path_test.go

Documentation: golang.org/x/net/quic

     1  // Copyright 2023 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  //go:build go1.21
     6  
     7  package quic
     8  
     9  import (
    10  	"testing"
    11  )
    12  
    13  func TestPathChallengeReceived(t *testing.T) {
    14  	for _, test := range []struct {
    15  		name        string
    16  		padTo       int
    17  		wantPadding int
    18  	}{{
    19  		name:        "unexpanded",
    20  		padTo:       0,
    21  		wantPadding: 0,
    22  	}, {
    23  		name:        "expanded",
    24  		padTo:       1200,
    25  		wantPadding: 1200,
    26  	}} {
    27  		// "The recipient of [a PATH_CHALLENGE] frame MUST generate
    28  		// a PATH_RESPONSE frame [...] containing the same Data value."
    29  		// https://www.rfc-editor.org/rfc/rfc9000.html#section-19.17-7
    30  		tc := newTestConn(t, clientSide)
    31  		tc.handshake()
    32  		tc.ignoreFrame(frameTypeAck)
    33  		data := pathChallengeData{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef}
    34  		tc.writeFrames(packetType1RTT, debugFramePathChallenge{
    35  			data: data,
    36  		}, debugFramePadding{
    37  			to: test.padTo,
    38  		})
    39  		tc.wantFrame("response to PATH_CHALLENGE",
    40  			packetType1RTT, debugFramePathResponse{
    41  				data: data,
    42  			})
    43  		if got, want := tc.lastDatagram.paddedSize, test.wantPadding; got != want {
    44  			t.Errorf("PATH_RESPONSE expanded to %v bytes, want %v", got, want)
    45  		}
    46  		tc.wantIdle("connection is idle")
    47  	}
    48  }
    49  
    50  func TestPathResponseMismatchReceived(t *testing.T) {
    51  	// "If the content of a PATH_RESPONSE frame does not match the content of
    52  	// a PATH_CHALLENGE frame previously sent by the endpoint,
    53  	// the endpoint MAY generate a connection error of type PROTOCOL_VIOLATION."
    54  	// https://www.rfc-editor.org/rfc/rfc9000.html#section-19.18-4
    55  	tc := newTestConn(t, clientSide)
    56  	tc.handshake()
    57  	tc.ignoreFrame(frameTypeAck)
    58  	tc.writeFrames(packetType1RTT, debugFramePathResponse{
    59  		data: pathChallengeData{},
    60  	})
    61  	tc.wantFrame("invalid PATH_RESPONSE causes the connection to close",
    62  		packetType1RTT, debugFrameConnectionCloseTransport{
    63  			code: errProtocolViolation,
    64  		},
    65  	)
    66  }
    67
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