TCP SERVER CLIENT LINUX Network Programming in C Complete Code Function Explanation

Published: 28 June 2020
on channel: LearnEveryone

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262

First, replace by 'Greater than' and 'Smaller than' 'Angle Brackets' then Run the program.
As 'Angle Brackets' are not allowed in the Description.
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#include (Put Less than Angle bracket)stdio.h(Put Greater than Angle Bracket)
#include (Put Less than Angle bracket)stdlib.h(Put Greater than Angle Bracket)
#include (Put Less than Angle bracket)string.h(Put Greater than Angle Bracket)
#include (Put Less than Angle bracket)sys/socket.h(Put Greater than Angle Bracket)
#include (Put Less than Angle bracket)sys/types.h(Put Greater than Angle Bracket)
#include (Put Less than Angle bracket)netinet/in.h(Put Greater than Angle Bracket)
#include (Put Less than Angle bracket)arpa/inet.h(Put Greater than Angle Bracket)

#define PORT 5555

void main()
{
int sockfd;
struct sockaddr_in serverAddr;

int newSocket;
struct sockaddr_in newAddr;

socklen_t addr_size;
char buf[1024];

sockfd=socket(PF_INET,SOCK_STREAM,0);
printf("Server socket Created Successfully...\n");
memset(&serverAddr,'\0',sizeof(serverAddr));

serverAddr.sin_family=AF_INET;
serverAddr.sin_port=htons(PORT);
serverAddr.sin_addr.s_addr=inet_addr("127.0.0.1");

bind(sockfd,(struct sockaddr*)&serverAddr,sizeof(serverAddr));
printf("Bind to Port Number %d\n",4455);

listen(sockfd,6);
printf("Listening...\n");

newSocket=accept(sockfd,(struct sockaddr*)&newAddr,&addr_size);

strcpy(buf,"HELLO FROM ME");
send(newSocket,buf,strlen(buf),0);

printf("Closing Connection...\n");
}
==========================================================================
#include (Put Less than Angle bracket)stdio.h(Put Greater than Angle Bracket)
#include (Put Less than Angle bracket)stdlib.h(Put Greater than Angle Bracket)
#include (Put Less than Angle bracket)string.h(Put Greater than Angle Bracket)
#include (Put Less than Angle bracket)sys/socket.h(Put Greater than Angle Bracket)
#include (Put Less than Angle bracket)sys/types.h(Put Greater than Angle Bracket)
#include (Put Less than Angle bracket)netinet/in.h(Put Greater than Angle Bracket)
#include (Put Less than Angle bracket)arpa/inet.h(Put Greater than Angle Bracket)

#define PORT 5555

void main(){

int clientSocket;
struct sockaddr_in serverAddr;
char buf[1024];

clientSocket=socket(PF_INET,SOCK_STREAM,0);
printf("Client socket Created Successfully...\n");

memset(&serverAddr,'\0',sizeof(serverAddr));
serverAddr.sin_family=AF_INET;
serverAddr.sin_port=htons(PORT);
serverAddr.sin_addr.s_addr=inet_addr("127.0.0.1");

connect(clientSocket,(struct sockaddr*)&serverAddr,sizeof(serverAddr));
printf("Connected to Server Successfully...\n");

recv(clientSocket,buf,1024,0);
printf("Data Received: %s...\n",buf);
printf("Closing Connection...\n");
}

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