NewHub creates a hub.

WithAfterDeleteClient sets f to h's afterDeleteClient.

WithAfterStoreClient sets f to h's afterStoreClient.

WithHubAddr sets addr to h's hubAddr.

WithHubPath sets path to h's hubPath.

WithID sets id to c's ID.

WithMessageHandler sets h to c.

WithReaderOpt sets ro to c.

WithRouter sets r to h's router.

WithUpgradeCheckOrigin sets f to u's CheckOrigin.

WithUserGroupID sets id to c's userGroupID.

WithUserID sets id to c's userID.

Client starts two go-routines to write and read messages upon creation with NewClientCongfigured or NewClient function.

Hub maintains the set of active clients and broadcasts messages to the clients.

NopRouter.

ClientOption is an interface with apply method.

HubOption is an interface with apply method.

MessageHandler handles data read from r with ReaderOption opts.

Router is an interface with methods that stores and deletes clients and their locations to external storages.

UpgraderOption is an interface with apply method.

ClientOptionFunc wraps a function to conforms to ClientOption interface.

HubOptionFunc wraps a function to conforms to HubOption interface.

UpgraderOptionFunc wraps a function to conforms to ClientOption interface.