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package main
import (
"fmt"
"time"
)
func (s *VethsSuite) testVclEcho(proto string) {
port := "12345"
srvVppCont := s.getContainerByName("server-vpp")
srvAppCont := s.getContainerByName("server-app")
serverVclConfContent := fmt.Sprintf(vclTemplate, srvVppCont.getContainerWorkDir(), "1")
srvAppCont.createFile("/vcl.conf", serverVclConfContent)
srvAppCont.addEnvVar("VCL_CONFIG", "/vcl.conf")
srvAppCont.execServer("vcl_test_server " + port)
serverVeth := s.netInterfaces[serverInterfaceName]
serverVethAddress := serverVeth.ip4AddressString()
echoClnContainer := s.getTransientContainerByName("client-app")
clientVclConfContent := fmt.Sprintf(vclTemplate, echoClnContainer.getContainerWorkDir(), "2")
echoClnContainer.createFile("/vcl.conf", clientVclConfContent)
testClientCommand := "vcl_test_client -p " + proto + " " + serverVethAddress + " " + port
echoClnContainer.addEnvVar("VCL_CONFIG", "/vcl.conf")
o := echoClnContainer.exec(testClientCommand)
s.log(o)
}
func (s *VethsSuite) TestVclEchoTcp() {
s.testVclEcho("tcp")
}
func (s *VethsSuite) TestVclEchoUdp() {
s.testVclEcho("udp")
}
func (s *VethsSuite) TestVclRetryAttach() {
s.skip("this test takes too long, for now it's being skipped")
s.testRetryAttach("tcp")
}
func (s *VethsSuite) testRetryAttach(proto string) {
srvVppContainer := s.getTransientContainerByName("server-vpp")
echoSrvContainer := s.getContainerByName("server-app")
serverVclConfContent := fmt.Sprintf(vclTemplate, echoSrvContainer.getContainerWorkDir(), "1")
echoSrvContainer.createFile("/vcl.conf", serverVclConfContent)
echoSrvContainer.addEnvVar("VCL_CONFIG", "/vcl.conf")
echoSrvContainer.execServer("vcl_test_server -p " + proto + " 12346")
s.log("This whole test case can take around 3 minutes to run. Please be patient.")
s.log("... Running first echo client test, before disconnect.")
serverVeth := s.netInterfaces[serverInterfaceName]
serverVethAddress := serverVeth.ip4AddressString()
echoClnContainer := s.getTransientContainerByName("client-app")
clientVclConfContent := fmt.Sprintf(vclTemplate, echoClnContainer.getContainerWorkDir(), "2")
echoClnContainer.createFile("/vcl.conf", clientVclConfContent)
testClientCommand := "vcl_test_client -U -p " + proto + " " + serverVethAddress + " 12346"
echoClnContainer.addEnvVar("VCL_CONFIG", "/vcl.conf")
o := echoClnContainer.exec(testClientCommand)
s.log(o)
s.log("... First test ended. Stopping VPP server now.")
// Stop server-vpp-instance, start it again and then run vcl-test-client once more
srvVppContainer.vppInstance.disconnect()
stopVppCommand := "/bin/bash -c 'ps -C vpp_main -o pid= | xargs kill -9'"
srvVppContainer.exec(stopVppCommand)
s.setupServerVpp()
s.log("... VPP server is starting again, so waiting for a bit.")
time.Sleep(30 * time.Second) // Wait a moment for the re-attachment to happen
s.log("... Running second echo client test, after disconnect and re-attachment.")
o = echoClnContainer.exec(testClientCommand)
s.log(o)
s.log("Done.")
}
func (s *VethsSuite) TestTcpWithLoss() {
serverVpp := s.getContainerByName("server-vpp").vppInstance
serverVeth := s.netInterfaces[serverInterfaceName]
serverVpp.vppctl("test echo server uri tcp://%s/20022",
serverVeth.ip4AddressString())
clientVpp := s.getContainerByName("client-vpp").vppInstance
// Ensure that VPP doesn't abort itself with NSIM enabled
// Warning: Removing this ping will make the test fail!
clientVpp.vppctl("ping %s", serverVeth.ip4AddressString())
// Add loss of packets with Network Delay Simulator
clientVpp.vppctl("set nsim poll-main-thread delay 0.01 ms bandwidth 40 gbit" +
" packet-size 1400 packets-per-drop 1000")
clientVpp.vppctl("nsim output-feature enable-disable host-vppcln")
// Do echo test from client-vpp container
output := clientVpp.vppctl("test echo client uri tcp://%s/20022 mbytes 50",
serverVeth.ip4AddressString())
s.assertEqual(true, len(output) != 0)
s.assertNotContains(output, "failed: timeout")
s.log(output)
}
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