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|
//+build go1.12,linux
package vsock_test
import (
"fmt"
"io"
"net"
"sync"
"testing"
"time"
"github.com/google/go-cmp/cmp"
"github.com/mdlayher/vsock"
"github.com/mdlayher/vsock/internal/vsutil"
"golang.org/x/sys/unix"
)
func TestIntegrationListenerUnblockAcceptTimeout(t *testing.T) {
l, done := newListener(t)
defer done()
if err := l.SetDeadline(time.Now().Add(100 * time.Millisecond)); err != nil {
t.Fatalf("failed to set listener deadline: %v", err)
}
_, err := l.Accept()
if err == nil {
t.Fatal("expected an error, but none occurred")
}
if nerr, ok := err.(net.Error); !ok || (ok && !nerr.Temporary()) {
t.Errorf("expected temporary network error, but got: %#v", err)
}
}
func TestIntegrationConnShutdown(t *testing.T) {
vsutil.SkipHostIntegration(t)
// This functionality is proposed for inclusion in x/net/nettest, and should
// be removed from here if the proposal is accepted. See:
// https://github.com/golang/go/issues/31033.
timer := time.AfterFunc(10*time.Second, func() {
panic("test took too long")
})
defer timer.Stop()
mp := makeVSockPipe()
c1, c2, stop, err := mp()
if err != nil {
t.Fatalf("failed to make pipe: %v", err)
}
defer stop()
vc1, vc2 := c1.(*vsock.Conn), c2.(*vsock.Conn)
var wg sync.WaitGroup
wg.Add(1)
defer wg.Wait()
// Perform CloseRead/CloseWrite in lock-step.
var (
readClosed = make(chan struct{})
writeClosed = make(chan struct{})
)
go func() {
defer wg.Done()
b := make([]byte, 8)
if _, err := io.ReadFull(vc2, b); err != nil {
panicf("failed to vc2.Read: %v", err)
}
if err := vc2.CloseRead(); err != nil {
panicf("failed to vc2.CloseRead: %v", err)
}
close(readClosed)
// Any further read should return io.EOF.
<-writeClosed
if _, err := io.ReadFull(vc2, b); err != io.EOF {
panicf("expected vc2.Read EOF, but got: %v", err)
}
if err := vc2.CloseWrite(); err != nil {
panicf("failed to vc2.CloseWrite: %v", err)
}
}()
b := make([]byte, 8)
if _, err := vc1.Write(b); err != nil {
t.Fatalf("failed to vc1.Write: %v", err)
}
// Any write to a read-closed connection should return EPIPE.
<-readClosed
if _, err := vc1.Write(b); !isBrokenPipe(err) {
t.Fatalf("expected vc1.Write broken pipe, but got: %v", err)
}
if err := vc1.CloseWrite(); err != nil {
t.Fatalf("failed to vc1.CloseWrite: %v", err)
}
close(writeClosed)
// Any further read should return io.EOF after the other end write-closes.
if _, err := io.ReadFull(vc1, b); err != io.EOF {
panicf("expected vc1.Read EOF, but got: %v", err)
}
}
func TestIntegrationConnSyscallConn(t *testing.T) {
vsutil.SkipHostIntegration(t)
mp := makeVSockPipe()
c, _, stop, err := mp()
if err != nil {
t.Fatalf("failed to make pipe: %v", err)
}
defer stop()
rc, err := c.(*vsock.Conn).SyscallConn()
if err != nil {
t.Fatalf("failed to syscallconn: %v", err)
}
// Greatly reduce the size of the socket buffer.
const (
size uint64 = 64
name = unix.SO_VM_SOCKETS_BUFFER_MAX_SIZE
)
err = rc.Control(func(fd uintptr) {
err := unix.SetsockoptUint64(int(fd), unix.AF_VSOCK, name, size)
if err != nil {
t.Fatalf("failed to setsockopt: %v", err)
}
out, err := unix.GetsockoptUint64(int(fd), unix.AF_VSOCK, name)
if err != nil {
t.Fatalf("failed to getsockopt: %v", err)
}
if diff := cmp.Diff(size, out); diff != "" {
t.Fatalf("unexpected socket buffer size (-want +got):\n%s", diff)
}
})
if err != nil {
t.Fatalf("failed to control: %v", err)
}
}
func isBrokenPipe(err error) bool {
if err == nil {
return false
}
nerr, ok := err.(*net.OpError)
if !ok {
return false
}
return nerr.Err == unix.EPIPE
}
func panicf(format string, a ...interface{}) {
panic(fmt.Sprintf(format, a...))
}
|
