Day 13.C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>

#define PORT 8080

int main() {
    int sockfd, newsockfd, clilen, n;
    struct sockaddr_in serv_addr, cli_addr;
    char buffer[256];
    FILE *fp;

    sockfd = socket(AF_INET, SOCK_STREAM, 0);

    bzero((char *) &serv_addr, sizeof(serv_addr));
    serv_addr.sin_family = AF_INET;
    serv_addr.sin_addr.s_addr = INADDR_ANY;
    serv_addr.sin_port = htons(PORT);

    bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr));
    listen(sockfd, 5);

    clilen = sizeof(cli_addr);

    while (1) {
        newsockfd = accept(sockfd, (struct sockaddr *) &cli_addr, &clilen);
        bzero(buffer, 256);
        n = read(newsockfd, buffer, 255);
        if (n < 0) {
            perror("Error reading from socket");
            exit(1);
        }
        printf("Received request: %s\n", buffer);
        fp = fopen(buffer, "rb");
        if (fp == NULL) {
            printf("Error opening file\n");
            exit(1);
        }
        while ((n = fread(buffer, 1, 256, fp)) > 0) {
            write(newsockfd, buffer, n);
        }
        fclose(fp);
        close(newsockfd);
    }

    return 0;
}