var golang.org/x/net/http2.errPrefaceTimeout
3 uses
golang.org/x/net/http2 (current package)
server.go#L799: if err == io.EOF || err == io.ErrUnexpectedEOF || isClosedConnError(err) || err == errPrefaceTimeout {
server.go#L1123: var errPrefaceTimeout = errors.New("timeout waiting for client preface")
server.go#L1148: return errPrefaceTimeout
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