louissobel / peerstreamer

Peerstreamer

peer to peer fast streaming using node.js

• you need libzmq
• python zerorpc

Then, npm install will install the dependencies listed in package.json

Setting Up

this will all be described on one machine, but works equally well on multiple machines

1. First, you need a video source

   • create a video database: mkdir video_data
   • add a file: bin/split_video -d video_data -s $MY_AWESOME_MOVIE -c 1m -f myawesomemovie
   • run the video source: node node.js --name source --port 7999 --videodatabase video_data --ip 0.0.0.0

2. Check that you can stream from this source:

   • node video_streamer.js --source tcp://0.0.0.0:7999 --filename myawesomemovie --interval 100

3. Add nodes:

   • node node.js \
     --name <node name, must be unique for nodes sharing a master> \
     --port <what port should this node listen on> \
     --ip   <what is the ip address of this node> \
     --chunkdirectory <where should this nodes ChunkStore persist?> \
     --master <full address of master> \
     --supermaster <full address of supermaster, if one is setup> \
     

Example:

• video source: node node.js --name source --port 7999 --videodatabase video_data --ip 0.0.0.0

• make chunk directories: mkdir chunks/mit chunks/harvard chunks/ben chunks/alyssa chunks/john chunks/lawrence

• level 1 node (1): node node.js --name mit --port 8000 --ip 0.0.0.0 --chunkdirectory chunks/mit --master tcp://0.0.0.0:7999

• level 1 node (2): node node.js --name harvard --port 8001 --ip 0.0.0.0 --chunkdirectory chunks/harvard --master tcp://0.0.0.0:7999

• level 2 node (1): node node.js --name ben --port 8002 --ip 0.0.0.0 --chunkdirectory chunks/ben --master tcp://0.0.0.0:8000 --supermaster tcp://0.0.0.0:7999

• level 2 node (2): node node.js --name alyssa --port 8002 --ip 0.0.0.0 --chunkdirectory chunks/ben --master tcp://0.0.0.0:8000 --supermaster tcp://0.0.0.0:7999

• level 2 node (3): node node.js --name john --port 8002 --ip 0.0.0.0 --chunkdirectory chunks/john --master tcp://0.0.0.0:8001 --supermaster tcp://0.0.0.0:7999

• level 2 node (4): node node.js --name lawrence --port 8002 --ip 0.0.0.0 --chunkdirectory chunks/lawrence --master tcp://0.0.0.0:8001 --supermaster tcp://0.0.0.0:7999

• Then use video_streamer.js to stream from any of them. They will cooperate, sharing among peers when possible.