Add APIs to allow switching an HTTP1 connection to HTTP2 if H2 preface is seen#3996
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seanmonstar merged 2 commits intohyperium:masterfrom Mar 31, 2026
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The method returns true if the underlying error is a parse error caused by HTTP2 preface sent over an HTTP1 connection.
This allows the connection to be deconstructed into I/O object and some additional information, provided it hasn't yet been upgraded.
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This PR adds APIs to allows switching an HTTP1 connection to an HTTP2 connection
by a server that supports both, like
hyper_util::server::conn::auto. Notably,this is required to implement #3962.