simple tcp echo server

echoserver.c

//coded by m4n1G
//6-1-2014
//tcp echo server in unix env
#include "stdlib.h"
#include "sys/types.h"
#include "sys/socket.h"
#include "netinet/in.h"
#include "arpa/inet.h"

int main(int argc, char** argv) {
    int server_fd, client_fd;
    char c;
    struct sockaddr_in serv_addr;

    //create a socket
    server_fd = socket(AF_INET,SOCK_STREAM,0);

    //getting ready to bind
    serv_addr.sin_family = AF_INET;
    serv_addr.sin_port = htons(atoi(argv[1]));
    serv_addr.sin_addr.s_addr = INADDR_ANY;
    //bind
    bind(server_fd, (struct sockaddr*) &serv_addr, sizeof(serv_addr));

    //listen to one queue
    listen(server_fd,1);
    
    //accept one client
    client_fd = accept(server_fd, NULL, NULL);

    //read and write until ^D from client
    while(read(client_fd, &c, 1)) { //read from client
    putchar((int)c);
    write(client_fd, &c, 1); // write to client
    }

    //close the connection
    close(client_fd);
    close(server_fd);
    return 0;
}

echoclient.c

//coded my m4n1g
//on 6-1-2014
//tcp echo client

#include "stdio.h"
#include "stdlib.h"
#include "sys/types.h"
#include "sys/socket.h"
#include "netinet/in.h"
#include "arpa/inet.h"

int main(int argc, char** argv) {
    int client_fd;
    struct sockaddr_in serv_addr;
    char c;
    
    //create socket
    client_fd = socket(AF_INET,SOCK_STREAM,0);

    //ready to bind
    serv_addr.sin_family = AF_INET;
    serv_addr.sin_port = htons(atoi(argv[2]));
    serv_addr.sin_addr.s_addr = inet_addr(argv[1]);

    //connect to server
    connect(client_fd, (struct sockaddr*) &serv_addr, sizeof(serv_addr));

    //write to echo server
    while((c=(char) getchar())!=EOF) {
    write(client_fd,&c,1);
    read(client_fd,&c,1);
    putchar((int)c);
    }

    close(client_fd);
    return 0;
}