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package udp_test | |
import ( | |
"net" | |
"strconv" | |
"time" | |
. "github.com/onsi/ginkgo" | |
. "github.com/onsi/gomega" | |
) | |
var _ = Describe("UDP", func() { | |
It("tests", func() { | |
dataChan := make(chan []byte) | |
laddr, err := net.ResolveUDPAddr("udp4", "0.0.0.0:0") | |
Expect(err).ToNot(HaveOccurred()) | |
ln, err := net.ListenUDP("udp4", laddr) | |
Expect(err).ToNot(HaveOccurred()) | |
defer ln.Close() | |
go func() { | |
defer GinkgoRecover() | |
data := make([]byte, 100) | |
n, _, err := ln.ReadFrom(data) | |
Expect(err).ToNot(HaveOccurred()) | |
data = data[:n] | |
dataChan <- data | |
}() | |
addrString := "localhost:" + strconv.Itoa(ln.LocalAddr().(*net.UDPAddr).Port) | |
addr, err := net.ResolveUDPAddr("udp4", addrString) | |
Expect(err).NotTo(HaveOccurred()) | |
Expect(addr.Port).To(Equal(ln.LocalAddr().(*net.UDPAddr).Port)) | |
data := make([]byte, 77) | |
for i := 0; i < 10; i++ { | |
conn, err := net.DialUDP("udp4", nil, addr) | |
Expect(err).ToNot(HaveOccurred()) | |
defer conn.Close() | |
_, err = conn.Write(data) | |
Expect(err).ToNot(HaveOccurred()) | |
time.Sleep(time.Millisecond) | |
} | |
Eventually(dataChan).Should(Receive(Equal(data))) | |
}) | |
}) |
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