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JMeter add-on that defines a number of samplers for load testing WebSocket applications.
/*
* Copyright © 2016, 2017, 2018 Peter Doornbosch
*
* This file is part of JMeter-WebSocket-Samplers, a JMeter add-on for load-testing WebSocket applications.
*
* JMeter-WebSocket-Samplers is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* JMeter-WebSocket-Samplers is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
* more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see threadLocalCachedConnection = new ThreadLocal<>();
protected HeaderManager headerManager;
protected CookieManager cookieManager;
protected List frameFilters = new ArrayList<>();
protected int readTimeout;
protected int connectTimeout;
// Proxy configuration: only static proxy configuration is supported.
private static String proxyHost;
private static int proxyPort;
private static List nonProxyHosts;
private static List nonProxyWildcards;
private static String proxyUsername;
private static String proxyPassword;
// Thread stop policy: what to do with connection when thread ends?
private static ThreadStopPolicy threadStopPolicy = ThreadStopPolicy.NONE;
abstract protected String validateArguments();
abstract protected WebSocketClient prepareWebSocketClient(SampleResult result);
static {
checkJMeterVersion();
initProxyConfiguration();
checkForOtherWebsocketPlugins();
initThreadStopPolicy();
}
public void clearTestElementChildren() {
frameFilters.clear();
}
@Override
public SampleResult sample(Entry entry) {
Logger log = getLogger();
SampleResult result = new SampleResult();
result.setSampleLabel(getName());
String validationError = validateArguments();
if (validationError != null) {
result.setResponseCode("Sampler error");
result.setResponseMessage("Sampler error: " + validationError);
return result;
}
readTimeout = Integer.parseInt(getReadTimeout());
connectTimeout = Integer.parseInt(getConnectTimeout());
WebSocketClient wsClient = prepareWebSocketClient(result);
if (wsClient == null)
return result;
if (! wsClient.isConnected()) {
if (headerManager != null || cookieManager != null) {
Map additionalHeaders = convertHeaders(headerManager);
String cookieHeaderValue = getCookieHeaderValue(cookieManager, wsClient.getConnectUrl());
if (cookieHeaderValue != null)
additionalHeaders.put("Cookie", cookieHeaderValue);
wsClient.setAdditionalUpgradeRequestHeaders(additionalHeaders);
result.setRequestHeaders(additionalHeaders.entrySet().stream().map(e -> e.getKey() + ": " + e.getValue()).collect(Collectors.joining("\n")));
}
}
boolean gotNewConnection = false;
result.sampleStart(); // Start timing
try {
Map responseHeaders = null;
if (! wsClient.isConnected()) {
if (useTLS() && !USE_CACHED_SSL_CONTEXT)
((JsseSSLManager) SSLManager.getInstance()).resetContext();
if (useProxy(wsClient.getConnectUrl().getHost()))
wsClient.useProxy(proxyHost, proxyPort, proxyUsername, proxyPassword);
result.setSamplerData("Connect URL:\n" + getConnectUrl(wsClient.getConnectUrl()) + "\n"); // Ensure connect URL is reported in case of a connect error.
