443 lines
15 KiB
Rust
443 lines
15 KiB
Rust
//! Crate `ruma_client` is a [Matrix](https://matrix.org/) client library.
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//!
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//! # Usage
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//!
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//! Begin by creating a `Client` type, usually using the `https` method for a client that supports
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//! secure connections, and then logging in:
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//!
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//! ```no_run
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//! use ruma_client::Client;
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//!
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//! let work = async {
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//! let homeserver_url = "https://example.com".parse().unwrap();
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//! let client = Client::https(homeserver_url, None);
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//!
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//! let session = client
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//! .log_in("@alice:example.com".to_string(), "secret".to_string(), None, None)
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//! .await?;
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//!
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//! // You're now logged in! Write the session to a file if you want to restore it later.
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//! // Then start using the API!
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//! # Result::<(), ruma_client::Error<_>>::Ok(())
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//! };
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//! ```
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//!
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//! You can also pass an existing session to the `Client` constructor to restore a previous session
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//! rather than calling `log_in`. This can also be used to create a session for an application service
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//! that does not need to log in, but uses the access_token directly:
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//!
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//! ```no_run
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//! use ruma_client::{Client, Session};
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//!
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//! let work = async {
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//! let homeserver_url = "https://example.com".parse().unwrap();
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//! let session = Session{access_token: "as_access_token".to_string(), identification: None};
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//! let client = Client::https(homeserver_url, Some(session));
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//!
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//! // make calls to the API
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//! };
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//! ```
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//!
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//! For the standard use case of synchronizing with the homeserver (i.e. getting all the latest
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//! events), use the `Client::sync`:
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//!
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//! ```no_run
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//! use std::time::Duration;
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//!
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//! # use futures_util::stream::{StreamExt as _, TryStreamExt as _};
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//! # use ruma_client::{api::r0::sync::sync_events::SetPresence, Client};
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//! # let homeserver_url = "https://example.com".parse().unwrap();
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//! # let client = Client::https(homeserver_url, None);
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//! # let next_batch_token = String::new();
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//! # async {
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//! let mut sync_stream = Box::pin(client.sync(
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//! None,
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//! Some(next_batch_token),
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//! SetPresence::Online,
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//! Some(Duration::from_secs(30)),
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//! ));
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//! while let Some(response) = sync_stream.try_next().await? {
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//! // Do something with the data in the response...
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//! }
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//! # Result::<(), ruma_client::Error<_>>::Ok(())
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//! # };
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//! ```
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//!
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//! The `Client` type also provides methods for registering a new account if you don't already have
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//! one with the given homeserver.
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//!
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//! Beyond these basic convenience methods, `ruma-client` gives you access to the entire Matrix
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//! client-server API via the `api` module. Each leaf module under this tree of modules contains
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//! the necessary types for one API endpoint. Simply call the module's `call` method, passing it
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//! the logged in `Client` and the relevant `Request` type. `call` will return a future that will
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//! resolve to the relevant `Response` type.
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//!
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//! For example:
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//!
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//! ```no_run
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//! # use ruma_client::Client;
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//! # let homeserver_url = "https://example.com".parse().unwrap();
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//! # let client = Client::https(homeserver_url, None);
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//! use std::convert::TryFrom;
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//!
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//! use ruma_client::api::r0::alias::get_alias;
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//! use ruma_identifiers::{RoomAliasId, RoomId};
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//!
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//! async {
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//! let response = client
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//! .request(get_alias::Request {
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//! room_alias: RoomAliasId::try_from("#example_room:example.com").unwrap(),
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//! })
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//! .await?;
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//!
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//! assert_eq!(response.room_id, RoomId::try_from("!n8f893n9:example.com").unwrap());
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//! # Result::<(), ruma_client::Error<_>>::Ok(())
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//! }
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//! # ;
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//! ```
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#![warn(rust_2018_idioms)]
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#![deny(
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missing_copy_implementations,
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missing_debug_implementations,
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missing_docs
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)]
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use std::{
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convert::TryFrom,
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str::FromStr,
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sync::{Arc, Mutex},
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time::Duration,
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};
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use futures_core::{
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future::Future,
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stream::{Stream, TryStream},
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};
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use futures_util::stream;
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use http::Response as HttpResponse;
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use hyper::{client::HttpConnector, Client as HyperClient, Uri};
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#[cfg(feature = "hyper-tls")]
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use hyper_tls::HttpsConnector;
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use ruma_api::{
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error::{FromHttpRequestError, FromHttpResponseError},
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Endpoint, Outgoing,
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};
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use ruma_identifiers::DeviceId;
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use std::collections::BTreeMap;
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use url::Url;
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pub use ruma_client_api as api;
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pub use ruma_events as events;
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pub use ruma_identifiers as identifiers;
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mod error;
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mod session;
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pub use self::{error::Error, session::Identification, session::Session};
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/// A client for the Matrix client-server API.
