Warn if the user tries to cause a gate-based deadlock, fix burp reque…

…st engine

src/RequestEngine.kt

@@ -87,6 +87,10 @@ abstract class RequestEngine {
                 } else {
                     floodgates[gateName] = request.gate!!
                 }
+
+                if (this is ThreadedRequestEngine && request.gate!!.remaining.get() > (this as ThreadedRequestEngine).threads) {
+                    throw Exception("You have queued more gated requests than concurrentConnections, so your attack will deadlock. Consider increasing concurrentConnections")
+                }
             }
         }
 

src/burp/Floodgate.java

@@ -4,7 +4,7 @@
 import java.util.concurrent.atomic.AtomicInteger;
 
 public class Floodgate {
-    final private AtomicInteger remaining = new AtomicInteger(1);
+    final AtomicInteger remaining = new AtomicInteger(1);
     final private AtomicBoolean isOpen = new AtomicBoolean(false);
 
     // the python thread will set here

src/fast-http.kt

@@ -50,7 +50,7 @@ class RequestEngine:
                 print('requestsPerConnection has been forced to 1 and pipelining has been disabled due to Burp engine limitations')
             if(readCallback != None):
                 print('Read callbacks are not supported in the Burp request engine. Try Engine.THREADED instead.')
-            self.engine = burp.BurpRequestEngine(endpoint, concurrentConnections, maxQueueSize, maxRetriesPerRequest, callback, readCallback, readSize)
+            self.engine = burp.BurpRequestEngine(endpoint, concurrentConnections, maxQueueSize, maxRetriesPerRequest, callback, readCallback)
         elif(engine == Engine.THREADED):
             self.engine = burp.ThreadedRequestEngine(endpoint, concurrentConnections, maxQueueSize, readFreq, requestsPerConnection, maxRetriesPerRequest, callback, timeout, readCallback, readSize)
         elif(engine == Engine.ASYNC):