--- a/stress-tester/src/main/java/com/passus/st/ConverterHttpClient.java	Wed Nov 29 10:05:12 2017 +0100
+++ b/stress-tester/src/main/java/com/passus/st/ConverterHttpClient.java	Wed Nov 29 10:12:08 2017 +0100
@@ -24,12 +24,17 @@
 
     private NcEventDestination dst;
     private boolean allowOverwrite;
+    private boolean requestOnly;
     private boolean started;
 
     public ConverterHttpClient(String ncFile) {
         this.ncFile = ncFile;
     }
 
+    void setRequestOnly(boolean requestOnly) {
+        this.requestOnly = requestOnly;
+    }
+
     void setAllowOverwrite(boolean overwrite) {
         this.allowOverwrite = overwrite;
     }
@@ -47,6 +52,7 @@
 
         dst = new NcEventDestination(ncFile);
         dst.setAllowOverwrite(allowOverwrite);
+        dst.setRequestOnly(requestOnly);
         dst.start();
 
         started = true;

--- a/stress-tester/src/main/java/com/passus/st/ConverterMain.java	Wed Nov 29 10:05:12 2017 +0100
+++ b/stress-tester/src/main/java/com/passus/st/ConverterMain.java	Wed Nov 29 10:12:08 2017 +0100
@@ -66,38 +66,15 @@
                 .build()
         );
 
-//        options.addOption(option("rd", "reporterDirectory").desc("Reporter directory.")
-//                .hasArg().argName("ip")
-//                .build()
-//        );
-//        options.addOption(option("ri", "reporterIp").desc("Reporter ip address.")
-//                .hasArg().argName("ip")
-//                .build()
-//        );
-//        options.addOption(option("nrt", "numReporterThreads").desc("Number of sending threads. (range 1 - 8, default 2)")
-//                .hasArg().argName("threads")
-//                .build()
-//        );
-//
-//        options.addOption(option("wf", "writeFile").desc("Write result to file.")
-//                .hasArg().argName("file").optionalArg(true)
-//                .build()
-//        );
-//
-//        options.addOption(option("wd", "writeDirectory").desc("Write HTTP messages to separate files.")
-//                .hasArg().argName("directory")
-//                .build()
-//        );
-//
-//        options.addOption(option("wdro", "writeDirectoryRequestsOnly").desc("Write only HTTP requests.")
-//                .hasArg(false)
-//                .build()
-//        );
-//
 //        options.addOption(option("wm", "writeMetrics").desc("Write metrics to file.")
 //                .hasArg().argName("file")
 //                .build()
 //        );
+        options.addOption(option("req", "requestOnly").desc("Write only HTTP requests")
+                .hasArg(false)
+                .build()
+        );
+
         return options;
     }
 
@@ -159,6 +136,8 @@
             }
             client.setAllowOverwrite(overwrite);
 
+            client.setRequestOnly(cl.hasOption("req"));
+
             client.start();
 
             PcapSessionEventSource eventSrc = new PcapSessionEventSource();

--- a/stress-tester/src/main/java/com/passus/st/reader/nc/HttpSessionPayloadEventDataWriter.java	Wed Nov 29 10:05:12 2017 +0100
+++ b/stress-tester/src/main/java/com/passus/st/reader/nc/HttpSessionPayloadEventDataWriter.java	Wed Nov 29 10:12:08 2017 +0100
@@ -68,7 +68,7 @@
         return len;
     }
 
-    public long encodeVersion(HttpMessage msg, ByteBuff buff) throws IOException {
+    private long encodeVersion(HttpMessage msg, ByteBuff buff) throws IOException {
         if (HttpConsts.VERSION_1_0.equals(msg.getVersion())) {
             buff.append(NcHttpDataUtils.VERSION_1_0);
         } else if (HttpConsts.VERSION_1_1.equals(msg.getVersion())) {
@@ -80,7 +80,7 @@
         return 1;
     }
 
-    public long encodeRequest(HttpRequest req, ByteBuff buff) throws IOException {
+    private long encodeRequest(HttpRequest req, ByteBuff buff) throws IOException {
         long size = 0;
         size += ncDataHelper.writeByteStringNullTerminated(buff, req.getMethod().toByteString());
         size += ncDataHelper.writeByteStringNullTerminated(buff, req.getUri());
@@ -89,7 +89,7 @@
         return size;
     }
 
-    public long encodeResponse(HttpResponse resp, ByteBuff buff) throws IOException {
+    private long encodeResponse(HttpResponse resp, ByteBuff buff) throws IOException {
         long size = 0;
         dataHelper.writeInt2(buff, resp.getStatus().getCode());
         size += 2;

--- a/stress-tester/src/main/java/com/passus/st/source/NcEventDestination.java	Wed Nov 29 10:05:12 2017 +0100
+++ b/stress-tester/src/main/java/com/passus/st/source/NcEventDestination.java	Wed Nov 29 10:12:08 2017 +0100
@@ -37,6 +37,8 @@
 
     private boolean allowOverwrite;
 
+    private boolean requestOnly;
+
     public NcEventDestination() {
     }
 
@@ -77,6 +79,15 @@
         this.allowOverwrite = allowOverwrite;
     }
 
+    public boolean isRequestOnly() {
+        return requestOnly;
+    }
+
+    public void setRequestOnly(boolean requestOnly) {
+        this.requestOnly = requestOnly;
+        httpPayloadWriter.setEncodeResponse(!requestOnly);
+    }
+
     @Override
     public void start() {
         if (started) {
@@ -132,7 +143,7 @@
             writer.writeSessionPayload(event.getTimestamp(), event.getSessionInfo(), (byte) 1, buff);
         }
 
-        if (event.getResponse() != null) {
+        if (event.getResponse() != null && !requestOnly) {
             ByteBuff buff = new HeapByteBuff();
             responseEncoder.encode(event.getResponse(), buff);
             writer.writeSessionPayload(event.getTimestamp(), event.getSessionInfo(), (byte) 1, buff);

--- a/stress-tester/src/test/java/com/passus/st/source/NcEventDestinationTest.java	Wed Nov 29 10:05:12 2017 +0100
+++ b/stress-tester/src/test/java/com/passus/st/source/NcEventDestinationTest.java	Wed Nov 29 10:12:08 2017 +0100
@@ -17,8 +17,6 @@
 import java.util.Properties;
 import static org.testng.AssertJUnit.assertEquals;
 import org.testng.annotations.Test;
-import static com.passus.commons.utils.ResourceUtils.createTmpFile;
-import static com.passus.commons.utils.ResourceUtils.createTmpFile;
 
 /**
  *