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TIBCO Rendezvous® 8.8.0

# Behavioral Differences

Secure daemons exhibit slight differences in behavior from their non-secure counterparts. This section summarizes those differences.

## Automatic Start and Stop

`rvd` can start either automatically or by explicit command. In contrast, administrators must start `rvsd` by explicit command.

`rvd` can stop automatically after an interval in which it has no clients (see rvd, and -no-permanent). In contrast, `rvsd` does not stop automatically.

## Subject Gating

Secure daemons are silent when subject gating parameters preclude send or listen operations:

| • | Subjects authorized for sending can flow from client transports out to local networks.

A client transport that sends a message with an unauthorized subject does not receive any error indication; instead, the secure daemon silently discards the message.

| • | Subjects authorized for listening can flow to client transports from local networks.

A client transport that creates a listener with an unauthorized subject does not receive any error indication—but the resulting listener object never receives any messages.

## Default Network and Service

Secure daemons and non-secure daemons behave differently when a client transport specifies a default value (that is, null) for its network or service parameter. Non-secure daemons use external defaults; see Specifying the UDP Service and Constructing the Network Parameter. In contrast, secure daemons use internal defaults—which you can configure using the browser administration interface; see Default Network and Service.

## Browser Connections

Secure daemons automatically open both HTTP and HTTPS ports for browser administration interface connections—unless you specify otherwise. When an HTTPS connection is available, the daemon uses it; that is, whenever possible, it transfers non-secure HTTP communication over to its secure HTTPS connection.

You can block the secure HTTPS connection by specifying `-http-only`, which leaves only the non-secure HTTP connection.

You can block all browser administration interface connections by specifying `-no-http`.

## See Also

Network and Service Authorization

Default Network and Service

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