Added Client Server Implementation

Simple Client Server/client.c

@@ -0,0 +1,65 @@
+
+// Write CPP code here 
+#include <netdb.h> 
+#include <stdio.h> 
+#include <stdlib.h> 
+#include <string.h> 
+#include <sys/socket.h> 
+#define MAX 80 
+#define PORT 8080 
+#define SA struct sockaddr 
+void func(int sockfd) 
+{ 
+    char buff[MAX]; 
+    int n; 
+    for (;;) { 
+        bzero(buff, sizeof(buff)); 
+        printf("Enter the string : "); 
+        n = 0; 
+        while ((buff[n++] = getchar()) != '\n') 
+            ; 
+        write(sockfd, buff, sizeof(buff)); 
+        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 sockfd, connfd; 
+    struct sockaddr_in servaddr, cli; 
+  
+    // 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); 
+  
+    // connect the client socket to server socket 
+    if (connect(sockfd, (SA*)&servaddr, sizeof(servaddr)) != 0) { 
+        printf("connection with the server failed...\n"); 
+        exit(0); 
+    } 
+    else
+        printf("connected to the server..\n"); 
+  
+    // function for chat 
+    func(sockfd); 
+  
+    // close the socket 
+    close(sockfd); 
+} 

Simple Client Server/server.c

@@ -0,0 +1,94 @@
+
+#include <netdb.h> 
+#include <netinet/in.h> 
+#include <stdlib.h> 
+#include <string.h> 
+#include <sys/socket.h> 
+#include <sys/types.h> 
+#define MAX 80 
+#define PORT 8080 
+#define SA struct sockaddr 
+  
+// Function designed for chat between client and server. 
+void func(int sockfd) 
+{ 
+    char buff[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\t To client : ", buff); 
+        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)); 
+  
+        // 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 sockfd, connfd, len; 
+    struct sockaddr_in servaddr, cli; 
+  
+    // 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, &len); 
+    if (connfd < 0) { 
+        printf("server acccept failed...\n"); 
+        exit(0); 
+    } 
+    else
+        printf("server acccept the client...\n"); 
+  
+    // Function for chatting between client and server 
+    func(connfd); 
+  
+    // After chatting close the socket 
+    close(sockfd); 
+}