抓包 Wireshark

捕获过滤器

port 50893

显示过滤器

tcp.port == 20051 and http contains "barcode"
http.request.uri contains "barcode" and http.request.method=="POST"

http.response_for.uri  contains "barcode"
http.time>1 and (tcp.port==20050 || tcp.port==20051)