Merge pull request #185 from joyieldInc/fix/issue124

avoid to use leader's connection for follow request

src/Request.cpp

@@ -103,6 +103,7 @@ Request::~Request()
 
 void Request::clear()
 {
+    mConn = nullptr;
     mRes = nullptr;
     mHead.clear();
     mReq.clear();
@@ -293,6 +294,7 @@ void Request::follow(Request* leader)
     if (leader == this) {
         return;
     }
+    mConn = leader->mConn;
     mType = leader->mType;
     mHead = leader->mHead;
     mReq = leader->mReq;

src/Request.h

@@ -71,7 +71,7 @@ public:
     bool isDone() const;
     AcceptConnection* connection() const
     {
-        return mLeader ? mLeader->mConn : mConn;
+        return mConn;
     }
     void detach()
     {