TCP Client in C

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include <arpa/inet.h>

#define SERVER_PORT 8080

#define BUFFER_SIZE 1024

int main() {

    int sock;

    struct sockaddr_in server_address;

    char buffer[BUFFER_SIZE];

    char *message = "Hello, Server!";

    // Create socket

    if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {

        perror("Socket creation failed");

        exit(EXIT_FAILURE);

    }

    // Define server address

    server_address.sin_family = AF_INET;

    server_address.sin_port = htons(SERVER_PORT);

    // Convert IPv4 address from text to binary

    if (inet_pton(AF_INET, "127.0.0.1", &server_address.sin_addr) <= 0) {

        perror("Invalid address/ Address not supported");

        close(sock);

        exit(EXIT_FAILURE);

    }

    // Connect to the server

    if (connect(sock, (struct sockaddr *)&server_address, sizeof(server_address)) < 0) {

        perror("Connection failed");

        close(sock);

        exit(EXIT_FAILURE);

    }

    // Send message to server

    send(sock, message, strlen(message), 0);

    printf("Message sent: %s\n", message);

    // Receive server response

    int bytes_received = recv(sock, buffer, BUFFER_SIZE, 0);

    if (bytes_received > 0) {

        buffer[bytes_received] = '\0';

        printf("Message received: %s\n", buffer);

    }

    // Close socket

    close(sock);

    return 0;

}