88cf2ee212
Related: #3814 Motivation: To implement the support for an upgrade from cleartext HTTP/1.1 connection to cleartext HTTP/2 (h2c) connection, a user usually uses HttpServerUpgradeHandler. It does its job, but it requires a user to instantiate the UpgradeCodecs for all supported protocols upfront. It means redundancy for the connections that are not upgraded. Modifications: - Change the constructor of HttpServerUpgradeHandler - Accept UpgraceCodecFactory instead of UpgradeCodecs - The default constructor of HttpServerUpgradeHandler sets the maxContentLength to 0 now, which shouldn't be a problem because a usual upgrade request is a GET. - Update the examples accordingly Result: A user can instantiate Http2ServerUpgradeCodec and its related objects (Http2Connection, Http2FrameReader/Writer, Http2FrameListener, etc) only when necessary. |
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