TcpClient.uml

@startuml
hide footbox
title TcpClient Start Flow

participant User
participant TcpClient
participant Connector
participant Channel
participant EventLoop
participant Poller
participant TcpConnection

User-->EventLoop:new Eventloop instance
User-->TcpClient:new client(server_ip_Port)
note right:setCallback
User->TcpClient:connect()
TcpClient->Connector:connect():
note right:new connectFd

Connector->Channel:new channel(connectFd)
note right:setCallback
Connector->Channel:enableWriting
Channel ->EventLoop:updateChannel()
EventLoop->Poller:updateChannel()
note right:add new sockfd

User->EventLoop:loop()
EventLoop->Poller:poll(): monitor IO Events
Poller-->EventLoop:ActiveChannels
note left:accepted by server

EventLoop->Channel:handleEvent
note right:dispatchEventToCallback
Channel->Connector:handleWrite()
Connector->TcpClient:newConnection()
TcpClient-->TcpConnection:new a TcpConnection
TcpClient->TcpConnection:connectEstablished()
TcpConnection->Channel:enableReading()
note left:add fd to Poller




@enduml