Send file from Server to Client on Linux in C

Hello guys,

I'm trying to implement a client - server communication for files transfer using TCP sockets in C .
OS : Ubuntu
What i want to achieve:
The server will listen for connections.
The client will connect to the server and will send the name of a file it wants to download.
The file will be located in the same folder with the server.
The server will open the file and will send the content to the client. The client will write the file in its current directory.

Client CODE:

Code:/*
C ECHO client example using sockets
*/
#include <stdio.h> //printf
#include <string.h> //strlen
#include <sys/socket.h> //socket
#include <arpa/inet.h> //inet_addr
#include <unistd.h>

int main(int argc , char *argv[])
{
int sock;
struct sockaddr_in server;
char message[1000] , server_reply[2000];

//Create socket
sock = socket(AF_INET , SOCK_STREAM , 0);
if (sock == -1)
{
printf("Could not create socket");
}
puts("Socket created");

server.sin_addr.s_addr = inet_addr("127.0.0.1");
server.sin_family = AF_INET;
server.sin_port = htons( 8888 );

//Connect to remote server
if (connect(sock , (struct sockaddr *)&server , sizeof(server)) < 0)
{
perror("connect failed. Error");
return 1;
}

puts("Connected\n");

//keep communicating with server
while(1)
{
printf("Enter message : ");
scanf("%s" , message);

//Send some data
if( send(sock , message , strlen(message) , 0) < 0)
{
puts("Send failed");
return 1;
}

//Receive a reply from the server
if( recv(sock , server_reply , 2000 , 0) < 0)
{
puts("recv failed");
break;
}

puts("Server reply :");
puts(server_reply);
}

close(sock);
return 0;
}Server code

Code:/*
C socket server example
*/

#include<stdio.h>
#include<string.h> //strlen
#include<sys/socket.h>
#include<arpa/inet.h> //inet_addr
#include<unistd.h> //write

void send_file(FILE *fp, int sockfd)
{
char data[SIZE] = {0};

while(fgets(data, SIZE, fp)!=NULL)
{
if(send(sockfd, data, sizeof(data), 0)== -1)
{
perror("[-] Error in sendung data");
exit(1);
}
bzero(data, SIZE);
}
}

int main(int argc , char *argv[])
{
int socket_desc , client_sock , c , read_size;
struct sockaddr_in server , client;
char client_message[2000];
FILE *fp;

//Create socket
socket_desc = socket(AF_INET , SOCK_STREAM , 0);
if (socket_desc == -1)
{
printf("Could not create socket");
}
puts("Socket created");

//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)
{
//print the error message
perror("bind failed. Error");
return 1;
}
puts("bind done");

//Listen
listen(socket_desc , 3);

//Accept and incoming connection
puts("Waiting for incoming connections...");
c = sizeof(struct sockaddr_in);

//accept connection from an incoming client
client_sock = accept(socket_desc, (struct sockaddr *)&client, (socklen_t*)&c);
if (client_sock < 0)
{
perror("accept failed");
return 1;
}
puts("Connection accepted");

//Receive a message from client
while( (read_size = recv(client_sock , client_message , 2000 , 0)) > 0 )
{
//Send the message back to client
fp = fopen(client_message,"r");
send_file(fp,socket_desc);
write(client_sock , client_message , strlen(client_message));
}

if(read_size == 0)
{
puts("Client disconnected");
fflush(stdout);
}
else if(read_size == -1)
{
perror("recv failed");
}

return 0;
}There is something that does not work and i cant figure it out.
Can you help me please?

I've got this as output:

**Client output:**
Code:`Socket created
Connected
Enter message: test.txt`
Server reply:`**Server output:**
Code:`Socket created
bind done
Waiting for incoming connections...
Connection accepted
Segmentation fault (core dumped)`Thanks,
Adrian