GenMyPtyHandlerId generates a random session ID string.

WaitForTerminal is called from apihandler.handleAttach as a goroutine Waits for the SockJS connection to be opened by the client the session to be bound in handleMyPtyHandler.

NamespaceController 项目空间.

SessionMap stores a map of all MyPtyHandler objects and a lock to avoid concurrent conflict.

TerminalMessage is the messaging protocol between ShellController and MyPtyHandler.

HandleExecShell Handles execute shell API call.

PtyHandler is what remotecommand expects from a pty.