Socket и понимание команд от telnet

#include <stdio.h>
#include <string.h>    //strlen
#include <stdlib.h>    //strlen
#include <sys/socket.h>
#include <arpa/inet.h> //inet_addr
#include <unistd.h>    //write
#include <pthread.h> //for threading , link with lpthread
 
void *connection_handler(void *);
 
int main(int argc , char *argv[])
{
    int socket_desc , new_socket , c , *new_sock;
    struct sockaddr_in server , client;
    char *message;
 
    //Create socket
    socket_desc = socket(AF_INET , SOCK_STREAM , 0);
    if (socket_desc == -1)
    {
        printf("Could not create socket");
    }
 
    //Prepare the sockaddr_in structure
    server.sin_family = AF_INET;
    server.sin_addr.s_addr = INADDR_ANY;
    server.sin_port = htons( 8888 );
 
    //Bind
    if( bind(socket_desc,(struct sockaddr *)&server , sizeof(server)) < 0)
    {
        puts("bind failed");
        return 1;
    }
    puts("bind done");
 
    //Listen
    listen(socket_desc , 3);
 
    //Accept and incoming connection
    puts("Waiting for incoming connections...");
    c = sizeof(struct sockaddr_in);
    while( (new_socket = accept(socket_desc, (struct sockaddr *)&client, (socklen_t*)&c)) )
    {
        puts("Connection accepted");
 
        //Reply to the client
        message = "Hello Client , I have received your connection. And now I will assign a handler for you\n";
        write(new_socket , message , strlen(message));
 
        pthread_t sniffer_thread;
        new_sock = malloc(1);
        *new_sock = new_socket;
 
        if( pthread_create( &sniffer_thread , NULL ,  connection_handler , (void*) new_sock) < 0)
        {
            perror("could not create thread");
            return 1;
        }
 
        //Now join the thread , so that we dont terminate before the thread
        //pthread_join( sniffer_thread , NULL);
        puts("Handler assigned");
    }
 
    if (new_socket<0)
    {
        perror("accept failed");
        return 1;
    }
 
    return 0;
}
 
/*
 * This will handle connection for each client
 * */
void *connection_handler(void *socket_desc)
{
    //Get the socket descriptor
    char buffer[256];
    int sock = *(int*)socket_desc;
 
    int read_size;
    char *message , client_message[2000];
 
    //Send some messages to the client
    message = "Greetings! I am your connection handler\n";
    write(sock , message , strlen(message));
 
    message = "Now type something and i shall repeat what you type \n";
    write(sock , message , strlen(message));
 
    //Receive a message from client
    while( (read_size = recv(sock , client_message , 2000 , 0)) > 0 )
    {
        if(client_message == "get")
        {
            printf("COMMAND=%s",client_message);
        }
        //Send the message back to client
        write(sock , client_message , strlen(client_message));
 
    if(read_size == 0)
    {
        puts("Client disconnected");
        fflush(stdout);
    }
    else if(read_size == -1)
    {
        perror("recv failed");
    }
 
    //Free the socket pointer
    free(socket_desc);
 
    return 0;
}

if(client_message == "get")

if(!(strcmp(client_message, "get")))

printf("\"%s\"",client_message);

"get
"