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menangen/client.c

Last active December 18, 2021 22:23
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UNIX C TCP socket: server and client
Raw
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);
}
Raw
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);
}
Raw
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);
}
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