WebSocketClient.HttpResult httpResult = wsClient.connect(connectTimeout, readTimeout);
responseHeaders = httpResult.responseHeaders;
result.connectEnd();
result.setHeadersSize(httpResult.responseSize);
result.setSentBytes(httpResult.requestSize);
gotNewConnection = true;
}
else {
result.setSamplerData("Connect URL:\n" + getConnectUrl(wsClient.getConnectUrl()) + "\n(using existing connection)\n");
}
Frame response = doSample(wsClient, result);
result.sampleEnd(); // End timimg
if (response != null) {
result.setHeadersSize(result.getHeadersSize() + response.getSize() - response.getPayloadSize());
result.setBodySize(result.getBodySize() + response.getPayloadSize());
}
if (gotNewConnection) {
result.setResponseCode("101");
result.setResponseMessage("Switching Protocols");
result.setResponseHeaders(responseHeaders.entrySet().stream().map( header -> header.getKey() + ": " + header.getValue()).collect(Collectors.joining("\n")));
}
else {
result.setResponseCodeOK();
result.setResponseMessage("OK");
}
postProcessResponse(response, result);
result.setSuccessful(true);
}
catch (UnexpectedFrameException e) {
handleUnexpectedFrameException(e, result);
}
catch (MalformedURLException e) {
// Impossible
throw new RuntimeException(e);
}
catch (HttpUpgradeException upgradeError) {
result.sampleEnd(); // End timimg
getLogger().debug("Http upgrade error in sampler '" + getName() + "'.", upgradeError);
result.setResponseCode(upgradeError.getStatusCodeAsString());
result.setResponseMessage(upgradeError.getMessage());
}
catch (IOException ioExc) {
if (result.getEndTime() == 0)
result.sampleEnd(); // End timimg
getLogger().debug("I/O Error in sampler '" + getName() + "'.", ioExc);
result.setResponseCode("Websocket I/O error");
result.setResponseMessage("WebSocket I/O error: " + ioExc.getMessage());
}
catch (SamplingAbortedException abort) {
if (result.getEndTime() == 0)
result.sampleEnd(); // End timimg
// Error should have been handled by subclass
}
catch (Exception error) {
if (result.getEndTime() == 0)
result.sampleEnd(); // End timimg
getLogger().error("Unhandled error in sampler '" + getName() + "'.", error);
result.setResponseCode("Sampler error");
result.setResponseMessage("Sampler error: " + error);
}
if (gotNewConnection)
threadLocalCachedConnection.set(wsClient);
else {
if (! wsClient.isConnected())
threadLocalCachedConnection.set(null);
}
return result;
}
abstract protected Frame doSample(WebSocketClient wsClient, SampleResult result) throws IOException, UnexpectedFrameException, SamplingAbortedException;
protected void postProcessResponse(Frame response, SampleResult result) {}
protected void handleUnexpectedFrameException(UnexpectedFrameException e, SampleResult result) {
result.sampleEnd(); // End timimg
getLogger().error("Unexpected frame type received in sampler '" + getName() + "': " + e.getReceivedFrame());
result.setResponseCode("Sampler error: unexpected frame type.");
result.setResponseMessage("Received: " + e.getReceivedFrame());
}
public void addTestElement(TestElement element) {
if (element instanceof HeaderManager) {
headerManager = (HeaderManager) element;
} else if (element instanceof CookieManager) {
cookieManager = (CookieManager) element;
} else if (element instanceof FrameFilter) {
if (! frameFilters.contains(element)) {
frameFilters.add((FrameFilter) element);
getLogger().debug("Added filter " + element + " to sampler " + this + "; filter list is now " + frameFilters);
}
else {
getLogger().debug("Ignoring additional filter " + element + "; already present in chain.");
}
} else {
super.addTestElement(element);
}
}
@Override
public void threadStarted() {
}
@Override
public void threadFinished() {
if (threadStopPolicy != ThreadStopPolicy.NONE) {
WebSocketClient webSocketClient = threadLocalCachedConnection.get();
