diff options
Diffstat (limited to 'contrib/mgcp_server.py')
-rwxr-xr-x | contrib/mgcp_server.py | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/contrib/mgcp_server.py b/contrib/mgcp_server.py new file mode 100755 index 000000000..05c489db5 --- /dev/null +++ b/contrib/mgcp_server.py @@ -0,0 +1,60 @@ +#!/usr/bin/env python +# Simple server for mgcp... send audit, receive response.. + +import socket, time + +MGCP_GATEWAY_PORT = 2427 +MGCP_CALLAGENT_PORT = 2727 + +rsip_resp = """200 321321332\r\n""" +audit_packet = """AUEP %d 13@mgw MGCP 1.0\r\n""" +crcx_packet = """CRCX %d 14@mgw MGCP 1.0\r\nC: 4a84ad5d25f\r\nL: p:20, a:GSM-EFR, nt:IN\r\nM: recvonly\r\n""" +dlcx_packet = """DLCX %d 14@mgw MGCP 1.0\r\nC: 4a84ad5d25f\r\nI: %d\r\n""" +mdcx_packet = """MDCX %d 14@mgw MGCP 1.0\r\nC: 4a84ad5d25f\r\nI: %d\r\nL: p:20, a:GSM-EFR, nt:IN\r\nM: recvonly\r\n\r\nv=0\r\no=- 258696477 0 IN IP4 172.16.1.107\r\ns=-\r\nc=IN IP4 172.16.1.107\r\nt=0 0\r\nm=audio 6666 RTP/AVP 127\r\na=rtpmap:127 GSM-EFR/8000/1\r\na=ptime:20\r\na=recvonly\r\nm=image 4402 udptl t38\r\na=T38FaxVersion:0\r\na=T38MaxBitRate:14400\r\n""" + +def hexdump(src, length=8): + """Recipe is from http://code.activestate.com/recipes/142812/""" + result = [] + digits = 4 if isinstance(src, unicode) else 2 + for i in xrange(0, len(src), length): + s = src[i:i+length] + hexa = b' '.join(["%0*X" % (digits, ord(x)) for x in s]) + text = b''.join([x if 0x20 <= ord(x) < 0x7F else b'.' for x in s]) + result.append( b"%04X %-*s %s" % (i, length*(digits + 1), hexa, text) ) + return b'\n'.join(result) + +server_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) +server_socket.bind(("127.0.0.1", MGCP_CALLAGENT_PORT)) +server_socket.setblocking(1) + +last_ci = 1 +def send_and_receive(packet): + global last_ci + server_socket.sendto(packet, ("127.0.0.1", MGCP_GATEWAY_PORT)) + try: + data, addr = server_socket.recvfrom(4096) + + # attempt to store the CI of the response + list = data.split("\n") + for item in list: + if item.startswith("I: "): + last_ci = int(item[3:]) + + print hexdump(data), addr + except socket.error, e: + print e + pass + +def generate_tid(): + import random + return random.randint(0, 65123) + + + +while True: + send_and_receive(audit_packet % generate_tid()) + send_and_receive(crcx_packet % generate_tid() ) + send_and_receive(mdcx_packet % (generate_tid(), last_ci)) + send_and_receive(dlcx_packet % (generate_tid(), last_ci)) + + time.sleep(3) |