If you want to filter packets captured by 
Wireshark
by HTTP request method, i.e, by whether the packet contains a
GET, POST, HEAD, OPTIONS, PUT, DELETE, TRACE, or CONNECT method, you can use
the filter http.request.method==request_method where
request_method is the particular method in which you are interested.
E.g., http.request.method==GET.
If you want to filter on multiple methods, you can do so using the word
"OR" or ||, e.g. http.request.method==GET or 
http.request.method==POST. If you want to examine just those packets
for a specific IP address, e.g., 93.184.216.34, you can use a 
filter such as ip.addr==93.184.216.34 and http.request.method==GET
.