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authorBob McElrath <bob_git@mcelrath.org>2017-01-06 18:23:44 -0500
committerBob McElrath <bob_git@mcelrath.org>2017-01-19 17:17:37 -0500
commit5ea5368b3a71ab91032ed08b919a4bf740cd676b (patch)
treed1d44bb33259f3cf8fc2fa4584eda7fe6906a881 /contrib/zmq
parent82274c02ed2d82537dc55f008a29edb1bc09bbc4 (diff)
ZMQ example using python3 and asyncio
Diffstat (limited to 'contrib/zmq')
-rwxr-xr-xcontrib/zmq/zmq_sub3.py52
1 files changed, 52 insertions, 0 deletions
diff --git a/contrib/zmq/zmq_sub3.py b/contrib/zmq/zmq_sub3.py
new file mode 100755
index 0000000000..79cb5b484c
--- /dev/null
+++ b/contrib/zmq/zmq_sub3.py
@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+# Copyright (c) 2014-2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+import array
+import binascii
+import asyncio, zmq, zmq.asyncio
+import struct
+
+port = 28332
+
+zmqContext = zmq.asyncio.Context()
+
+async def recv_and_process():
+ zmqSubSocket = zmqContext.socket(zmq.SUB)
+ zmqSubSocket.setsockopt_string(zmq.SUBSCRIBE, "hashblock")
+ zmqSubSocket.setsockopt_string(zmq.SUBSCRIBE, "hashtx")
+ zmqSubSocket.setsockopt_string(zmq.SUBSCRIBE, "rawblock")
+ zmqSubSocket.setsockopt_string(zmq.SUBSCRIBE, "rawtx")
+ zmqSubSocket.connect("tcp://127.0.0.1:%i" % port)
+
+ poller = zmq.asyncio.Poller()
+ poller.register(zmqSubSocket, zmq.POLLIN)
+ while True:
+ s = await poller.poll()
+ msg = await s[0][0].recv_multipart()
+ topic = msg[0]
+ body = msg[1]
+ sequence = "Unknown";
+ if len(msg[-1]) == 4:
+ msgSequence = struct.unpack('<I', msg[-1])[-1]
+ sequence = str(msgSequence)
+ if topic == b"hashblock":
+ print('- HASH BLOCK ('+sequence+') -')
+ print(binascii.hexlify(body))
+ elif topic == b"hashtx":
+ print('- HASH TX ('+sequence+') -')
+ print(binascii.hexlify(body))
+ elif topic == b"rawblock":
+ print('- RAW BLOCK HEADER ('+sequence+') -')
+ print(binascii.hexlify(body[:80]))
+ elif topic == b"rawtx":
+ print('- RAW TX ('+sequence+') -')
+ print(binascii.hexlify(body))
+
+try:
+ loop = zmq.asyncio.ZMQEventLoop()
+ asyncio.set_event_loop(loop)
+ loop.run_until_complete(setup())
+except KeyboardInterrupt:
+ zmqContext.destroy()