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#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>
#include <string.h>
#include <arpa/inet.h>
int main() {
int sockfd, connfd;
struct sockaddr_in servaddr, cli;
sockfd = socket(AF_INET, SOCK_STREAM, 0);
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
int port = 0;
printf("Enter port to bind to: ");
scanf("%d", &port);
fflush(stdout);
fflush(stdin);
servaddr.sin_port = htons(port);
bind(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr));
listen(sockfd, 128);
socklen_t len = sizeof(cli);
printf("Server started at %s...\n", inet_ntoa(servaddr.sin_addr));
fflush(stdout);
connfd = accept(sockfd, (struct sockaddr *)&cli, &len);
if (connfd < 0) {
printf("Couldn't open socket!\n");
close(sockfd);
return -1;
}
printf("Client connected with IP address: %s\n", inet_ntoa(cli.sin_addr));
fflush(stdout);
char filename[100];
bzero(filename, 100);
int n;
n = recv(connfd, filename, 100, 0);
printf("received: '%s'", filename);
fflush(stdout);
FILE *request_file = fopen(filename, "r");
if (request_file == NULL) {
printf("File not found: %s", filename);
send(connfd, "file not found", 14, 0);
} else {
char file_contents[500];
while(fgets(file_contents, 100, request_file)) {
fflush(stdout);
send(connfd, file_contents, 100, 0);
};
fclose(request_file);
}
fflush(stdout);
close(sockfd);
}
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