package Ġio . lib p 2 p . core Ċ Ċ import Ġio . lib p 2 p . etc . Broadcast Channel Visitor Ċ import Ġjava . util . concurrent . Comp letableFuture Ċ Ċ /** Ċ Ġ* ĠThe Ġcentral Ġentry Ġpoint Ġfor Ġevery Ġprotocol Ġwhich Ġis Ġresponsible Ġfor Ġinitializing Ġ[ P 2 P Channel ] Ċ Ġ*/ Ċ fun Ġinterface ĠP 2 P Channel Handler < T Controller > Ġ{ ĊĊĠĠĠ Ġ/** ĊĠĠĠĠ Ġ* ĠShould Ġinitialize Ġthe Ġunderlying ĠNet ty Ġ[ io . netty . channel . Channel ] Ġ** s ynchronously ** ĊĠĠĠĠ Ġ* Ġand Ġ** on Ġthe Ġcalling Ġthread ** ĊĠĠĠĠ Ġ* ĠReturns Ġthe Ġ[ Future ] Ġwhich Ġis Ġcompleted Ġwith Ġthe Ġprotocol Ġ[ T Controller ] ĊĠĠĠĠ Ġ* Ġwhen Ġall Ġnecessary Ġprotocol Ġneg oti ations Ġare Ġdone . ĊĠĠĠĠ Ġ*/ ĊĠĠĠ Ġfun Ġinit Channel ( ch : ĠP 2 P Channel ): ĠCompletableFuture < T Controller > ĊĊĠĠĠ Ġfun Ġto Stream Handler (): ĠStream Handler < T Controller > Ġ= ĠStream Handler Ġ{ Ġstream Ġ-> Ġinit Channel ( stream ) Ġ} Ċ } Ċ Ċ fun Ġinterface ĠChannel Visitor < T Channel Ġ: ĠP 2 P Channel > Ġ{ ĊĊĠĠĠ Ġfun Ġvisit ( channel : ĠT Channel ) ĊĊĠĠĠ Ġfun Ġto Channel Handler (): ĠP 2 P Channel Handler < Unit > Ġ= ĠP 2 P Channel Handler Ġ{ ĊĠĠĠĠĠĠĠ Ġ@ Suppress (" UN CHECK ED _ CAST ") ĊĠĠĠĠĠĠĠ Ġvisit ( it Ġas ĠT Channel ) ĊĠĠĠĠĠĠĠ ĠCompletableFuture . completed Future ( Unit ) ĊĠĠĠ Ġ} ĊĊĠĠĠ Ġinterface ĠBroadcast < T Channel Ġ: ĠP 2 P Channel > Ġ: ĠChannel Visitor < T Channel >, ĠMutable List < Channel Visitor < T Channel >> ĊĊĠĠĠ Ġcompanion Ġobject Ġ{ ĊĠĠĠĠĠĠĠ Ġfun Ġ< T Channel Ġ: ĠP 2 P Channel > Ġcreate Broadcast ( var arg Ġhandlers : ĠChannel Visitor < T Channel >) Ġ= ĊĠĠĠĠĠĠĠĠĠĠĠ ĠBroadcast Channel Visitor < T Channel >(). also Ġ{ Ġit Ġ+= Ġhandlers Ġ} ĊĠĠĠ Ġ} Ċ } Ċ