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HTTP: WebSocket doesn't properly recover after reconnecting

See original GitHub issue

Environment:

  • Gatling version: 3.6.1 / 3.7.0-M1
  • Gatling Gradle plugin version: 3.7.0-M1

Issue

My observation about .onConnected(), .wsMaxReconnects() method. When I forced on server side to close connection (eg. 1003 code) during foreach loop by sending binary message, then Gatling reconnects and calls again .onConnected method which is correct behaviour, but on second attempt it freezes after sending & receiving Config Frame … Please see below code & logs. Did I discover a BUG? Another thing, I set wsMaxReconnects to 0, the Gatling still reconnects, I think it shouldn’t reconnect.

Code

import io.gatling.core.Predef.{exec, _}
import io.gatling.http.Predef._

import java.nio.file.{Files, Paths}
import scala.concurrent.duration.DurationInt

class BasicSimulationCall extends Simulation {

  val byteArray = Files.readAllBytes(Paths.get("<PATH_TO_SOME_FILE_EG_IMAGE>"))
  val httpProtocol = http
    .baseUrl("http://localhost:8080/v1/")
    .wsBaseUrl("ws://localhost:8080/v1/")
    .wsReconnect
    .wsMaxReconnects(0)
    .disableWarmUp
  val chunkSize: Int = 8000


  def sendToWS = {
      exec(
        ws("WS Connect")
          .connect("123/521beea1-2cd1-4fa3-b087-e862a39e1000/1")
          .await(300.millis)(
            ws.checkTextMessage("checkConnection")
              .check(jsonPath("$.message").is("Connection - OK"))
          )
          .onConnected(
            exec(
              ws("Send Config Frame")
                .sendText(s"{'ChannelId': 'ch-123', 'OperatorId': 'JohnDoe'}")
                .await(500.second)(
                  ws.checkTextMessage("checkCfgFrame")
                    .check(jsonPath("$.message").is("Config Frame - OK"))
                )
            ).pause(500.millis)
          )
      )
      .pause(1)
      .foreach(byteArray.grouped(chunkSize).toSeq, "packet") {
        exec(
          ws("Send bytes").sendBytes("${packet}")
          //Here I don't wait for any response message - from the server side I don't want to send message like ACK
        ).pause(250.millis)
      }
      .pause(100.millis)
      .exec(ws("Close WS").close)
  }

    val scn = scenario("Web Socket test")
      .exec(sendToWS)

