This code sets up a TCP server that listens on...

December 8, 2023 at 01:41 AM

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

#define SA struct sockaddr

int listenfd, connfd;

void function(char *str) {
    char readbuf[256];
    char writebuf[256];
    strcpy(readbuf, str);
    sprintf(writebuf, "%s", readbuf);
    write(connfd, writebuf, strlen(writebuf));
}

int main(int argc, char *argv[]) {
    char line[1024];
    struct sockaddr_in servaddr;
    ssize_t n;
    
    listenfd = socket(AF_INET, SOCK_STREAM, 0);
    bzero(&servaddr, sizeof(servaddr));
    servaddr.sin_family = AF_INET;
    servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
    servaddr.sin_port = htons(7776);
    
    bind(listenfd, (SA*)&servaddr, sizeof(servaddr));
    listen(listenfd, 1024);
    
    for (;;) {
        connfd = accept(listenfd, (SA*)NULL, NULL);
        write(connfd, ">", 2);
        n = read(connfd, line, sizeof(line) - 1);
        line[n] = 0;
        function(line);
        close(connfd);
    }

This code sets up a TCP server that listens on port 7776. It waits for incoming connections, and when a connection is established, it sends a ">" prompt to the client. It then reads a line of input from the client, passes it to the function() function, and sends the result back to the client. The server continues to accept new connections and process input until it is terminated.

Generate your own explanations

Download our vscode extension

Read other generated explanations

Built by @thebuilderjr