GOROman · March 3, 2025 22:16 · GOROman · Mar 3, 2025
diff --git a/webserver.c b/webserver.c
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 #include <arpa/inet.h>
 #include <sys/socket.h>

 #define PORT 8080
 #define BUFFER_SIZE 1024

 int main() {
    int server_fd, new_socket;
    struct sockaddr_in address;
    int addrlen = sizeof(address);
    char buffer[BUFFER_SIZE] = {0};
    
    // HTTP response with "hello, world" in H1 tag
    char *http_response = "HTTP/1.1 200 OK\r\n"
                         "Content-Type: text/html\r\n"
                         "Connection: close\r\n"
                         "\r\n"
                         "<!DOCTYPE html>\r\n"
                         "<html>\r\n"
                         "<head>\r\n"
                         "    <title>Simple C Web Server</title>\r\n"
                         "</head>\r\n"
                         "<body>\r\n"
                         "    <h1>hello, world</h1>\r\n"
                         "</body>\r\n"
                         "</html>\r\n";
    
    // Creating socket file descriptor
    if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) {
        perror("Socket creation failed");
        exit(EXIT_FAILURE);
    }
    
    // Set socket options to reuse address and port
    int opt = 1;
    if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt))) {
        perror("Setsockopt failed");
        exit(EXIT_FAILURE);
    }
    
    // Set up server address structure
    address.sin_family = AF_INET;
    address.sin_addr.s_addr = INADDR_ANY;
    address.sin_port = htons(PORT);
    
    // Bind the socket to the specified port
    if (bind(server_fd, (struct sockaddr *)&address, sizeof(address)) < 0) {
        perror("Bind failed");
        exit(EXIT_FAILURE);
    }
    
    // Listen for incoming connections
    if (listen(server_fd, 3) < 0) {
        perror("Listen failed");
        exit(EXIT_FAILURE);
    }
    
    printf("Server running on port %d...\n", PORT);
    
    while (1) {
        printf("Waiting for a connection...\n");
        
        // Accept an incoming connection
        if ((new_socket = accept(server_fd, (struct sockaddr *)&address, (socklen_t*)&addrlen)) < 0) {
            perror("Accept failed");
            exit(EXIT_FAILURE);
        }
        
        // Read the incoming request
        read(new_socket, buffer, BUFFER_SIZE);
        printf("Request received:\n%s\n", buffer);
        
        // Send HTTP response
        write(new_socket, http_response, strlen(http_response));
        printf("Response sent\n");
        
        // Close the connection
        close(new_socket);
    }
    
    return 0;
 }
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <unistd.h>
	#include <arpa/inet.h>
	#include <sys/socket.h>

	#define PORT 8080
	#define BUFFER_SIZE 1024

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

	// HTTP response with "hello, world" in H1 tag
	char *http_response = "HTTP/1.1 200 OK\r\n"
	"Content-Type: text/html\r\n"
	"Connection: close\r\n"
	"\r\n"
	"<!DOCTYPE html>\r\n"
	"<html>\r\n"
	"<head>\r\n"
	" <title>Simple C Web Server</title>\r\n"
	"</head>\r\n"
	"<body>\r\n"
	" <h1>hello, world</h1>\r\n"
	"</body>\r\n"
	"</html>\r\n";

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

	// Set socket options to reuse address and port
	int opt = 1;
	if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt))) {
	perror("Setsockopt failed");
	exit(EXIT_FAILURE);
	}

	// Set up server address structure
	address.sin_family = AF_INET;
	address.sin_addr.s_addr = INADDR_ANY;
	address.sin_port = htons(PORT);

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

	// Listen for incoming connections
	if (listen(server_fd, 3) < 0) {
	perror("Listen failed");
	exit(EXIT_FAILURE);
	}

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

	while (1) {
	printf("Waiting for a connection...\n");

	// Accept an incoming connection
	if ((new_socket = accept(server_fd, (struct sockaddr )&address, (socklen_t)&addrlen)) < 0) {
	perror("Accept failed");
	exit(EXIT_FAILURE);
	}

	// Read the incoming request
	read(new_socket, buffer, BUFFER_SIZE);
	printf("Request received:\n%s\n", buffer);

	// Send HTTP response
	write(new_socket, http_response, strlen(http_response));
	printf("Response sent\n");

	// Close the connection
	close(new_socket);
	}

	return 0;
	}