licode room publish过程解析

connection._createWrtc（addon）

一个erizoJS.client有多个connections（每个cilent对应一个浏览器，每个浏览器publish一路，subscribe多路，每一路是一个connection）每个connection有一个webrtcconncetion，每个conncetion有多个mediaStreams（暂时不知道为什么）每个publisher有一个connection，每个publisher有一个muxer（一对多转发）每个erizoJS对应一个erizoJScontroller，由erizoJScontroller接收rpc消息（pubLish、subscribe等）

erizocontroller_server

webrtcstack.createoffer

responseid:streamIderizoId

erizocontroller

nuve_server

callbackoffer body

webrtcconnection.init解析：

erizoJS

this.muxer = new addon.OneToManyProcessor()

JS_publisher

callrpc'ErizoAgent'createErizoJS

createoffersendonlystreamId

addPublisherclientidstreamid(由client生成)

stream init

client.getOrCreateConnectionconnect.id: '${client.id}_自增ID'

roomcontroller

client/channel

onSignalingMessagemsg.type: 'offer'

publishers[streamId] = erizoId;subscribers[streamId] = [];

nuve

nuve_resource_db

emit 'launch-erizo'

emit

监听点对点连接client的消息：signaling_message、publish、subscribe、updateStreamAttributes、unpublish、unsubscribe

callback{type: 'ready'}

erizoJS_server

webrtcstack.processAnswer

signaling_message_erizo

id（erizoJS_id）是由erizoAgent.erizolist随机生成的子进程erizoProcess启动erizoJS

接收rpc命令

CONN_SDP_PROCESSED

room.publish

建立websocket连接

erizoAgent

basic_client

创建webrtc的peerconncetion

emit 'access-accepted'

new Clientid:clientId

populateStreamFunctionscreateLocalStreamErizoConnection

processSignaling'ErizoJS_jsID'clinetIdstreamIdmsg

rpc callback返回erizoId(JS_id)agentiderizo.position(暂时不知道什么作用)

getusermedia

processSignalingclientidstreamIDmsg

onAddStream

rpc bindbroadcast 'ErizoJS''ErizoJS_'+id

erizoJScontroller

client

JS_clientJS_connection

callrpc'initializing'

room.sendMessage('onAddStream'

new channelnew client点对点信令连接

erizoconnection

room

createSdpConstraints

erizo_client

call rpc'ErizoJS_' + erizoID'addPublisher'

JS_subscriber