if (webSocketClient != null) {
if (threadStopPolicy.equals(ThreadStopPolicy.WSCLOSE)) {
try {
getLogger().debug("Test thread finished: closing WebSocket connection");
webSocketClient.sendClose(1000, "test thread finished");
} catch (Exception e) {
getLogger().error("Closing WebSocket connection failed", e);
}
}
else {
getLogger().debug("Test thread finsished: closing connection");
}
webSocketClient.dispose();
threadLocalCachedConnection.remove();
}
}
}
protected String getConnectUrl(URL url) {
String path = url.getFile();
if (! path.startsWith("/"))
path = "/" + path;
if ("http".equals(url.getProtocol()))
return "ws" + "://" + url.getHost() + ":" + url.getPort() + path;
else if ("https".equals(url.getProtocol()))
return "wss" + "://" + url.getHost() + ":" + url.getPort() + path;
else {
getLogger().error("Invalid protocol in sampler '"+ getName() + "': " + url.getProtocol());
return "";
}
}
protected void processDefaultReadResponse(DataFrame response, boolean binary, SampleResult result) {
if (binary) {
byte[] responseData = ((BinaryFrame) response).getBinaryData();
result.setResponseData(responseData);
getLogger().debug("Sampler '" + getName() + "' received " + response.getTypeAsString() + " frame with data: " + BinaryUtils.formatBinary(responseData));
}
else {
result.setResponseData(((TextFrame) response).getText(), StandardCharsets.UTF_8.name());
getLogger().debug("Sampler '" + getName() + "' received " + response.getTypeAsString() + " frame with text: '" + ((TextFrame) response).getText() + "'");
}
result.setDataType(binary ? SampleResult.BINARY : SampleResult.TEXT);
JMeterContextService.getContext().getVariables().put(VAR_WEBSOCKET_LAST_FRAME_FINAL, String.valueOf(response.isFinalFragment()));
}
protected String validatePortNumber(String value) {
try {
int port = Integer.parseInt(value);
if (port <= 0 || port > 65535)
return "Port number '" + value + "' is not valid.";
if (port == 80 && useTLS())
getLogger().warn("Sampler '"+ getName() + "' is using wss protocol (with TLS) on port 80; this might indicate a configuration error");
if (port == 443 && !useTLS())
getLogger().warn("Sampler '"+ getName() + "' is using ws protocol (without TLS) on port 443; this might indicate a configuration error");
} catch (NumberFormatException notAnumber) {
return "Port number '" + value + "' is not a number.";
}
return null;
}
protected String validateConnectionTimeout(String value) {
try {
int connectTimeout = Integer.parseInt(value);
if (connectTimeout < RequestResponseWebSocketSampler.MIN_CONNECTION_TIMEOUT || connectTimeout > RequestResponseWebSocketSampler.MAX_CONNECTION_TIMEOUT)
return "Connection timeout '" + connectTimeout + "' is not valid; should between " + RequestResponseWebSocketSampler.MIN_CONNECTION_TIMEOUT + " and " + RequestResponseWebSocketSampler.MAX_CONNECTION_TIMEOUT;
} catch (NumberFormatException notAnumber) {
return "Connection timeout '" + value + "' is not a number.";
}
return null;
}
protected String validateReadTimeout(String value) {
try {
int readTimeout = Integer.parseInt(value);
if (readTimeout < RequestResponseWebSocketSampler.MIN_READ_TIMEOUT || readTimeout > RequestResponseWebSocketSampler.MAX_READ_TIMEOUT)
return "Read timeout '" + readTimeout + "' is not valid; should between " + RequestResponseWebSocketSampler.MIN_READ_TIMEOUT + " and " + RequestResponseWebSocketSampler.MAX_READ_TIMEOUT;
}
catch (NumberFormatException notAnumber) {
return "Read timeout '" + value + "' is not a number.";
}
return null;
}
protected void dispose(WebSocketClient webSocketClient) {
if (webSocketClient != null) {
getLogger().debug("Sampler '"+ getName() + "': closing streams for existing websocket connection");
webSocketClient.dispose();
}
}
private Map convertHeaders(HeaderManager headerManager) {