  setUp(
        scn.inject(rampUsers(1).during(1)).protocols(httpProtocol)
  )
}

Output logs

Simulation BasicSimulationCall started...
13:14:18.222 [DEBUG] i.g.h.a.w.WsConnect - Opening websocket 'gatling.http.webSocket': Scenario 'Web Socket test', UserId #1
13:14:18.229 [DEBUG] i.g.h.a.w.f.WsConnectingState$ - Connecting to ws://localhost:8080/v1/123/521beea1-2cd1-4fa3-b087-e862a39e1000/1
13:14:18.912 [DEBUG] i.g.h.a.w.WsListener - Received response to WebSocket CONNECT: 101 Switching Protocols DefaultHttpHeaders[upgrade: websocket, connection: upgrade, sec-websocket-accept: 18+bn2TEKXYnmcNTb32TbRkUCM4=, content-length: 0]
13:14:18.915 [DEBUG] i.g.h.a.w.f.WsConnectingState - Connected, performing checks, setting callback to perform next action after performing onConnected action
13:14:18.916 [DEBUG] i.g.h.a.w.f.WsFsm - Timeout 1536879719 scheduled
13:14:18.932 [DEBUG] i.g.h.a.w.f.WsPerformingCheckState - Received matching message {"message": "Connection - OK", "sessionId": "tWxsOCtdQAlbqIh5TVpUsg=="}
13:14:18.932 [DEBUG] i.g.h.a.w.f.WsFsm - Timeout 1536879719 cancelled
13:14:18.968 [DEBUG] i.g.h.a.w.f.WsPerformingCheckState - Current check success
13:14:18.968 [DEBUG] i.g.h.a.w.f.WsPerformingCheckState - Check sequences completed successfully
13:14:18.971 [DEBUG] i.g.h.a.w.WsSendTextFrame - Sending text frame {'ChannelId': 'ch-123', 'OperatorId': 'JohnDoe'} with WebSocket '<function1>': Scenario 'Web Socket test', UserId #1
13:14:18.971 [DEBUG] i.g.h.a.w.f.WsIdleState - Send text frame Send Config Frame {'ChannelId': 'ch-123', 'OperatorId': 'JohnDoe'}
13:14:18.972 [DEBUG] i.g.h.a.w.f.WsIdleState - Trigger check after sending text frame
13:14:18.972 [DEBUG] i.g.h.a.w.f.WsFsm - Timeout 87394968 scheduled
13:14:20.815 [DEBUG] i.g.h.a.w.f.WsPerformingCheckState - Received matching message {"message": "Config Frame - OK", "sessionId": "tWxsOCtdQAlbqIh5TVpUsg=="}
13:14:20.815 [DEBUG] i.g.h.a.w.f.WsFsm - Timeout 87394968 cancelled
13:14:20.816 [DEBUG] i.g.h.a.w.f.WsPerformingCheckState - Current check success
13:14:20.816 [DEBUG] i.g.h.a.w.f.WsPerformingCheckState - Check sequences completed successfully
13:14:22.328 [DEBUG] i.g.h.a.w.WsSendBinaryFrame - Sending binary frame of 8000 bytes with WebSocket '<function1>': Scenario 'Web Socket test', UserId #1
13:14:22.329 [DEBUG] i.g.h.a.w.f.WsIdleState - Send binary frame Send bytes length=8000
13:14:22.348 [DEBUG] i.g.h.a.w.f.WsIdleState - WebSocket was forcefully closed (1003:Unsupported Data) by the server while in Idle state
13:14:22.586 [DEBUG] i.g.h.a.w.WsSendBinaryFrame - Sending binary frame of 8000 bytes with WebSocket '<function1>': Scenario 'Web Socket test', UserId #1
13:14:22.587 [DEBUG] i.g.h.a.w.f.WsCrashedState - Client issued message but WebSocket was already closed
13:14:22.587 [DEBUG] i.g.h.a.w.f.WsConnectingState$ - Connecting to ws://localhost:8080/v1/123/521beea1-2cd1-4fa3-b087-e862a39e1000/1
13:14:22.600 [DEBUG] i.g.h.a.w.WsListener - Received response to WebSocket CONNECT: 101 Switching Protocols DefaultHttpHeaders[upgrade: websocket, connection: upgrade, sec-websocket-accept: oJcUzHzFAHK8YiPQn/C6PhUJvME=, content-length: 0]
13:14:22.601 [DEBUG] i.g.h.a.w.f.WsConnectingState - Connected, performing checks, setting callback to send pending message after performing onConnected action
13:14:22.602 [DEBUG] i.g.h.a.w.f.WsFsm - Timeout 1764290324 scheduled
13:14:22.602 [DEBUG] i.g.h.a.w.f.WsPerformingCheckState - Received matching message {"message": "Connection - OK", "sessionId": "yX4D6JCTC/r7VNBWuLQckw=="}
13:14:22.602 [DEBUG] i.g.h.a.w.f.WsFsm - Timeout 1764290324 cancelled
13:14:22.602 [DEBUG] i.g.h.a.w.f.WsPerformingCheckState - Current check success
13:14:22.602 [DEBUG] i.g.h.a.w.f.WsPerformingCheckState - Check sequences completed successfully
13:14:22.603 [DEBUG] i.g.h.a.w.WsSendTextFrame - Sending text frame {'ChannelId': 'ch-123', 'OperatorId': 'JohnDoe'} with WebSocket '<function1>': Scenario 'Web Socket test', UserId #1
13:14:22.603 [DEBUG] i.g.h.a.w.f.WsIdleState - Send text frame Send Config Frame {'ChannelId': 'ch-123', 'OperatorId': 'JohnDoe'}
13:14:22.603 [DEBUG] i.g.h.a.w.f.WsIdleState - Trigger check after sending text frame
13:14:22.603 [DEBUG] i.g.h.a.w.f.WsFsm - Timeout 521765391 scheduled
13:14:23.178 [DEBUG] i.g.h.a.w.f.WsPerformingCheckState - Received matching message {"message": "Config Frame - OK", "sessionId": "yX4D6JCTC/r7VNBWuLQckw=="}
13:14:23.178 [DEBUG] i.g.h.a.w.f.WsFsm - Timeout 521765391 cancelled
13:14:23.178 [DEBUG] i.g.h.a.w.f.WsPerformingCheckState - Current check success
13:14:23.179 [DEBUG] i.g.h.a.w.f.WsPerformingCheckState - Check sequences completed successfully

