def _get_next_header(s):
""" Read the header of the next message from the server.
Assumes that the next data sent from the server is a completely
new message. """
(header, closed) = netutils.readall(s._socket,9);
if (closed):
s.disconnect();
if (len(header) > 0):
raise ConnectionError("Connection closed when reading message.");
else:
raise ConnectionError("Trying to read from closed connection.");
msgtype, msglen = struct.unpack("!BQ", header);
msgtype = netutils.htonb(msgtype);
return (msgtype, msglen);
#!/usr/bin/python2
from __future__ import print_function
import socket
import json
import argparse
import struct
import time
import os,sys
import netutils
import ConfigParser
import numpy
JSON_MSG = netutils.htonb(74); # Ascii 'J'
SRV_MSG = netutils.htonb(83); # Ascii 'S'
BIN_REQUEST = netutils.htonb(66); # Ascii 'B'
BIN_FILE = netutils.htonb(70); # Ascii 'F'
BIN_ACK = netutils.htonb(65); # Ascii 'A'
KEEPALIVE = netutils.htonb(75); # Ascii 'K'
## General error for the RE atlas
class REatlasError(Exception):
pass;
# Connection specific error with the atlas.
# When this is raised, the connection is always closed afterwards.
class ConnectionError(Exception):
pass;