Function recvall

recipes/Python/577569_NBD_server_in_python/recipe-577569.py:5–10

(sock, length)

# Working: nbd protocol, read/write serving up files, error handling, file size detection, in theory, large file support... not really, so_reuseaddr, nonforking

def recvall(sock, length):
  rv = []
  while sum(map(len, rv)) < length:
    rv.append(sock.recv(length-sum(map(len, rv))))
    assert rv[-1], "no more data to read"
  return ''.join(rv)

def serveclient():
    READ, WRITE, CLOSE = 0,1,2