Map headers = new HashMap<>();
if (headerManager != null)
for (int i = 0; i < headerManager.size(); i++) {
Header header = headerManager.get(i);
if (header.getName().trim().length() > 0)
headers.put(header.getName(), header.getValue());
else
getLogger().debug("Ignoring header with no name");
}
return headers;
}
private String getCookieHeaderValue(CookieManager cookieManager, URL url) {
if (cookieManager != null)
return cookieManager.getCookieHeaderForURL(url);
else
return null;
}
static void initProxyConfiguration() {
proxyHost = System.getProperty("http.proxyHost",null);
proxyPort = Integer.parseInt(System.getProperty("http.proxyPort","0"));
List nonProxyHostList = Arrays.asList(System.getProperty("http.nonProxyHosts","").split("\\|"));
nonProxyHosts = nonProxyHostList.stream().filter(h -> !h.startsWith("*")).collect(Collectors.toList());
nonProxyWildcards = nonProxyHostList.stream().filter(h -> h.startsWith("*")).map(w -> w.substring(1)).collect(Collectors.toList());
proxyUsername = JMeterUtils.getPropDefault(JMeter.HTTP_PROXY_USER,null);
proxyPassword = JMeterUtils.getPropDefault(JMeter.HTTP_PROXY_PASS,null);
}
boolean useProxy(String host) {
// Check for (what JMeter calls) "static" proxy
if (proxyHost != null && proxyHost.trim().length() > 0) {
return !nonProxyHosts.contains(host) && nonProxyWildcards.stream().filter(wildcard -> host.endsWith(wildcard)).count() == 0;
}
else
return false;
}
static void initThreadStopPolicy() {
String propertyValue = JMeterUtils.getPropDefault(WS_THREAD_STOP_POLICY_PROPERTY, "none");
try {
threadStopPolicy = ThreadStopPolicy.valueOf(propertyValue.trim().toUpperCase());
}
catch (IllegalArgumentException e) {
}
}
protected boolean useTLS() {
return getTLS();
}
public String getConnectTimeout() {
return getPropertyAsString("connectTimeout", "" + WebSocketClient.DEFAULT_CONNECT_TIMEOUT).trim();
}
public void setConnectTimeout(String connectTimeout) {
setProperty("connectTimeout", connectTimeout, "" + WebSocketClient.DEFAULT_CONNECT_TIMEOUT);
}
public String getReadTimeout() {
return getPropertyAsString("readTimeout", "" +WebSocketClient.DEFAULT_READ_TIMEOUT).trim();
}
public void setReadTimeout(String readTimeout) {
setProperty("readTimeout", readTimeout, "" + WebSocketClient.DEFAULT_READ_TIMEOUT);
}
public boolean getTLS() {
return getPropertyAsBoolean("TLS");
}
public void setTLS(boolean value) {
setProperty("TLS", value);
}
abstract protected Logger getLogger();
private static void checkForOtherWebsocketPlugins() {
try {
WebsocketSampler.class.getClassLoader().loadClass("JMeter.plugins.functional.samplers.websocket.WebSocketSampler");
LoggingManager.getLoggerForClass().warn("Detected Maciej Zaleski's WebSocket Sampler plugin is installed too, which is not compatible with this plugin (but both can co-exist).");
} catch (ClassNotFoundException e) {
// Ok, it's not there.
} catch (Exception e) {
// Never let any exception leave this method
LoggingManager.getLoggerForClass().error("Error while loading class", e);
}
}
private static void checkJMeterVersion() {
try {
String jmeterVersion = JMeterUtils.getJMeterVersion();
Matcher m = Pattern.compile("(\\d+)\\.(\\d+).*").matcher(jmeterVersion);
if (m.matches()) {
int major = Integer.parseInt(m.group(1));
int minor = Integer.parseInt(m.group(2));
if (major < 3 || (major == 3 && minor < 1)) {
String errorMsg = "This version of the WebSocketSamplers plugin requires JMeter 3.1 or later.";
if (GuiPackage.getInstance() != null) {
SwingUtilities.invokeLater(() -> {
GuiPackage.showErrorMessage(errorMsg, "Incompatible versions");
});
} else {
LoggingManager.getLoggerForClass().error(errorMsg);
}
}
}
}
catch (Exception e) {
// Let this method never throw an exception
}
}
}
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