================================================================================
2021-11-25 13:14:23                                           5s elapsed
---- Requests ------------------------------------------------------------------
> Global                                                   (OK=9      KO=0     )
> WS Connect                                               (OK=2      KO=0     )
> checkConnection                                          (OK=2      KO=0     )
> Send Config Frame                                        (OK=2      KO=0     )
> checkCfgFrame                                            (OK=2      KO=0     )
> Send bytes                                               (OK=1      KO=0     )

---- Web Socket test -----------------------------------------------------------
[--------------------------------------------------------------------------]  0%
          waiting: 0      / active: 1      / done: 0
================================================================================


================================================================================
2021-11-25 13:14:28                                          10s elapsed
---- Requests ------------------------------------------------------------------
> Global                                                   (OK=9      KO=0     )
> WS Connect                                               (OK=2      KO=0     )
> checkConnection                                          (OK=2      KO=0     )
> Send Config Frame                                        (OK=2      KO=0     )
> checkCfgFrame                                            (OK=2      KO=0     )
> Send bytes                                               (OK=1      KO=0     )

---- Web Socket test -----------------------------------------------------------
[--------------------------------------------------------------------------]  0%
          waiting: 0      / active: 1      / done: 0
================================================================================


================================================================================
2021-11-25 13:14:33                                          15s elapsed
---- Requests ------------------------------------------------------------------
> Global                                                   (OK=9      KO=0     )
> WS Connect                                               (OK=2      KO=0     )
> checkConnection                                          (OK=2      KO=0     )
> Send Config Frame                                        (OK=2      KO=0     )
> checkCfgFrame                                            (OK=2      KO=0     )
> Send bytes                                               (OK=1      KO=0     )

---- Web Socket test -----------------------------------------------------------
[--------------------------------------------------------------------------]  0%
          waiting: 0      / active: 1      / done: 0
================================================================================


================================================================================
2021-11-25 13:14:38                                          20s elapsed
---- Requests ------------------------------------------------------------------
> Global                                                   (OK=9      KO=0     )
> WS Connect                                               (OK=2      KO=0     )
> checkConnection                                          (OK=2      KO=0     )
> Send Config Frame                                        (OK=2      KO=0     )
> checkCfgFrame                                            (OK=2      KO=0     )
> Send bytes                                               (OK=1      KO=0     )

---- Web Socket test -----------------------------------------------------------
[--------------------------------------------------------------------------]  0%
          waiting: 0      / active: 1      / done: 0
================================================================================

Issue Analytics

  • State:closed
  • Created 2 years ago
  • Reactions:1
  • Comments:11 (6 by maintainers)

github_iconTop GitHub Comments

1reaction
rjaros87commented, Nov 26, 2021

Fix works like a charm 😄 . Thanks.

1reaction
slandellecommented, Nov 26, 2021

Looks like a gradle download issue. It’s definitely released (so is the gradle plugin).

The binaries are online, but the indexes on search.maven.org take some time to get updated. You should check the files directly (Browse button): https://repo1.maven.org/maven2/io/gatling/highcharts/gatling-charts-highcharts/3.7.2/

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