79 lines
2.7 KiB
Go
79 lines
2.7 KiB
Go
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// Copyright 2019 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package injectable
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import (
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"bytes"
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"net"
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"os"
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"syscall"
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"testing"
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"gvisor.googlesource.com/gvisor/pkg/tcpip"
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"gvisor.googlesource.com/gvisor/pkg/tcpip/buffer"
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"gvisor.googlesource.com/gvisor/pkg/tcpip/link/fdbased"
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"gvisor.googlesource.com/gvisor/pkg/tcpip/network/ipv4"
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"gvisor.googlesource.com/gvisor/pkg/tcpip/stack"
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)
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func TestMuxedEndpointDispatch(t *testing.T) {
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endpoint, sock, dstIP := makeMuxedTestEndpoint(t)
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hdr := buffer.NewPrependable(1)
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hdr.Prepend(1)[0] = 0xFA
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packetRoute := stack.Route{RemoteAddress: dstIP}
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endpoint.WritePacket(&packetRoute, hdr,
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buffer.NewViewFromBytes([]byte{0xFB}).ToVectorisedView(), ipv4.ProtocolNumber)
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buf := make([]byte, 6500)
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bytesRead, err := sock.Read(buf)
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if err != nil {
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t.Fatalf("Unable to read from socketpair: %v", err)
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}
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if got, want := buf[:bytesRead], []byte{0xFA, 0xFB}; !bytes.Equal(got, want) {
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t.Fatalf("Read %v from the socketpair, wanted %v", got, want)
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}
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}
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func TestMuxedEndpointDispatchHdrOnly(t *testing.T) {
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endpoint, sock, dstIP := makeMuxedTestEndpoint(t)
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hdr := buffer.NewPrependable(1)
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hdr.Prepend(1)[0] = 0xFA
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packetRoute := stack.Route{RemoteAddress: dstIP}
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endpoint.WritePacket(&packetRoute, hdr,
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buffer.NewView(0).ToVectorisedView(), ipv4.ProtocolNumber)
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buf := make([]byte, 6500)
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bytesRead, err := sock.Read(buf)
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if err != nil {
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t.Fatalf("Unable to read from socketpair: %v", err)
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}
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if got, want := buf[:bytesRead], []byte{0xFA}; !bytes.Equal(got, want) {
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t.Fatalf("Read %v from the socketpair, wanted %v", got, want)
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}
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}
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func makeMuxedTestEndpoint(t *testing.T) (*MuxedInjectableEndpoint, *os.File, tcpip.Address) {
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dstIP := tcpip.Address(net.ParseIP("1.2.3.4").To4())
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pair, err := syscall.Socketpair(syscall.AF_UNIX,
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syscall.SOCK_SEQPACKET|syscall.SOCK_CLOEXEC|syscall.SOCK_NONBLOCK, 0)
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if err != nil {
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t.Fatal("Failed to create socket pair:", err)
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}
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_, underlyingEndpoint := fdbased.NewInjectable(pair[1], 6500)
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routes := map[tcpip.Address]stack.InjectableLinkEndpoint{dstIP: underlyingEndpoint}
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_, endpoint := NewMuxedInjectableEndpoint(routes, 6500)
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return endpoint, os.NewFile(uintptr(pair[0]), "test route end"), dstIP
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}
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