---
title: TrafficScript Functions in the Java Extension API
slug: ps/help/en_us/vtm/jdev/trafficscript-functions-in-the-java-extension-api
docTags:
createdAt: 2026-08-02T09:24:25.635Z
---
This chapter details how to use the TrafficScript functionality in a Java Extension.
:::hint{type="info"}
To find more information about Java, see [Java API Documentation](docId\:LDKlEpPh-T40MfJhTgkVR).
:::
## Equivalent TrafficScript Functions in the Java Extension API
This table lists TrafficScipt functions and the equivalent Java Extension API.
| TrafficScript Function | Java Extension API |
| --------------------------------------------------------------------- | ------------------------------------------------------------------------------------- |
| connection.close()/discard() | ZXTMServletResponse.dropConnection() |
| connection.getMemoryUsage() | No equivalent. |
| connection.getNode() | ServletRequest.getAttribute( “node” ) |
| connection.get/setPersistence() | ServletRequest.get/setAttribute( “persistence” ) |
| connection.getPool() | ServletRequest.getAttribute( “pool” ) |
| connection.get/
setServiceLevelClass() | ServletRequest.get/setAttribute( “servicelevel” ) |
| connection.getVirtualServer() | ServletRequest.getAttribute( “virtualserver” ) |
| connection.setPersistenceKey() | ServletRequest.setAttribute( “persistencekey” ) |
| connection.setPersistenceNode() | ServletRequest.setAttribute( “persistencenode” ) |
| connection.sleep() | Thread.sleep() |
| connection.data.get/set() | ZXTMServletRequest.get/setConnectionData() |
| counter.increment() | ZXTMServletRequest.incrementCounter() |
| data.get/set() | ZXTMServletRequest.get/setData() |
| data.getMemoryUsage() | No equivalent. |
| data.reset() | No equivalent. |
| event.emit( event, message ) | ZXTMServletRequest.emitEvent( event, message ) |
| http.add/remove/setHeader() | ZXTMHttpServletRequest.add/remove/setHeader() |
| http.addResponseHeader() | HttpServletResponse.addHeader() |
| http.changeSite() | HttpServletResponse.sendRedirect() |
| http.doesFormParamExist()/
getFormParam()/
getQueryString() | HttpServletRequest.getQueryString() |
| http.getBody() | ServletRequest.getInputStream()/getReader() |
| http.getCookie() | HttpServletRequest.getCookies() |
| http.getHeader()/headerExists() | HttpServletRequest.getHeader() |
| http.getHeaderNames() | HttpServletRequest.getHeaderNames() |
| http.getHostHeader() | HttpServletRequest.getHeader() |
| http.getMethod() | HttpServletRequest.getMethod() |
| http.getMultipartAttachment() | Servlet can read the body data itself |
| http.getPath() | HttpServletRequest.getRequestURL() |
| http.getRawURL() | No equivalent. |
| http.getResponseBody() | ZXTMHttpServletResponse.getInputStream()/
getReader() |
| http.getResponseCode() | ZXTMHttpServletResponse.getStatus() |
| http.setResponseCode() | HttpServletResponse.setStatus() |
| http.getResponseCookie() | ZXTMHttpServletResponse.getCookies() |
| http.getResponseHeader()/
responseHeaderExists() | ZXTMHttpServletResponse.getHeader() |
| http.getResponseHeaderNames() | ZXTMHttpServletResponse.getHeaderNames() |
| http.getVersion() | ServletRequest.getProtocol() |
| http.normalisePath() | No equivalent. |
| http.redirect() | HttpServlet.sendRedirect() |
| http.removeCookie()/
setCookie() | ZXTMHttpServletRequest.removeCookie() |
| http.removeResponseCookie() | ZXTMHttpServletResponse.removeCookie() |
| http.removeResponseHeader() | ZXTMHttpServletResponse.removeHeader() |
| http.scrubRequest/
ResponseHeaders() | No equivalent. |
| http.sendResponse() | HttpServletResponse.sendError() |
| http.setBody() | ZXTMHttpServletResponse.getWriter().print() |
| http.setCookie() | HttpServletResponse.addCookie() |
| http.setIdempotent() | ServletRequest.setAttribute( “idempotent” ) |
| http.setMethod() | ZXTMHttpServletRequest.setMethod() |
| http.setPath() | ZXTMHttpServletRequest.setRequestURI() |
| http.set/setRawQueryString() | ZXTMHttpServletRequest.setQueryString() |
| http.setResponseBody() | ServletResponse.getOutputStream()/getWriter() |
| http.setResponseCode() | HttpServletResponse.setStatus() |
| http.setResponseCookie() | HttpServletResponse.addCookie() |
| http.stream.startResponse() | HttpServletResponse.addHeader(), followed by HttpServletResponse.setStatus() |
| http.stream.readResponse()/
