training_repo/Non_Blocking_socket/server.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
#include<pthread.h>

#define PORT 8081
#define BUFFER_SIZE 1024


void* thread_fun(void* n) {
    char buffer[100];
    int read_size = 0;
    int sockfd = *(int*)n;

    printf("Inside thread function\n");

    while(1)
    {
    read_size = read(sockfd, buffer, sizeof(buffer) - 1);

    if (read_size < 0) {
        perror("Read error");
    } else if (read_size == 0) {
        printf("Client disconnected\n");
    } else {
        buffer[read_size] = '\0';
        printf("Received data: %s\n", buffer);
    }
    }
    close(sockfd);
    return NULL;
}


int main() {
    int server_fd, new_socket;
    struct sockaddr_in address;
    int opt = 1;
    int addrlen = sizeof(address);
    char buffer[BUFFER_SIZE] = {0};


    pthread_t t1;

    // Creating socket file descriptor
    if ((server_fd = socket(AF_INET, SOCK_STREAM, 0))< 0) {
        perror("Socket failed");
        exit(EXIT_FAILURE);
    }

    // Setting up the address structure
    address.sin_family = AF_INET;
    address.sin_addr.s_addr = INADDR_ANY; // Accept connections from any IP
    address.sin_port = htons(PORT);

    // Binding the socket to the port
    if (bind(server_fd, (struct sockaddr *)&address, sizeof(address)) < 0) {
        perror("Bind failed");
   exit(EXIT_FAILURE);
    }
    if (listen(server_fd, 3) < 0) {
        perror("Listen");
        exit(EXIT_FAILURE);
    }

    printf("Server listening on port %d\n", PORT);

    while(1)
    {
    if ((new_socket = accept(server_fd, (struct sockaddr *)&address, (socklen_t*)&addrlen)) < 0) {
        perror("Accept");
        exit(EXIT_FAILURE);
    }

        printf("server connected to client\n");

        //pthread_t t1;

        pthread_create(&t1,NULL,thread_fun,&new_socket);


    }
    pthread_detach(t1);


}