Don't stop dissecting long lasting HTTP connections after 10 seconds timeout (#720)

* Set HTTP as protocol after parsing of first message

* Remove unnecessary local variable dissected

tap/extensions/http/main.go

@@ -100,7 +100,6 @@ func (d dissecting) Dissect(b *bufio.Reader, isClient bool, tcpID *api.TcpID, co
 		http2Assembler = createHTTP2Assembler(b)
 	}
 
-	dissected := false
 	switchingProtocolsHTTP2 := false
 	for {
 		if switchingProtocolsHTTP2 {
@@ -121,7 +120,7 @@ func (d dissecting) Dissect(b *bufio.Reader, isClient bool, tcpID *api.TcpID, co
 			} else if err != nil {
 				continue
 			}
-			dissected = true
+			superIdentifier.Protocol = &http11protocol
 		} else if isClient {
 			var req *http.Request
 			switchingProtocolsHTTP2, req, err = handleHTTP1ClientStream(b, tcpID, counterPair, superTimer, emitter, options)
@@ -130,7 +129,7 @@ func (d dissecting) Dissect(b *bufio.Reader, isClient bool, tcpID *api.TcpID, co
 			} else if err != nil {
 				continue
 			}
-			dissected = true
+			superIdentifier.Protocol = &http11protocol
 
 			// In case of an HTTP2 upgrade, duplicate the HTTP1 request into HTTP2 with stream ID 1
 			if switchingProtocolsHTTP2 {
@@ -161,14 +160,14 @@ func (d dissecting) Dissect(b *bufio.Reader, isClient bool, tcpID *api.TcpID, co
 			} else if err != nil {
 				continue
 			}
-			dissected = true
+			superIdentifier.Protocol = &http11protocol
 		}
 	}
 
-	if !dissected {
+	if superIdentifier.Protocol == nil {
 		return err
 	}
-	superIdentifier.Protocol = &http11protocol
+
 	return nil
 }