get input assignment

client.c

#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>

int main(int argc, char **argv)
{
    int sockfd, n;
    char sendline[1000];
    char recvline[1000];
    struct sockaddr_in servaddr;

    sockfd = socket(AF_INET, SOCK_STREAM, 0);
    bzero(&servaddr, sizeof servaddr);

    servaddr.sin_family = AF_INET;
    servaddr.sin_port = htons(50000);

    // your address ex)ec2-(??).ap-northeast-2.compute.amazonaws.com
    inet_pton(AF_INET, "127.0.0.1", &(servaddr.sin_addr));
    connect(sockfd, (struct sockaddr *) &servaddr, sizeof(servaddr));

    while(1)
    {
        bzero(sendline, 100);
        bzero(recvline, 100);
        fgets(sendline, 100, stdin);

        
        write(sockfd, sendline, strlen(sendline) + 1);
        if(!strcmp(sendline, "0\n")) break;
        //printf("%d", sendline);
        //printf("%s", recvline);
    }
}

server.py

import socket
import threading
import sys

class Server():
    def __init__(self, host="localhost", port=50000):

        self.clientes = []

        self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.sock.bind((str(host), int(port)))
        self.sock.listen(10)
        self.sock.setblocking(False)

        # Client Info
        self.num_client = -1
        self.ID_client = []

        #thread - connect client, thread - receive Msg
        thread_Accept = threading.Thread(target=self.Msg_Accept)
        thread_Receive = threading.Thread(target=self.Msg_Receive)
        thread_Accept.start()
        thread_Receive.start()


    def Msg_Accept(self):
        print("waiting client connect")
        while True:
            try:
                conn, addr = self.sock.accept()
                conn.setblocking(False)
                self.clientes.append(conn)
            except:
                pass

    def Msg_Receive(self):
        print("waiting client data")
        while True:
            if len(self.clientes) > 0:
                c_count = 0
                for c in self.clientes:
                    c_count += 1

                    try:
                        data = c.recv(1024)
                        if data:
                            print (c_count, " : ", data)
                    except:
                        pass

s = Server()