NDN Video Streaming over QUIC https://yoursunny.com/t/2021/NDN-video-QUIC/

.gitignore

*.mmdb
*.ndjson
.vscode
__pycache__

README.md

NDN Video Streaming over QUIC

This gist contains code and input data from blog article NDN Video Streaming over QUIC.

To run this script:

1. pipenv install
2. Download MaxMind GeoLite2-ASN.mmdb and GeoLite2-City.mmdb
3. ./process.sh

decode.py

#!/usr/bin/python
import datetime
import ipaddress
import json
import sys
import urllib.parse

import geoip2.database
import ndjson

geoip2asn = geoip2.database.Reader("GeoLite2-ASN.mmdb")
geoip2city = geoip2.database.Reader("GeoLite2-City.mmdb")
writer = ndjson.writer(sys.stdout)
date0 = datetime.datetime(
    2021, 2, 12, tzinfo=datetime.timezone.utc).timestamp()
date1 = datetime.datetime(
    2021, 3, 14, tzinfo=datetime.timezone.utc).timestamp()

for j in ndjson.reader(sys.stdin):
    try:
        r = json.loads(urllib.parse.unquote(j["request"]["uri"][1:]))
        if j["ts"] < date0 or j["ts"] >= date1:
            continue
        r["ts"] = j["ts"]

        ip = urllib.parse.urlsplit("//" + j["request"]["remote_addr"]).hostname
        subnet = ipaddress.IPv4Network((ip, 24), strict=False)
        asn = geoip2asn.asn(ip)
        city = geoip2city.city(ip)
        r["ip"] = str(subnet.network_address)
        r["asn"] = asn.autonomous_system_number
        r["location"] = [city.location.longitude, city.location.latitude]
        r["city_accuracy"] = city.city.geoname_id is not None
        r["country"] = city.country.iso_code
        r["continent"] = city.continent.code

        writer.writerow(r)
    except Exception:
        pass

group.py

#!/usr/bin/python
import sys
from collections import defaultdict
from typing import Any, Dict, List, Set

import ndjson
from ndn.encoding.name import Name

from testbed import find_router

Record = Dict[str, Any]


class Video(dict):
    def __init__(self, name: Name.FormalName):
        self.name = name
        self["name"] = Name.to_str(name)
        self["fetch"] = []
        self["playback"] = []

    def add_fetch_record(self, j: Record):
        j["n"] = Name.to_str(Name.from_str(j["n"])[len(self.name):])
        self["fetch"].append(j)

    def add_playback_record(self, j: Record):
        del j["n"]
        self["playback"].append(j)


class Session(dict):
    SESS_KEYS = ["sess", "site", "remote", "ip", "asn",
                 "location", "city_accuracy", "country", "continent"]

    def __init__(self):
        self.fetch: List[Record] = []
        self.playback: List[Record] = []

    def add_record(self, j: Record):
        for KEY in Session.SESS_KEYS:
            self[KEY] = j.pop(KEY, None)
        if j["a"] == "P":
            del j["a"]
            self.playback.append(j)
        else:
            self.fetch.append(j)

    def tag_router(self):
        router = find_router(self["remote"])
        self["router"] = router
        self["router_dist"] = None if router is None \
            else router.geodistance(self["location"])

    def bin_videos(self):
        videos: Dict[bytes, Video] = dict()
        unaccounted: List[Record] = []
        for j in self.playback:
            name = Name.from_str(j["n"])[:-1]
            video = videos.setdefault(Name.to_bytes(name), Video(name))
            video.add_playback_record(j)
        for j in self.fetch:
            name = Name.from_str(j["n"])
            found = False
            for video in videos.values():
                if Name.is_prefix(video.name, name):
                    video.add_fetch_record(j)
                    found = True
                    break
            if not found:
                unaccounted.append(j)
        self["V"] = list(videos.values())
        self["F"] = unaccounted


sessions: defaultdict[str, Session] = defaultdict(lambda: Session())

for j in ndjson.reader(sys.stdin):
    sessions[j["sess"]].add_record(j)

for s in sessions.values():
    s.tag_router()
    s.bin_videos()

ndjson.dump(sessions.values(), sys.stdout)

Pipfile

[[source]]
url = "https://pypi.org/simple"
verify_ssl = true
name = "pypi"

[pipenv]
allow_prereleases = true

[packages]
geoip2 = "~=4.1.0"
geopy = "~=2.1.0"
ndjson = "~=0.3.1"
python-ndn = "==0.3a1.post1"

[dev-packages]
autopep8 = "*"
isort = "*"

[requires]
python_version = "3.9"

[scripts]
lint = "bash -c \"autopep8 -i *.py && isort *.py\""

Pipfile.lock

{
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}

ndnts-video-beacon-2021-03-15T22-16-47.127.log.gz

process.sh

testbed-nodes.json

testbed.py

worker.js