[C] Comunicazione Client Server

Salve a tutti. Stavo facendo una semplice prova di trasmissione di un file.txt da un client ad un server. Utilizzando linux come sistema operativo.

Il codice scritto e' il seguente

CLIENT

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>

int main ( int agrc, char *argv[] )
{
	int Socket;
	struct sockaddr_in Server_Address;	
	Socket = socket ( AF_INET, SOCK_STREAM, 0 );
	if ( Socket == -1 )
	{	
		printf ("Can Not Create A Socket!");	
	}
	int Port ;
	Port = atoi(argv[2]);	
	Server_Address.sin_family = AF_INET;
	Server_Address.sin_port = htons ( Port );
	Server_Address.sin_addr.s_addr = inet_addr(argv[1]);
	if ( Server_Address.sin_addr.s_addr == INADDR_NONE )
	{
		printf ( "Bad Address!" );
	}	
	connect ( Socket, (struct sockaddr *)&Server_Address, sizeof (Server_Address) );


        char *path;
        char *filename;
        path = "/home/carlo/Desktop/manda.txt";
        filename = strrchr(path, '/') + 1;
        send(Socket,filename,sizeof(filename),0);

        FILE *in = fopen("1.tar.gz","r");
        char Buffer[2] = "";
        int len;
        while ((len = fread(Buffer,sizeof(Buffer),1, in)) > 0)
        {            
            send(Socket,Buffer,sizeof(Buffer),0);            
        }
        send(Socket,"Hi",sizeof(Buffer),0);

        char Buf[BUFSIZ];
	recv(Socket, Buf, BUFSIZ, 0);
        if ( strcmp (Buf,"ACK") == 0  )
        {
            printf("Recive ACK\n");
        }        
        close (Socket);
        fclose(in);
	return 0;	
}

E per il server

SERVER

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>

int main ( int agrc, char *argv[] )
{
	/******** Program Variable Define & Initialize **********/
	int Main_Socket; 	// Main Socket For Server
	int Communication_Socket; // Socket For Special Clients
	int Status; // Status Of Fucntion
	struct sockaddr_in Server_Address; // Address Of Server
	struct sockaddr_in Client_Address; // Address Of Client That Communicate Whit Server
	int Port ;
        char Buff[100] = "";
	Port = atoi(argv[2]);
	printf ("Server Communicating By Using Port %d\n", Port);
	/******** Create A Socket To Communicate With Server **********/
	Main_Socket = socket ( AF_INET, SOCK_STREAM, 0 );
	if ( Main_Socket == -1 )
	{
		printf ("Sorry System Can Not Create Socket!\n");
	}
	/******** Create A Address For Server To Communicate **********/
	Server_Address.sin_family = AF_INET;
	Server_Address.sin_port = htons(Port);
	Server_Address.sin_addr.s_addr = inet_addr(argv[1]);
	/******** Bind Address To Socket **********/
	Status = bind ( Main_Socket, (struct sockaddr*)&Server_Address, sizeof(Server_Address) );
	if ( Status == -1 )
	{
		printf ("Sorry System Can Not Bind Address to The Socket!\n");
	}
	/******** Listen To The Port to Any Connection **********/        
	listen (Main_Socket,12);	
	socklen_t Lenght = sizeof (Client_Address);
        while (1)
        {
            Communication_Socket = accept ( Main_Socket, (struct sockaddr*)&Client_Address, &Lenght );
            if (!fork())
            {

                char CH[8];
                recv(Communication_Socket, CH, sizeof(CH), 0);
                printf("%s\n",CH);
                
                FILE *fp=fopen("sample.tar.gz","w");
                while(1)
                {
                    char Buffer[2]="";
                    if (recv(Communication_Socket, Buffer, sizeof(Buffer), 0))
                    {
                        if ( strcmp (Buffer,"Hi") == 0  )
                        {
                            break;
                        }
                        else
                        {
                            fwrite(Buffer,sizeof(Buffer),1, fp);
                        }
                    }
                }
                fclose(fp);
                send(Communication_Socket, "ACK" ,3,0);
                printf("ACK Send");
		exit(0);
            }
        }
	return 0;
}

lanciando prima il server mettendo come indirizzo 127.0.0.1 e porta 5554 il server parte e non da problemi.
Lanciando invece il client mettendo indirizzo 127.0.0.1 e porta 5554 viene restituito il seguente errore..... Segmentation fault (core dumped)


Qualcuno di voi sa il perche'?
Grazie a tutti per l'aiuto