HTTP_URL_SLASH url_beg / match URL begining with "/"
HTTP_URL_STAR url * match URL equal to "*"
HTTP_CONTENT hdr_val(content-length) gt 0 match an existing content-length
+REQ_CONTENT req_len gt 0 match data in the request buffer
---------------+-----------------------------+---------------------------------
{ .name = "HTTP_URL_SLASH", .expr = {"url_beg","/",""}},
{ .name = "HTTP_URL_STAR", .expr = {"url","*",""}},
{ .name = "HTTP_CONTENT", .expr = {"hdr_val(content-length)","gt","0",""}},
+ { .name = "REQ_CONTENT", .expr = {"req_len","gt","0",""}},
{ .name = NULL, .expr = {""}}
};