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//go:build linux
// +build linux
/*
*
* Copyright 2018 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// The test in this file should be run in an environment that has go1.10 or later,
// as the function SyscallConn() (required to get socket option) was introduced
// to net.TCPListener in go1.10.
package channelz_test
import (
"net"
"reflect"
"syscall"
"testing"
"golang.org/x/sys/unix"
"google.golang.org/grpc/internal/channelz"
"google.golang.org/grpc/internal/grpctest"
)
type s struct {
grpctest.Tester
}
func Test(t *testing.T) {
grpctest.RunSubTests(t, s{})
}
func (s) TestGetSocketOpt(t *testing.T) {
network, addr := "tcp", ":0"
ln, err := net.Listen(network, addr)
if err != nil {
t.Fatalf("net.Listen(%s,%s) failed with err: %v", network, addr, err)
}
defer ln.Close()
go func() {
ln.Accept()
}()
conn, _ := net.Dial(network, ln.Addr().String())
defer conn.Close()
tcpc := conn.(*net.TCPConn)
raw, err := tcpc.SyscallConn()
if err != nil {
t.Fatalf("SyscallConn() failed due to %v", err)
}
l := &unix.Linger{Onoff: 1, Linger: 5}
recvTimout := &unix.Timeval{Sec: 100}
sendTimeout := &unix.Timeval{Sec: 8888}
raw.Control(func(fd uintptr) {
err := unix.SetsockoptLinger(int(fd), syscall.SOL_SOCKET, syscall.SO_LINGER, l)
if err != nil {
t.Fatalf("failed to SetsockoptLinger(%v,%v,%v,%v) due to %v", int(fd), syscall.SOL_SOCKET, syscall.SO_LINGER, l, err)
}
err = unix.SetsockoptTimeval(int(fd), syscall.SOL_SOCKET, syscall.SO_RCVTIMEO, recvTimout)
if err != nil {
t.Fatalf("failed to SetsockoptTimeval(%v,%v,%v,%v) due to %v", int(fd), syscall.SOL_SOCKET, syscall.SO_RCVTIMEO, recvTimout, err)
}
err = unix.SetsockoptTimeval(int(fd), syscall.SOL_SOCKET, syscall.SO_SNDTIMEO, sendTimeout)
if err != nil {
t.Fatalf("failed to SetsockoptTimeval(%v,%v,%v,%v) due to %v", int(fd), syscall.SOL_SOCKET, syscall.SO_SNDTIMEO, sendTimeout, err)
}
})
sktopt := channelz.GetSocketOption(conn)
if !reflect.DeepEqual(sktopt.Linger, l) {
t.Fatalf("get socket option linger, want: %v, got %v", l, sktopt.Linger)
}
if !reflect.DeepEqual(sktopt.RecvTimeout, recvTimout) {
t.Logf("get socket option recv timeout, want: %v, got %v, may be caused by system allowing non or partial setting of this value", recvTimout, sktopt.RecvTimeout)
}
if !reflect.DeepEqual(sktopt.SendTimeout, sendTimeout) {
t.Logf("get socket option send timeout, want: %v, got %v, may be caused by system allowing non or partial setting of this value", sendTimeout, sktopt.SendTimeout)
}
if sktopt == nil || sktopt.TCPInfo != nil && sktopt.TCPInfo.State != 1 {
t.Fatalf("TCPInfo.State want 1 (TCP_ESTABLISHED), got %v", sktopt)
}
sktopt = channelz.GetSocketOption(ln)
if sktopt == nil || sktopt.TCPInfo == nil || sktopt.TCPInfo.State != 10 {
t.Fatalf("TCPInfo.State want 10 (TCP_LISTEN), got %v", sktopt)
}
}
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