extern/whisper.cpp
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server: update abort mechanism to handle HTTP connection closure (#3112)

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Sacha Arbonel 2025-05-05 07:16:54 +02:00 committed by GitHub
parent 934d4b3083
commit bcf1ed0163
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1 changed files with 16 additions and 24 deletions
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examples/server/server.cpp
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@ -843,33 +843,25 @@ int main(int argc, char ** argv) {
wparams.progress_callback_user_data = &user_data;
}
// examples for abort mechanism
// in examples below, we do not abort the processing, but we could if the flag is set to true
// the callback is called before every encoder run - if it returns false, the processing is aborted
{
static bool is_aborted = false; // NOTE: this should be atomic to avoid data race
wparams.encoder_begin_callback = [](struct whisper_context * /*ctx*/, struct whisper_state * /*state*/, void * user_data) {
bool is_aborted = *(bool*)user_data;
return !is_aborted;
};
wparams.encoder_begin_callback_user_data = &is_aborted;
}
// the callback is called before every computation - if it returns true, the computation is aborted
{
static bool is_aborted = false; // NOTE: this should be atomic to avoid data race
wparams.abort_callback = [](void * user_data) {
bool is_aborted = *(bool*)user_data;
return is_aborted;
};
wparams.abort_callback_user_data = &is_aborted;
}
// tell whisper to abort if the HTTP connection closed
wparams.abort_callback = [](void *user_data) {
// user_data is a pointer to our Request
auto req_ptr = static_cast<const httplib::Request*>(user_data);
return req_ptr->is_connection_closed();
};
wparams.abort_callback_user_data = (void*)&req;
if (whisper_full_parallel(ctx, wparams, pcmf32.data(), pcmf32.size(), params.n_processors) != 0) {
// handle failure or early abort
if (req.is_connection_closed()) {
// log client disconnect
fprintf(stderr, "client disconnected, aborted processing\n");
res.status = 499; // Client Closed Request (nginx convention)
res.set_content("{\"error\":\"client disconnected\"}", "application/json");
return;
}
fprintf(stderr, "%s: failed to process audio\n", argv[0]);
res.status = 500; // Internal Server Error
const std::string error_resp = "{\"error\":\"failed to process audio\"}";
res.set_content(error_resp, "application/json");
return;