What to do after shutdown(sock, SD_SEND) - sockets

Question

I want to send several files from Server to the Client but I'm having a problem.
Server sendfile code:
while ((len = fread(Buffer,1,sizeof(Buffer), fs)) > 0)
{
if((resultEnviar = send(ClientSocket,Buffer,len,0)) < 0){
printf("ERROR: Failed to send file %s.\n", nombreArchivoADescargar.c_str());
break;
}
sumEnviada+=resultEnviar;
}
fclose(fs);
Client receiveFile code:
//shutdown(sock, SD_SEND); ???????
do{
recvVal = recv(sock, Buffer2, sizeof(Buffer2), 0);
if (recvVal <= 0){
printf("Can't read from socket");
recvVal =0;
fclose(fp);
continue;
}else{
int off =0;
do{
int write_sz = fwrite(Buffer2, 1, recvVal, fp);
if (write_sz < 0){
printf("Can't write to file");
fclose(fp);
break;};
if (write_sz == 0) {cout<<endl<<"Nada que copiar"<<endl; break;}
off += write_sz;
}while(off<recvVal);
bzero(Buffer2, 1024);
contador+=off;
}
}while (contador<LongitudArchivo);
cout<<endl<<"Numero de bytes recibidos: "<<contador<<endl<<endl;
printf("Ok received from client!\n");
fclose(fp);
If I don't use the SHUTDOWN(sock, SD_SEND) I don't receive all the expected bytes but if I use it I don't know how to send more files (how to wake up the send part of the socket).
Thanks!

Answer 1

I don't see what shutdown() has to do with it. You should receive all the bytes either way. If you want to send multiple files, you will have to send the length ahead of each one and read exactly that many following bytes from the socket into each target file.
NB If recv() returns zero you should close the socket and break. If it returns -1 you should log the errno, e.g. via perror(), close the socket, and break.