives and prints the server's responses. Both components utilize socket programming to establish communication on port 8001.

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foreverbo089
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7 views3 pages

Program Server

The document contains C code for a UDP server and client that communicate over a local network. The server listens for a 'gettime' message and responds with the current time every second, while the client sends a message to the server and continuously receives and prints the server's responses. Both components utilize socket programming to establish communication on port 8001.

Uploaded by

foreverbo089
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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PROGRAM

SERVER

#include<stdio.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<unistd.h>
#include<string.h>
#include<stdlib.h>
#include<time.h>
void main()
{
int sfd,len;
char msg[50];
struct sockaddr_in servaddr;
struct tm *info;
time_t rawtime;
sfd=socket(AF_INET,SOCK_DGRAM,0);
if(sfd<0)
printf("Socket error\n");
else
printf("Socket Success\n");

servaddr.sin_family=AF_INET;
servaddr.sin_port=htons(8001);
servaddr.sin_addr.s_addr=inet_addr("127.0.0.1");
len=sizeof(servaddr);

if(bind(sfd,(struct sockaddr *)&servaddr,sizeof(servaddr))<0)


{
printf("Bind error\n");
exit(0);
}
printf("Bind success\n");

bzero(msg,50);
recvfrom(sfd,msg,sizeof(msg),0,(struct sockaddr *)&servaddr,&len);
if(strncmp("gettime",msg,7)==0)
{
while(1)
{
time(&rawtime);
info=localtime(&rawtime);
strcpy(msg,asctime(info));
sendto(sfd,msg,sizeof(msg),0,(struct sockaddr *)&servaddr,len);
sleep(1);

}
}

CLIENT

#include<stdio.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<unistd.h>
#include<string.h>
#include<stdlib.h>
#include<time.h>
void main()
{
int sfd,len;
char msg[50];
struct sockaddr_in servaddr;
struct tm *info;
time_t rawtime;
sfd=socket(AF_INET,SOCK_DGRAM,0);
if(sfd<0)
printf("Socket error\n");
else
printf("Socket Success\n");

servaddr.sin_family=AF_INET;
servaddr.sin_port=htons(8001);
servaddr.sin_addr.s_addr=inet_addr("127.0.0.1");
len=sizeof(servaddr);

bzero(msg,50);
printf("Msg to Server:");
fgets(msg,sizeof(msg),stdin);
sendto(sfd,msg,sizeof(msg),0,(struct sockaddr *)&servaddr,len);
while(1)
{
recvfrom(sfd,msg,sizeof(msg),0,(struct sockaddr *)&servaddr,&len);
printf("%s",msg);
}
}

OUTPUT

SERVER

CLIENT

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