Package org.eclipse.jetty.io

Interface Connection.UpgradeFrom

All Known Implementing Classes:

HttpConnection, HttpConnectionOverHTTP

Enclosing interface:

Connection

public static interface Connection.UpgradeFrom

Connection implementations implement this interface when they can upgrade from the protocol they speak (for example HTTP/1.1) to a different protocol (e.g. HTTP/2).

See Also:

• EndPoint.upgrade(Connection)
• Connection.UpgradeTo

Method Summary

Modifier and Type	Method	Description
ByteBuffer	onUpgradeFrom()	Invoked during an upgrade to produce a buffer containing bytes that have not been consumed by this connection, and that must be consumed by the upgrade-to connection.

Method Details

onUpgradeFrom

ByteBuffer onUpgradeFrom()

Invoked during an upgrade to produce a buffer containing bytes that have not been consumed by this connection, and that must be consumed by the upgrade-to connection.

Returns:

a buffer of unconsumed bytes to pass to the upgrade-to connection. The buffer does not belong to any pool and should be discarded after having consumed its bytes. The returned buffer may be null if there are no unconsumed bytes.