# audio_app

**Repository Path**: droshua/audio_app

## Basic Information

- **Project Name**: audio_app
- **Description**: 点对点加速的语音通话
- **Primary Language**: Unknown
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 1
- **Forks**: 1
- **Created**: 2024-12-04
- **Last Updated**: 2025-03-09

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

## Server时序图

```mermaid
sequenceDiagram
	participant u1 as user1
	participant s as server
	participant u2 as user2
	
	activate u1
	u1 ->> + s : login : {userId:0xFFFFFFFF, user1IPList}, timeout 3s
	s ->> +s : check same IP port
	s -->> - u1 : login success : {userId:0x**, userToken, allUserIPList}
	deactivate u1
	
	loop every 30 mins
		activate u1
		u1 ->> u1 : get user1 own IP List
		deactivate u1
		alt user1IPListChanged
			u1 ->> + s : update userIpList : {user1IPList}
			s ->> s : process ip changed
			s ->> - u2 : user1IPList
		end
	end
	
	
	
	loop every 2s
		s ->> s : check user is alive
	end
	loop every 500ms
		u1 ->> + s : heartbeat : {user1Id, user1Token}
		s ->> - s : process heartbeat
	end
	
	activate u1
	u1 ->> + s : call request : {{userId, userToken}, targetUserId, digHoleToken}
	u1 ->>  u1 : recv server reply, timeout 1s
	s ->> s : set u2 unavailable, set u1 unavailable
	s -->> u1 : {isAvailable[, digHoleToken, sessionId]}
	deactivate u1
	
	
	alt user2 available
		s ->>  + u2 : {srcUserId, digHoleToken, sessionId}
		s ->> s : waiting u2 response, timeout 2s
		u2 -->> s : response, to tell server that u2 is notified
		s ->> u1 : if u2 is notified
		alt u2 is notified
			loop each u2 ip
				u1 ->>  u2 : dig hole to user2ip[i] {user1Id, digHoleToken}
			end
		end
	end

	alt user2 refused
		u2 -->> + s : refuse call : {user2Id, user2Token, refuse, sessionId}
		s ->> s : set u2 available, set u1 available
		s ->> - u1 : response call : {user2Id, refuse, sessionId}, timeout 1s
		u1 -->> s : ok : {user1Id, user1Token}
	else user accepted
		u2 ->> + u1 : dig hole : {ip, port, digHoleToken}
		u2 -->> + s : {userId, userToken, accept, sessionId}, timeout 1s, waiting for u1
		s ->> - u1 : notify user1 : {user2Id, accept, sessionId}
		u1 -->> u2 : ok : {user1Id, sessionId}
		loop till stop session
			par 并行
				u1 ->> + u2 : sound bytes stream
				u2 ->> - u2 : play sound
			and
				u2 ->> + u1 : sound bytes stream
				u1 ->> - u1 : play sound
			end
		end
		loop session heartbeat
			u1 ->> s : session heartbeat{user1Id, user1token, sessionId} every 300ms
			s ->> s: set u1 alive {user1Id, sessionId}
			u2 ->> s : session heartbeat{user2Id, user2token, sessionId} every 300ms
			s ->> s: set u2 alive {user2Id, sessionId}
		end
	end
	
		
	u1 ->> + s : leave session : {user1Id, user1Token, sessionId}, timeout 1s
	s -->> - u1 : confirm leave : {sessionId}
	s ->> + u2 : leave session : {sessionId, user1Id}, timeout 1s
	u2 -->> - s : confirm leave : {sessionId, user2Id}
	s ->> + s : delete session : {sessionId}

```