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// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build go1.21
package quic
import (
"testing"
)
func TestPathChallengeReceived(t *testing.T) {
for _, test := range []struct {
name string
padTo int
wantPadding int
}{{
name: "unexpanded",
padTo: 0,
wantPadding: 0,
}, {
name: "expanded",
padTo: 1200,
wantPadding: 1200,
}} {
// "The recipient of [a PATH_CHALLENGE] frame MUST generate
// a PATH_RESPONSE frame [...] containing the same Data value."
// https://www.rfc-editor.org/rfc/rfc9000.html#section-19.17-7
tc := newTestConn(t, clientSide)
tc.handshake()
tc.ignoreFrame(frameTypeAck)
data := pathChallengeData{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef}
tc.writeFrames(packetType1RTT, debugFramePathChallenge{
data: data,
}, debugFramePadding{
to: test.padTo,
})
tc.wantFrame("response to PATH_CHALLENGE",
packetType1RTT, debugFramePathResponse{
data: data,
})
if got, want := tc.lastDatagram.paddedSize, test.wantPadding; got != want {
t.Errorf("PATH_RESPONSE expanded to %v bytes, want %v", got, want)
}
tc.wantIdle("connection is idle")
}
}
func TestPathResponseMismatchReceived(t *testing.T) {
// "If the content of a PATH_RESPONSE frame does not match the content of
// a PATH_CHALLENGE frame previously sent by the endpoint,
// the endpoint MAY generate a connection error of type PROTOCOL_VIOLATION."
// https://www.rfc-editor.org/rfc/rfc9000.html#section-19.18-4
tc := newTestConn(t, clientSide)
tc.handshake()
tc.ignoreFrame(frameTypeAck)
tc.writeFrames(packetType1RTT, debugFramePathResponse{
data: pathChallengeData{},
})
tc.wantFrame("invalid PATH_RESPONSE causes the connection to close",
packetType1RTT, debugFrameConnectionCloseTransport{
code: errProtocolViolation,
},
)
}
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