本文整理匯總了Golang中code/google/com/p/go/net/ipv4.PacketConn.ReadFrom方法的典型用法代碼示例。如果您正苦於以下問題：Golang PacketConn.ReadFrom方法的具體用法？Golang PacketConn.ReadFrom怎麽用？Golang PacketConn.ReadFrom使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類code/google/com/p/go/net/ipv4.PacketConn的用法示例。
在下文中一共展示了PacketConn.ReadFrom方法的3個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Golang代碼示例。
示例1: runPayloadTransponder
// runPayloadTransponder transmits IPv4 datagram payloads to the
// loopback address or interface and captures the loopback'd datagram
// payloads.
func runPayloadTransponder(t *testing.T, c *ipv4.PacketConn, wb []byte, dst net.Addr) {
cf := ipv4.FlagTTL | ipv4.FlagDst | ipv4.FlagInterface
rb := make([]byte, 1500)
for i, toggle := range []bool{true, false, true} {
if err := c.SetControlMessage(cf, toggle); err != nil {
t.Fatalf("ipv4.PacketConn.SetControlMessage failed: %v", err)
}
c.SetTOS(i + 1)
var ip net.IP
switch v := dst.(type) {
case *net.UDPAddr:
ip = v.IP
case *net.IPAddr:
ip = v.IP
}
if ip.IsMulticast() {
c.SetMulticastTTL(i + 1)
} else {
c.SetTTL(i + 1)
}
c.SetDeadline(time.Now().Add(100 * time.Millisecond))
if _, err := c.WriteTo(wb, nil, dst); err != nil {
t.Fatalf("ipv4.PacketConn.WriteTo failed: %v", err)
}
_, cm, _, err := c.ReadFrom(rb)
if err != nil {
t.Fatalf("ipv4.PacketConn.ReadFrom failed: %v", err)
}
t.Logf("rcvd cmsg: %v", cm)
}
}示例2: writeThenReadPayload
// writeThenReadPayload transmits IPv4 datagram payloads to the
// loopback address or interface and captures the loopback'd datagram
// payloads.
func writeThenReadPayload(t *testing.T, i int, c *ipv4.PacketConn, wb []byte, dst net.Addr) []byte {
rb := make([]byte, 1500)
c.SetTOS(i + 1)
var ip net.IP
switch v := dst.(type) {
case *net.UDPAddr:
ip = v.IP
case *net.IPAddr:
ip = v.IP
}
if ip.IsMulticast() {
c.SetMulticastTTL(i + 1)
} else {
c.SetTTL(i + 1)
}
c.SetDeadline(time.Now().Add(100 * time.Millisecond))
if _, err := c.WriteTo(wb, nil, dst); err != nil {
t.Fatalf("ipv4.PacketConn.WriteTo failed: %v", err)
}
n, cm, _, err := c.ReadFrom(rb)
if err != nil {
t.Fatalf("ipv4.PacketConn.ReadFrom failed: %v", err)
}
t.Logf("rcvd cmsg: %v", cm)
return rb[:n]
}示例3: benchmarkReadWriteIPv4UDP
func benchmarkReadWriteIPv4UDP(b *testing.B, p *ipv4.PacketConn, wb, rb []byte, dst net.Addr, ifi *net.Interface) {
cm := ipv4.ControlMessage{TTL: 1}
if ifi != nil {
cm.IfIndex = ifi.Index
}
if _, err := p.WriteTo(wb, &cm, dst); err != nil {
b.Fatalf("ipv4.PacketConn.WriteTo failed: %v", err)
}
if _, _, _, err := p.ReadFrom(rb); err != nil {
b.Fatalf("ipv4.PacketConn.ReadFrom failed: %v", err)
}
}