Fix multiple query parameter issue for dynamic backends (#270)
diff --git a/scripts/lua/policies/backendRouting.lua b/scripts/lua/policies/backendRouting.lua
index b89f7d9..17cdc34 100644
--- a/scripts/lua/policies/backendRouting.lua
+++ b/scripts/lua/policies/backendRouting.lua
@@ -57,11 +57,13 @@
end
if utils.tableContains(whitelist, u.host) then
ngx.req.set_uri(getUriPath(u.path))
- local query = ngx.req.get_uri_args()
- for k, v in pairs(u.query) do
- query[k] = v
+ -- Split the dynamicBackend url to get the query parameters in the exact order that it was passed in.
+ -- Don't use u.query here because it returns the parameters in an unordered lua table.
+ local split = {string.match(dynamicBackend, '([^?]*)?(.*)')}
+ local qs = split[2]
+ if qs ~= nil then
+ ngx.req.set_uri_args(qs)
end
- ngx.req.set_uri_args(query)
setUpstream(u)
else
request.err(403, 'Dynamic backend host not part of whitelist.')
