server, ui : Add support for HTTP ETags in llama-server (#23701)

* allow caching of ui elements in llama-server

* use fnv_hash

* Update tools/server/server-http.cpp

etag has to be set always

Co-authored-by: Xuan-Son Nguyen <thichthat@gmail.com>

---------

Co-authored-by: Xuan-Son Nguyen <thichthat@gmail.com>
This commit is contained in:
Markus Tavenrath 2026-05-28 20:21:24 +10:00 committed by GitHub
parent e8d2567429
commit d205df6812
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2 changed files with 29 additions and 4 deletions

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@ -318,12 +318,19 @@ bool server_http_context::init(const common_params & params) {
} else {
#if defined(LLAMA_UI_HAS_ASSETS)
auto serve_asset = [](const std::string & name, const char * mime, bool with_isolation_headers) {
return [name, mime, with_isolation_headers](const httplib::Request & /*req*/, httplib::Response & res) {
return [name, mime, with_isolation_headers](const httplib::Request & req, httplib::Response & res) {
const llama_ui_asset * a = llama_ui_find_asset(name.c_str());
if (!a) {
res.status = 404;
return false;
}
res.set_header("ETag", a->etag);
// Check If-None-Match for conditional GET (304 Not Modified)
if (const std::string & inm = req.get_header_value("If-None-Match");
!inm.empty() && inm == a->etag) {
res.status = 304;
return false;
}
if (with_isolation_headers) {
// COEP and COOP headers, required by pyodide (python interpreter)
res.set_header("Cross-Origin-Embedder-Policy", "require-corp");