Use RFC2396_PARSER explicitly to avoid the warning.

CHANGELOG.md

@@ -11,6 +11,7 @@
 - Default to `internal_error` error type for OpenTelemetry spans [#2473](https://github.com/getsentry/sentry-ruby/pull/2473)
 - Improve `before_send` and `before_send_transaction`'s return value handling ([#2504](https://github.com/getsentry/sentry-ruby/pull/2504))
 - Fix a crash when calling `Sentry.get_main_hub` in a trap context ([#2510](https://github.com/getsentry/sentry-ruby/pull/2510))
+- Use `URI::RFC2396_PARSER.escape` explicitly to remove warning logs to stderr ([#2509](https://github.com/getsentry/sentry-ruby/pull/2509))
 
 ### Internal
 

sentry-ruby/lib/sentry/net/http.rb

@@ -13,6 +13,7 @@ module HTTP
       OP_NAME = "http.client"
       SPAN_ORIGIN = "auto.http.net_http"
       BREADCRUMB_CATEGORY = "net.http"
+      URI_PARSER = URI.const_defined?("RFC2396_PARSER") ? URI::RFC2396_PARSER : URI::DEFAULT_PARSER
 
       # To explain how the entire thing works, we need to know how the original Net::HTTP#request works
       # Here's part of its definition. As you can see, it usually calls itself inside a #start block
@@ -66,7 +67,7 @@ def extract_request_info(req)
         # IPv6 url could look like '::1/path', and that won't parse without
         # wrapping it in square brackets.
         hostname = address =~ Resolv::IPv6::Regex ? "[#{address}]" : address
-        uri = req.uri || URI.parse(URI::DEFAULT_PARSER.escape("#{use_ssl? ? 'https' : 'http'}://#{hostname}#{req.path}"))
+        uri = req.uri || URI.parse(URI_PARSER.escape("#{use_ssl? ? 'https' : 'http'}://#{hostname}#{req.path}"))
         url = "#{uri.scheme}://#{uri.host}#{uri.path}" rescue uri.to_s
 
         result = { method: req.method, url: url }