#!/usr/bin/env python
#
# This is an example program that illustrates
# how to interact with the zeromq remote control
# using JSON.
#
# LICENSE: see bottom of file
import sys
import zmq
from pprint import pprint
import json
import re
from http.server import BaseHTTPRequestHandler, HTTPServer
import time
re_url = re.compile(r"/([a-zA-Z0-9]+).json")
ZMQ_REMOTE = "tcp://localhost:9400"
HTTP_HOSTNAME = "localhost"
HTTP_PORT = 8080
class DabMuxServer(BaseHTTPRequestHandler):
def err500(self, message):
self.send_response(500)
self.send_header("Content-type", "application/json")
self.end_headers()
self.wfile.write(json.dumps({"error": message}).encode())
def do_GET(self):
m = re_url.match(self.path)
if m:
sock = context.socket(zmq.REQ)
poller = zmq.Poller()
poller.register(sock, zmq.POLLIN)
sock.connect(ZMQ_REMOTE)
sock.send(b"ping")
socks = dict(poller.poll(1000))
if socks:
if socks.get(sock) == zmq.POLLIN:
data = sock.recv()
if data != b"ok":
print(f"Received {data} to ping!", file=sys.stderr)
self.err500("ping failure")
return
else:
print("ZMQ error: ping timeout", file=sys.stderr)
self.err500("ping timeout")
return
sock.send(b"showjson", flags=zmq.SNDMORE)
sock.send(m.group(1).encode())
socks = dict(poller.poll(1000))
if socks:
if socks.get(sock) == zmq.POLLIN:
data = sock.recv_multipart()
print("Received: {}".format(len(data)), file=sys.stderr)
parts = []
for i, part_data in enumerate(data):
part = part_data.decode()
print(" RX {}: {}".format(i, part.replace('\n',' ')), file=sys.stderr)
if i == 0 and part != "fail":
self.send_response(200)
self.send_header("Content-type", "application/json")
self.end_headers()
self.wfile.write(part_data)
return
parts.append(part)
self.err500("data error " + " ".join(parts))
return
else:
print("ZMQ error: timeout", file=sys.stderr)
self.err500("timeout")
return
else:
self.send_response(200)
self.send_header("Content-type", "text/html")
self.end_headers()
self.wfile.write("""<html><head><title>ODR-DabMod RC HTTP server</title></head>\n""".encode())
self.wfile.write("""<body>\n""".encode())
for mod in ("sdr", "tist", "modulator", "tii", "ofdm", "gain", "guardinterval"):
self.wfile.write(f"""<p><a href="{mod}.json">{mod}.json</a></p>\n""".encode())
self.wfile.write("""</body></html>\n""".encode())
if __name__ == "__main__":
context = zmq.Context()
webServer = HTTPServer((HTTP_HOSTNAME, HTTP_PORT), DabMuxServer)
print("Server started http://%s:%s" % (HTTP_HOSTNAME, HTTP_PORT))
try:
webServer.serve_forever()
except KeyboardInterrupt:
pass
webServer.server_close()
context.destroy(linger=5)
# This is free and unencumbered software released into the public domain.
#
# Anyone is free to copy, modify, publish, use, compile, sell, or
# distribute this software, either in source code form or as a compiled
# binary, for any purpose, commercial or non-commercial, and by any
# means.
#
# In jurisdictions that recognize copyright laws, the author or authors
# of this software dedicate any and all copyright interest in the
# software to the public domain. We make this dedication for the benefit
# of the public at large and to the detriment of our heirs and
# successors. We intend this dedication to be an overt act of
# relinquishment in perpetuity of all present and future rights to this
# software under copyright law.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#
# For more information, please refer to <http://unlicense.org>