/* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
/** * Viaduct is a way for Application Services Rust components * (https://github.com/mozilla/application-services) to make network requests * using a trusted stack (gecko). * * The way it works is roughly as follows: * - First we register a callback using `viaduct_initialize` * (InitializeViaduct). This callback is stored on the Rust side * in a static variable, therefore InitializeViaduct() must be called only once. * * - When the Rust code needs to make a network request, our callback * (ViaductCallback) will be called with a protocol buffer describing * the request to make on their behalf. Note 1: The callback MUST be called from * a background thread as it is blocking. Note 2: It is our side responsibility * to call `viaduct_destroy_bytebuffer` on the buffer. * * - We set a semaphore to make the background thread wait while we make the * request on the main thread using nsIChannel. (ViaductRequest::MakeRequest) * * - Once a response is received, we allocate a bytebuffer to store the * response using `viaduct_alloc_bytebuffer` and unlock the semaphore. * (ViaductRequest::OnStopRequest) * * - The background thread is unlocked, and the callback returns the response to * the Rust caller. (ViaductCallback) * * - The Rust caller will free the response buffer we allocated earlier. * * Reference: * https://github.com/mozilla/application-services/blob/master/components/viaduct/README.md
*/
namespace mozilla {
// Should only be called once during startup to initialize the Viaduct callback. void InitializeViaduct();
} // namespace mozilla
#endif// mozilla_Viaduct_h
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