readBulkResponse() | ZXTMHttpServletResponse.getInputStream()/
getReader() |
| http.stream.writeResponse() | ServletResponse.getOutputStream().write()/
ServletResponse.getWriter().print() |
| http.stream.finishResponse() | Servlet completes |
| http.stream.continueFromBackend | No equivalent |
| http.cache.disable()/enable() | ServletRequest.getAttribute( “cache” ) |
| http.cache.setKey() | ServletRequest.getAttribute( “cachekey” ) |
| http.compress.disable()/enable() | ServletRequest.getAttribute( “compress” ) |
| http.request.get()/head()/post() | Use built in Java functions. |
| geo.getCity() | ZXTMServletRequest.geoGetCity() |
| geo.getCountry() | ZXTMServletRequest.geoGetCountry() |
| geo.getCountryCode() | ZXTMServletRequest.geoGetCountryCode() |
| geo.getDistanceKM() | ZXTMServletRequest.geoGetDistanceKM() |
| geo.getDistanceMiles() | ZXTMServletRequest.geoGetDistanceMiles() |
| geo.getIPDistanceKM() | ZXTMServletRequest.geoGetIPDistanceKM() |
| geo.getIPDistanceMiles() | ZXTMServletRequest.geoGetIPDistanceMiles() |
| geo.getLatitude()/getLongitude() | ZXTMServletRequest.geoGetLatLon() |
| geo.getRegion() | ZXTMServletRequest.geoGetRegion() |
| geo.getRegionCode() | ZXTMServletRequest.geoGetRegionCode() |
| lang.\* | Use built in Java functions. |
| math.\* | Use built in Java functions. |
| net.dns.resolveHost()/IP() | java.net.InetAddress.getByName()/
getHostName() |
| pool.activeNodes() | ZXTMServletRequest.getActiveNodes() |
| pool.select()/use() | ServletRequest.setAttribute( “pool” ) and
ServletRequest.setAttribute( “proxy” ) |
| rate.getBacklog() | ZXTMServletRequest.getRateBacklog() |
| rate.use() | No equivalent. |
| request.avoidNode() | ServletRequest.setAttribute( “avoidnodes” ) |
| request.endsAt()/endsWith() | No equivalent |
| request.get()/getLine() | ZXTMServletRequest.getInputStream()/
getReader() |
| request.get/setBandwidthClass() | ServletRequest.get/setAttribute( “bandwidth” ) |
| request.getDestIP()/Port() | No equivalent. |
| request.getLength() | No equivalent. |
| request.getLocalIP()/Port() | ServletRequest.getAttribute( “dstip”/”dstport” ) |
| request.get/setRemoteIP()/Port() | ServletRequest.get/setAttribute( “srcip”/”srcport” ) |
| request.getRetries() | ServletRequest.getAttribute( “retries” ) |
| request.get/setToS() | ServletRequest.get/setAttribute( “tos” ) |
| request.getFD() | No equivalent. |
| request.isResendable() | ServletRequest.getAttribute( “resendable” ) |
| request.retry() | ZXTMServletRequest.retry() |
| request.sendResponse() | ServletResponse.getOutputStream()/getWriter() |
| request.set() | ZXTMServletRequest.getOutputStream()/
getWriter() |
| resource.exists()/get()/getMD5()/
getMTime() | Use Java built in functions. |
| response.append() | Not provided, Extension can read/write its own response |
| response.close() | ZXTMServletResponse.dropConnection() |
| response.flush() | ServletResponse.getOutputStream().flush() |
| response.get()/getLine() | ZXTMServletResponse.getInputStream()/
getReader() |
| response.get/setBandwidthClass() | ServletRequest.get/
setAttribute( “serverbandwidth” ) |
| response.getLength() | No equivalent. |
| response.getLocalIP()/Port() | ServletRequest.getAttribute( “serverdstip” / ”serverdstport” ) |
| response.getRemoteIP()/Port() | ServletRequest.getAttribute( “serversrcip” / ”serversrcport” ) |
| response.get/setToS() | ServletRequest.get/setAttribute( “servertos” ) |
| response.getFD() | No equivalent. |
| response.set() | ServletResponse.getOutputStream()/getWriter() |
| rule.getName() | ServletRequest.get/setAttribute( “rule” ) |
| rule.getState() | ZXTMServletResponse.isResponseRule() - 'true' if this is in a response rule |
| slm.conforming() | ZXTMServletRequest.getSLMConforming() |
| slm.isOK() | ZXTMServletRequest.isSLMOK() |
| slm.threshold() | ZXTMServletRequest.getSLMThreshold() |
| ssl.clientCert\*() | ServletRequest.getAttribute( “javax.servlet.request.X509Certificate” ) |
| ssl.clientCipher() | ServletRequest.getAttribute( “javax.net.ssl.cipher\_suite” ) |
| ssl.isSSL() | ServletRequest.getAttribute( “SSL\_PROTOCOL” ) is set. |
| ssl.sslSessionID() | ServletRequest.getAttribute( “SSL\_SESSIONID” ) |
| string.\* | Use built in Java functions. |
| sys.\* | Use built in Java functions. |
| xml.\* | Use built in Java functions. |