MT#55283 add NG load tester

Change-Id: I8fed6ffad37adef70eddd5e96366d803f1139771

utils/ng-load-tester.py

@@ -0,0 +1,81 @@
+import base64
+import fastbencode
+import json
+import random
+import socket
+
+
+def conv(e):
+    if type(e) is str:
+        return bytes(e, "ASCII")
+    if type(e) is dict:
+        n = {}
+        for k, v in e.items():
+            n[bytes(k, "ASCII")] = conv(v)
+        return n
+    if type(e) is list:
+        n = []
+        for v in e:
+            n.append(conv(v))
+        return n
+    return e
+
+
+addr = "127.0.0.1"
+port = 2223
+
+fmt = "bencode"
+iters = 200000
+cmd = "statistics"
+
+sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+
+if cmd == "answer":
+    msg = {
+        "command": "answer",
+        "call-id": "foo",
+        "from-tag": "bar",
+        "to-tag": "meh",
+        "sdp": """
+    v=0
+    o=- 1695296331 1695296331 IN IP4 192.168.1.202
+    s=-
+    t=0 0
+    c=IN IP4 192.168.1.202
+    m=audio 45825 UDP/TLS/RTP/SAVPF 0 8 101
+    a=setup:active
+    a=fingerprint:sha-256 49:05:98:B2:15:43:1C:9C:4F:29:07:60:F8:63:77:16:80:F9:44:C0:97:8E:E5:48:D6:71:B4:03:10:85:D6:E3
+    a=rtpmap:0 PCMU/8000/1
+    a=rtpmap:8 PCMA/8000/1
+    a=rtpmap:101 telephone-event/8000
+    a=rtcp-mux
+    a=rtcprsize
+    a=sendrecv
+    """,
+        "flags": ["generate RTCP", "pad crypto", "symmetric codecs"],
+        "ICE": "remove",
+        "codec": {
+            "mask": ["opus", "PCMA", "PCMU"],
+            "transcode": ["G722", "AMR"],
+            "strip": ["AMR-WB", "EVS"],
+        },
+        "transport-protocol": "RTP/AVP",
+        "replace": ["origin"],
+        "rtcp-mux": ["demux"],
+    }
+elif cmd == "statistics":
+    msg = {"command": "statistics"}
+
+if fmt == "json":
+    enc = bytes(json.dumps(msg), "ASCII")
+elif fmt == "bencode":
+    enc = fastbencode.bencode(conv(msg))
+else:
+    raise
+
+for _ in range(iters):
+    packet = base64.b64encode(random.randbytes(6)) + b" " + enc
+    sock.sendto(packet, (addr, port))
+    sock.recvfrom(4096)
+
+print("done")