zenhttp: add FollowRedirects option to HttpClient (#982)

- Adds `FollowRedirects` (default `false`) and `MaxRedirects` (default `5`) fields to `HttpClientSettings`.
- When `FollowRedirects` is enabled, the curl backend sets `CURLOPT_FOLLOWLOCATION` and `CURLOPT_MAXREDIRS` so HTTP 3xx redirects are handled transparently in the transport layer — callers no longer need to parse `Location` headers and re-issue requests themselves.
- Defaults are off, so existing callers see no behavior change.

2 files changed, 13 insertions, 0 deletions

diff --git a/src/zenhttp/clients/httpclientcurl.cpp b/src/zenhttp/clients/httpclientcurl.cpp
index 3be7337c1..ddf6cb58f 100644
--- a/src/zenhttp/clients/httpclientcurl.cpp
+++ b/src/zenhttp/clients/httpclientcurl.cpp
@@ -607,6 +607,12 @@ CurlHttpClient::AllocSession(std::string_view ResourcePath, const KeyValueMap& P
 	// Disable signal handling for thread safety
 	curl_easy_setopt(Handle, CURLOPT_NOSIGNAL, 1L);
 
+	if (m_ConnectionSettings.FollowRedirects)
+	{
+		curl_easy_setopt(Handle, CURLOPT_FOLLOWLOCATION, 1L);
+		curl_easy_setopt(Handle, CURLOPT_MAXREDIRS, static_cast<long>(m_ConnectionSettings.MaxRedirects));
+	}
+
 	if (m_ConnectionSettings.ForbidReuseConnection)
 	{
 		curl_easy_setopt(Handle, CURLOPT_FORBID_REUSE, 1L);
diff --git a/src/zenhttp/include/zenhttp/httpclient.h b/src/zenhttp/include/zenhttp/httpclient.h
index e199b700f..8da94524e 100644
--- a/src/zenhttp/include/zenhttp/httpclient.h
+++ b/src/zenhttp/include/zenhttp/httpclient.h
@@ -120,6 +120,13 @@ struct HttpClientSettings
 	/// the system default CA store.
 	std::string CaBundlePath;
 
+	/// Automatically follow HTTP 3xx redirects. When true, curl handles
+	/// redirects internally (up to MaxRedirects hops). Default: false.
+	bool FollowRedirects = false;
+
+	/// Maximum number of redirects to follow when FollowRedirects is true.
+	int MaxRedirects = 5;
+
 	/// HTTP status codes that are expected and should not be logged as warnings.
 	/// 404 is always treated as expected regardless of this list.
 	std::vector<HttpResponseCode> ExpectedErrorCodes;