client info cancel

src/clientimpl.h

@@ -26,7 +26,7 @@ struct Channel;
 // internal actions on an Operation
 struct OperationBase : public Operation
 {
-    const std::shared_ptr<Channel> chan;
+    std::shared_ptr<Channel> chan;
     uint32_t ioid;
 
     OperationBase(operation_t op, const std::shared_ptr<Channel>& chan);

src/clientintrospect.cpp

@@ -36,11 +36,19 @@ struct InfoOp : public OperationBase
         cancel();
     }
 
-    virtual void cancel() override final {}
+    virtual void cancel() override final {
+        auto context = chan->context;
+        context->tcp_loop.call([this](){
+            state = Done;
+            chan.reset();
+        });
+    }
 
     virtual void createOp() override final
     {
-        assert(state==Connecting);
+        if(state!=Connecting) {
+            return;
+        }
 
         auto& conn = chan->conn;