Diagnosing HTTP traffic in Wireshark can be a pain because it is not always clear from the Info column where the traffic is going. All those “GET / HTTP/1.1″ blend together. Fortunately it’s easy to add a column.
Go to Edit -> Preferences -> User Interface -> Columns. Click “+ Add”, and for “Field type” select Custom. The “Field name” box will now be enabled. In it type “http.host”. Click the “New column” text above to set the display name to “HTTP Host.” Hit OK and you are done!