// TCP Client Program for SO_REUSEADDR server
// File: client.c

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

#define PORT 8080
#define SERVER_IP "192.168.2.1"

int main() {
    int sock;
    struct sockaddr_in server_addr;
    char buffer[1024];
    char *message = "Hello from client";

    // Create socket
    if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
        perror("Socket creation error");
        exit(EXIT_FAILURE);
    }

    server_addr.sin_family = AF_INET;
    server_addr.sin_port = htons(PORT);

    // Convert IPv4 and IPv6 addresses from text to binary form
    if (inet_pton(AF_INET, SERVER_IP, &server_addr.sin_addr) <= 0) {
        perror("Invalid address/ Address not supported");
        close(sock);
        exit(EXIT_FAILURE);
    }

    // Connect to server
    if (connect(sock, (struct sockaddr*)&server_addr, sizeof(server_addr)) < 0) {
        perror("Connection Failed");
        close(sock);
        exit(EXIT_FAILURE);
    }

    // Send message to server
    send(sock, message, strlen(message), 0);
    printf("Client: Sent message: %s\n", message);

    // Read server response
    int valread = read(sock, buffer, sizeof(buffer)-1);
    if (valread > 0) {
        buffer[valread] = '\0';
        printf("Client: Received: %s\n", buffer);
    }

    // Close socket
    close(sock);
    return 0;
}