Add TCP raw data server for mlat purposes
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src/python/modes_raw_server.py
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52
src/python/modes_raw_server.py
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#
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# Copyright 2010 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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import time, os, sys, socket
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from string import split, join
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from datetime import *
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class modes_raw_server:
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def __init__(self):
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self._s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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self._s.bind(('', 9988))
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self._s.listen(1)
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self._s.setblocking(0) #nonblocking
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self._conns = [] #list of active connections
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def __del__(self):
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self._s.close()
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def output(self, msg):
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for conn in self._conns[:]: #iterate over a copy of the list
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try:
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conn.send(msg)
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except socket.error:
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self._conns.remove(conn)
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print "Connections: ", len(self._conns)
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def add_pending_conns(self):
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try:
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conn, addr = self._s.accept()
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self._conns.append(conn)
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print "Connections: ", len(self._conns)
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except socket.error:
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pass
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@ -33,6 +33,7 @@ from modes_print import modes_output_print
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from modes_sql import modes_output_sql
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from modes_sbs1 import modes_output_sbs1
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from modes_kml import modes_kml
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from modes_raw_server import modes_raw_server
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import gnuradio.gr.gr_threading as _threading
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import csv
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@ -133,6 +134,8 @@ if __name__ == '__main__':
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help="filename for Google Earth KML output")
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parser.add_option("-P","--sbs1", action="store_true", default=False,
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help="open an SBS-1-compatible server on port 30003")
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parser.add_option("-w","--raw", action="store_true", default=False,
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help="open a server outputting raw timestamped data on port 9988")
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parser.add_option("-n","--no-print", action="store_true", default=False,
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help="disable printing decoded packets to stdout")
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parser.add_option("-l","--location", type="string", default=None,
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@ -162,12 +165,17 @@ if __name__ == '__main__':
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if options.no_print is not True:
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outputs.append(modes_output_print(my_position).parse)
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if options.raw is True:
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rawport = modes_raw_server()
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outputs.append(rawport.output)
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updates.append(rawport.add_pending_conns)
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fg = adsb_rx_block(options, args, queue)
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runner = top_block_runner(fg)
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while 1:
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try:
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#the update registry is really for the SBS1 plugin -- we're looking for new TCP connections.
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#the update registry is really for the SBS1 and raw server plugins -- we're looking for new TCP connections.
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#i think we have to do this here rather than in the output handler because otherwise connections will stack up
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#until the next output arrives
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for update in updates:
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