menangen/client.c

## client.c
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <sys/socket.h>
#include <unistd.h>
#include <arpa/inet.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);
}

## http-server.c
#include <stdio.h>
#include <netdb.h>
#include <netinet/in.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>

#include <sys/socket.h>
#include <unistd.h>

#define MAX 255
#define PORT 8080

typedef struct sockaddr_in socketAddress;
typedef struct sockaddr*   socketInfo;
typedef socklen_t socketSize;

#define ACCEPT(s, client)      accept(s, (socketInfo)&client, &client_size)
#define SERVER_BIND(s, server) bind  (s, (socketInfo)&server, server_size)

#define SRV_FAMILY(server, to)    (server.sin_family = to)
#define SRV_ADDRESS(server, type) (server.sin_addr.s_addr = htonl(type))
#define SRV_PORT(server, number)  (server.sin_port = htons(number))

#define NET AF_INET
#define ANY INADDR_ANY
#define TCP SOCK_STREAM

void Read(int connection)
{
    char buff[MAX] = "";

    // read the message from client and copy it in buffer
    read(connection, buff, sizeof(buff));

    // print buffer which contains the client contents
    printf("From client:\n\n");
    printf("%s", buff);
}
void Write(int connection)
{
    char response_HEAD[] = "HTTP/1.1 200 OK";
    int header_bytes = sizeof(response_HEAD) - 1;

    char response_BREAK[] = "\n\n";
    int break_bytes = sizeof(response_BREAK) - 1;

    char response_BODY[] = "<html><body><h1>Hi Menangen</h1></body></html>";
    int body_bytes = sizeof(response_BODY) - 1;

    // and send response[] to client without "\0" string
    write(connection, response_HEAD, header_bytes);

    write(connection, response_BREAK, break_bytes);

    write(connection, response_BODY, body_bytes);

    printf("\n\n");

    printf( "sent %i bytes:\n_________________\n",
            header_bytes + break_bytes + body_bytes );

    puts(response_HEAD);
    printf("%s", response_BREAK);
    puts(response_BODY);

    puts("_________________");
}

// Driver function
int main()
{
    int sock_descriptor, connection;
    socketAddress server, client;

    socketSize client_size = sizeof(client);
    socketSize server_size = sizeof(server);

    // socket create and verification
    sock_descriptor = socket(NET, TCP, 0);
    if (sock_descriptor == -1) {
        printf("socket creation failed...\n");
        exit(0);
    }
    else
        printf("Socket successfully created..\n");
    bzero(&server, server_size);

    // assign IP, PORT
    SRV_FAMILY (server, NET);
    SRV_ADDRESS(server, ANY);
    SRV_PORT   (server, PORT);

    // Binding newly created socket to given IP and verification
    if (SERVER_BIND(sock_descriptor, server) != 0) {
        printf("socket bind failed...\n");
        exit(0);
    }
    else
        printf("Socket successfully binded..\n");

    // Now server is ready to listen and verification
    if (listen(sock_descriptor, 5) != 0) {
        printf("Listen failed...\n");
        exit(0);
    }
    else
        printf("Server listening..\n");

    // Accept the data packet from client and verification
    connection = ACCEPT(sock_descriptor, client);
    if (connection < 0) {
        printf("server accept failed...\n");
        exit(0);
    }
    else
        printf("server accept the client...\n");

    // Function for communication between client and server
    Read(connection);
    Write(connection);

    // After close the socket
    close(sock_descriptor);
}

## server.c
#include <stdio.h>
#include <netdb.h>
#include <netinet/in.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>

#include <sys/socket.h>
#include <unistd.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;
    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");
    socklen_t len = sizeof(cli);

    // Accept the data packet from client and verification
    connfd = accept(sockfd, (SA*)&cli, &len);
    if (connfd < 0) {
        printf("server accept failed...\n");
        exit(0);
    }
    else
        printf("server accept the client...\n");

    // Function for chatting between client and server
    func(connfd);

    // After chatting close the socket
    close(sockfd);
}
	#include <netdb.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>

	#include <sys/socket.h>
	#include <unistd.h>
	#include <arpa/inet.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);
	}
	#include <stdio.h>
	#include <netdb.h>
	#include <netinet/in.h>
	#include <stdlib.h>
	#include <string.h>
	#include <sys/types.h>

	#include <sys/socket.h>
	#include <unistd.h>

	#define MAX 255
	#define PORT 8080

	typedef struct sockaddr_in socketAddress;
	typedef struct sockaddr* socketInfo;
	typedef socklen_t socketSize;

	#define ACCEPT(s, client) accept(s, (socketInfo)&client, &client_size)
	#define SERVER_BIND(s, server) bind (s, (socketInfo)&server, server_size)

	#define SRV_FAMILY(server, to) (server.sin_family = to)
	#define SRV_ADDRESS(server, type) (server.sin_addr.s_addr = htonl(type))
	#define SRV_PORT(server, number) (server.sin_port = htons(number))

	#define NET AF_INET
	#define ANY INADDR_ANY
	#define TCP SOCK_STREAM

	void Read(int connection)
	{
	char buff[MAX] = "";

	// read the message from client and copy it in buffer
	read(connection, buff, sizeof(buff));

	// print buffer which contains the client contents
	printf("From client:\n\n");
	printf("%s", buff);
	}
	void Write(int connection)
	{
	char response_HEAD[] = "HTTP/1.1 200 OK";
	int header_bytes = sizeof(response_HEAD) - 1;

	char response_BREAK[] = "\n\n";
	int break_bytes = sizeof(response_BREAK) - 1;

	char response_BODY[] = "<html><body><h1>Hi Menangen</h1></body></html>";
	int body_bytes = sizeof(response_BODY) - 1;

	// and send response[] to client without "\0" string
	write(connection, response_HEAD, header_bytes);

	write(connection, response_BREAK, break_bytes);

	write(connection, response_BODY, body_bytes);

	printf("\n\n");

	printf( "sent %i bytes:\n_________________\n",
	header_bytes + break_bytes + body_bytes );

	puts(response_HEAD);
	printf("%s", response_BREAK);
	puts(response_BODY);

	puts("_________________");
	}

	// Driver function
	int main()
	{
	int sock_descriptor, connection;
	socketAddress server, client;

	socketSize client_size = sizeof(client);
	socketSize server_size = sizeof(server);

	// socket create and verification
	sock_descriptor = socket(NET, TCP, 0);
	if (sock_descriptor == -1) {
	printf("socket creation failed...\n");
	exit(0);
	}
	else
	printf("Socket successfully created..\n");
	bzero(&server, server_size);

	// assign IP, PORT
	SRV_FAMILY (server, NET);
	SRV_ADDRESS(server, ANY);
	SRV_PORT (server, PORT);

	// Binding newly created socket to given IP and verification
	if (SERVER_BIND(sock_descriptor, server) != 0) {
	printf("socket bind failed...\n");
	exit(0);
	}
	else
	printf("Socket successfully binded..\n");

	// Now server is ready to listen and verification
	if (listen(sock_descriptor, 5) != 0) {
	printf("Listen failed...\n");
	exit(0);
	}
	else
	printf("Server listening..\n");

	// Accept the data packet from client and verification
	connection = ACCEPT(sock_descriptor, client);
	if (connection < 0) {
	printf("server accept failed...\n");
	exit(0);
	}
	else
	printf("server accept the client...\n");

	// Function for communication between client and server
	Read(connection);
	Write(connection);

	// After close the socket
	close(sock_descriptor);
	}