add pthread

install/usr/share/swarmlab.io/sec/project/courses/sockets/c/client.c

@@ -0,0 +1,71 @@
+#include <stdio.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <arpa/inet.h>
+
+
+
+#define MAX 80
+#define PORT 3033
+#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);
+}
+

install/usr/share/swarmlab.io/sec/project/courses/sockets/c/make-client

@@ -0,0 +1,2 @@
+
+ gcc -pthread ./client.c -o client ;

install/usr/share/swarmlab.io/sec/project/courses/sockets/c/make-server

@@ -0,0 +1,2 @@
+
+ gcc -pthread ./server.c -o server ;

install/usr/share/swarmlab.io/sec/project/courses/sockets/c/server.c

@@ -0,0 +1,99 @@
+#include <stdio.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+
+
+
+#define MAX 80
+#define PORT 3033
+#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);
+}
+