(Solved): Server: // g++ -o tcpServer tcpServer.cpp // ./tcpServer Server #include <stdio.h> #include & ...
Server:
// g++ -o tcpServer tcpServer.cpp
// ./tcpServer Server
#include <stdio.h>
#include <netdb.h>
#include <netinet/in.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#define MAX 80
#define PORT 54550
#define SA struct sockaddr
// Function designed for chat between client and server.
void openChat(int sockfd, char *name)
{
char buff[MAX], clientName[MAX];
int n;
// infinite loop for chat
for (;;) {
bzero(buff, MAX);
// read the message from client and copy it in buffer
read(sockfd, buff, sizeof(buff));
// print buffer which contains the client contents
printf("From client: %s \n %s: ", buff, name);
bzero(buff, MAX);
n = 0;
// copy server message in the buffer
while ((buff[n++] = getchar()) != '\n')
;
// and send that buffer to client
write(sockfd, buff, sizeof(buff));
printf("Message sent. Waiting for client\n");
// if msg contains "Exit" then server exit and chat ended.
if (strncmp("exit", buff, 4) == 0) {
printf("Server Exit...\n");
break;
}
}
}
// Driver function
int main(int arc, char *argv[])
{
int sockfd, connfd, len;
struct sockaddr_in servaddr, cli;
socklen_t addr_size;
char *name = argv[1];
// socket create and verification
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd == -1) {
printf("socket creation failed...\n");
exit(0);
}
else
printf("Socket successfully created..\n");
bzero(&servaddr, sizeof(servaddr));
// assign IP, PORT
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
servaddr.sin_port = htons(PORT);
// Binding newly created socket to given IP and verification
if ((bind(sockfd, (SA*)&servaddr, sizeof(servaddr))) != 0) {
printf("socket bind failed...\n");
exit(0);
}
else
printf("Socket successfully binded..\n");
// Now server is ready to listen and verification
if ((listen(sockfd, 5)) != 0) {
printf("Listen failed...\n");
exit(0);
}
else
printf("Server listening..\n");
len = sizeof(cli);
// Accept the data packet from client and verification
connfd = accept(sockfd, (SA*)&cli, &addr_size);
if (connfd < 0) {
printf("server acccept failed...\n");
exit(0);
}
else
printf("server acccepted the client...\n");
// Open chat
openChat(connfd, name);
// After chatting close the socket
close(sockfd);
}
Client:
// g++ -o tcpClient tcpClient.cpp
// ./tcpClient Client
#include <netdb.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#define MAX 80
#define PORT 54550
#define SA struct sockaddr
void openChat(int sockfd, char *name)
{
char buff[MAX], serverName[MAX];
int n;
for (;;) {
bzero(buff, sizeof(buff));
printf("%s : ", name);
n = 0;
while ((buff[n++] = getchar()) != '\n')
;
write(sockfd, buff, sizeof(buff));
printf("Message sent. Waiting for server\n");
bzero(buff, sizeof(buff));
read(sockfd, buff, sizeof(buff));
printf("From Server : %s", buff);
if ((strncmp(buff, "exit", 4)) == 0) {
printf("Client Exit...\n");
break;
}
}
}
int main(int arc, char *argv[])
{
int sockfd, connfd;
struct sockaddr_in servaddr, cli;
char *name = argv[1];
// socket create and varification
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd == -1) {
printf("socket creation failed...\n");
exit(0);
}
else
printf("Socket successfully created..\n");
bzero(&servaddr, sizeof(servaddr));
// assign IP, PORT
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr = inet_addr("127.0.0.1");
servaddr.sin_port = htons(PORT);
// Client to server socket connection
if (connect(sockfd, (SA*)&servaddr, sizeof(servaddr)) != 0) {
printf("Could not connect with server...\n");
exit(0);
}
else
printf("connected to the server..\n");
// open chat
openChat(sockfd, name);
// close socket
close(sockfd);
}