mirror of
https://github.com/traefik/traefik.git
synced 2025-10-31 08:21:27 +01:00
112 lines
2.2 KiB
Go
112 lines
2.2 KiB
Go
package udp
|
||
|
||
import (
|
||
"crypto/rand"
|
||
"net"
|
||
"runtime"
|
||
"testing"
|
||
"time"
|
||
|
||
"github.com/stretchr/testify/assert"
|
||
"github.com/stretchr/testify/require"
|
||
)
|
||
|
||
func TestProxy_ServeUDP(t *testing.T) {
|
||
backendAddr := ":8081"
|
||
go newServer(t, backendAddr, HandlerFunc(func(conn *Conn) {
|
||
for {
|
||
b := make([]byte, 1024*1024)
|
||
n, err := conn.Read(b)
|
||
require.NoError(t, err)
|
||
|
||
_, err = conn.Write(b[:n])
|
||
require.NoError(t, err)
|
||
}
|
||
}))
|
||
|
||
proxy, err := NewProxy(backendAddr)
|
||
require.NoError(t, err)
|
||
|
||
proxyAddr := ":8080"
|
||
go newServer(t, proxyAddr, proxy)
|
||
|
||
time.Sleep(time.Second)
|
||
|
||
udpConn, err := net.Dial("udp", proxyAddr)
|
||
require.NoError(t, err)
|
||
|
||
_, err = udpConn.Write([]byte("DATAWRITE"))
|
||
require.NoError(t, err)
|
||
|
||
b := make([]byte, 1024*1024)
|
||
n, err := udpConn.Read(b)
|
||
require.NoError(t, err)
|
||
|
||
assert.Equal(t, "DATAWRITE", string(b[:n]))
|
||
}
|
||
|
||
func TestProxy_ServeUDP_MaxDataSize(t *testing.T) {
|
||
if runtime.GOOS == "darwin" {
|
||
// sudo sysctl -w net.inet.udp.maxdgram=65507
|
||
t.Skip("Skip test on darwin as the maximum dgram size is set to 9216 bytes by default")
|
||
}
|
||
|
||
// Theoretical maximum size of data in a UDP datagram.
|
||
// 65535 − 8 (UDP header) − 20 (IP header).
|
||
dataSize := 65507
|
||
|
||
backendAddr := ":8083"
|
||
go newServer(t, backendAddr, HandlerFunc(func(conn *Conn) {
|
||
buffer := make([]byte, dataSize)
|
||
|
||
n, err := conn.Read(buffer)
|
||
require.NoError(t, err)
|
||
|
||
_, err = conn.Write(buffer[:n])
|
||
require.NoError(t, err)
|
||
}))
|
||
|
||
proxy, err := NewProxy(backendAddr)
|
||
require.NoError(t, err)
|
||
|
||
proxyAddr := ":8082"
|
||
go newServer(t, proxyAddr, proxy)
|
||
|
||
time.Sleep(time.Second)
|
||
|
||
udpConn, err := net.Dial("udp", proxyAddr)
|
||
require.NoError(t, err)
|
||
|
||
want := make([]byte, dataSize)
|
||
|
||
_, err = rand.Read(want)
|
||
require.NoError(t, err)
|
||
|
||
_, err = udpConn.Write(want)
|
||
require.NoError(t, err)
|
||
|
||
got := make([]byte, dataSize)
|
||
|
||
_, err = udpConn.Read(got)
|
||
require.NoError(t, err)
|
||
|
||
assert.Equal(t, want, got)
|
||
}
|
||
|
||
func newServer(t *testing.T, addr string, handler Handler) {
|
||
t.Helper()
|
||
|
||
addrL, err := net.ResolveUDPAddr("udp", addr)
|
||
require.NoError(t, err)
|
||
|
||
listener, err := Listen("udp", addrL, 3*time.Second)
|
||
require.NoError(t, err)
|
||
|
||
for {
|
||
conn, err := listener.Accept()
|
||
require.NoError(t, err)
|
||
|
||
go handler.ServeUDP(conn)
|
||
}
|
||
}
|