88 lines
2.8 KiB
Python
88 lines
2.8 KiB
Python
#!/usr/bin/env python
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#
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# Copyright 2012 Nick Foster
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#
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# This file is part of gr-air-modes
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#
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# gr-air-modes is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3, or (at your option)
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# any later version.
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#
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# gr-air-modes is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with gr-air-modes; see the file COPYING. If not, write to
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# the Free Software Foundation, Inc., 51 Franklin Street,
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# Boston, MA 02110-1301, USA.
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#
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#multilateration client
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#outputs stamps to server, receives multilaterated outputs back
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import socket, pickle, time, sys
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import air_modes
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from gnuradio import gr
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pickle_prot = 0
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#pickle_prot = pickle.HIGHEST_PROTOCOL
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class client_info:
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def __init__(self):
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self.name = ""
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self.position = []
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self.offset_secs = 0
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self.offset_frac_secs = 0.0
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self.time_source = None
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class mlat_client:
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def __init__(self, queue, position, server_addr, time_source):
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self._queue = queue
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self._pos = position
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self._name = socket.gethostname()
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#connect to server
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self._sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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self._sock.setblocking(1)
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self._sock.connect((server_addr, 19005))
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info = client_info()
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info.name = self._name
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info.position = self._pos
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info.time_source = time_source #"gpsdo" or None
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self._sock.send(pickle.dumps(info))
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reply = self._sock.recv(1024)
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if reply != "HELO": #i know, shut up
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raise Exception("Invalid reply from server: %s" % reply)
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self._sock.setblocking(0)
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self._remnant = None
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def __del__(self):
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self._sock.close()
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#send a stamped report to the server
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def output(self, message):
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self._sock.send(message+"\n")
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#this is called from the update() method list of the main app thread
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def get_mlat_positions(self):
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msg = None
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try:
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msg = self._sock.recv(1024)
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except socket.error:
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pass
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if msg:
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for line in msg.splitlines(True):
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if line.endswith("\n"):
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if self._remnant:
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line = self._remnant + line
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self._remnant = None
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self._queue.insert_tail(gr.message_from_string(line))
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else:
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if self._remnant is not None:
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raise Exception("Malformed data: " + line)
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else:
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self._remnant = line
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