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#[derive(Debug)]
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pub struct Client<C>(Arc<ClientData<C>>);
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/// Data contained in Client's Rc
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#[derive(Debug)]
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struct ClientData<C> {
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/// The URL of the homeserver to connect to.
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homeserver_url: Url,
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/// The underlying HTTP client.
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hyper: HyperClient<C>,
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/// User session data.
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session: Mutex<Option<Session>>,
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}
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/// Non-secured variant of the client (using plain HTTP requests)
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pub type HttpClient = Client<HttpConnector>;
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impl HttpClient {
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/// Creates a new client for making HTTP requests to the given homeserver.
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pub fn new(homeserver_url: Url, session: Option<Session>) -> Self {
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Self(Arc::new(ClientData {
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homeserver_url,
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hyper: HyperClient::builder().build_http(),
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session: Mutex::new(session),
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}))
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}
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}
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/// Secured variant of the client (using HTTPS requests)
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#[cfg(feature = "tls")]
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pub type HttpsClient = Client<HttpsConnector<HttpConnector>>;
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#[cfg(feature = "tls")]
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impl HttpsClient {
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/// Creates a new client for making HTTPS requests to the given homeserver.
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pub fn https(homeserver_url: Url, session: Option<Session>) -> Self {
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let connector = HttpsConnector::new();
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Self(Arc::new(ClientData {
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homeserver_url,
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hyper: HyperClient::builder().build(connector),
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session: Mutex::new(session),
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}))
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}
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}
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impl<C> Client<C>
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where
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C: hyper::client::connect::Connect + Clone + Send + Sync + 'static,
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{
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/// Creates a new client using the given `hyper::Client`.
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///
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/// This allows the user to configure the details of HTTP as desired.
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pub fn custom(
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hyper_client: HyperClient<C>,
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homeserver_url: Url,
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session: Option<Session>,
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) -> Self {
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Self(Arc::new(ClientData {
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homeserver_url,
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hyper: hyper_client,
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session: Mutex::new(session),
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}))
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}
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/// Get a copy of the current `Session`, if any.
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///
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/// Useful for serializing and persisting the session to be restored later.
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pub fn session(&self) -> Option<Session> {
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self.0
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.session
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.lock()
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.expect("session mutex was poisoned")
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.clone()
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}
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/// Log in with a username and password.
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///
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/// In contrast to `api::r0::session::login::call()`, this method stores the
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/// session data returned by the endpoint in this client, instead of
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/// returning it.
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pub async fn log_in(
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&self,
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user: String,
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password: String,
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device_id: Option<DeviceId>,
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initial_device_display_name: Option<String>,
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) -> Result<Session, Error<api::Error>> {
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use api::r0::session::login;
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let response = self
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.request(login::Request {
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user: login::UserInfo::MatrixId(user),
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login_info: login::LoginInfo::Password { password },
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device_id,
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initial_device_display_name,
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})
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.await?;
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let session = Session {
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access_token: response.access_token,
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identification: Some(Identification {
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device_id: response.device_id,
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user_id: response.user_id,
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}),
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};
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*self.0.session.lock().unwrap() = Some(session.clone());
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Ok(session)
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}
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/// Register as a guest. In contrast to `api::r0::account::register::call()`,
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/// this method stores the session data returned by the endpoint in this
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/// client, instead of returning it.
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pub async fn register_guest(&self) -> Result<Session, Error<api::Error>> {
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use api::r0::account::register;
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let response = self
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.request(register::Request {
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auth: None,
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device_id: None,
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inhibit_login: false,
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initial_device_display_name: None,
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kind: Some(register::RegistrationKind::Guest),
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password: None,
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username: None,
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})
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.await?;
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let session = Session {
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// since we supply inhibit_login: false above, the access token needs to be there
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// TODO: maybe unwrap is not the best solution though
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access_token: response.access_token.unwrap(),
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identification: Some(Identification {
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// same as access_token
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device_id: response.device_id.unwrap(),
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user_id: response.user_id,
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}),
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};
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*self.0.session.lock().unwrap() = Some(session.clone());
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Ok(session)
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}
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/// Register as a new user on this server.
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///
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/// In contrast to `api::r0::account::register::call()`, this method stores
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/// the session data returned by the endpoint in this client, instead of
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/// returning it.
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///
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/// The username is the local part of the returned user_id. If it is
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/// omitted from this request, the server will generate one.
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pub async fn register_user(
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&self,
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username: Option<String>,
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password: String,
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) -> Result<Session, Error<api::Error>> {
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use api::r0::account::register;
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let response = self
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.request(register::Request {
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auth: None,
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device_id: None,
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inhibit_login: false,
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initial_device_display_name: None,
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kind: Some(register::RegistrationKind::User),
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password: Some(password),
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username,
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})
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.await?;
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let session = Session {
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// since we supply inhibit_login: false above, the access token needs to be there
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// TODO: maybe unwrap is not the best solution though
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access_token: response.access_token.unwrap(),
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identification: Some(Identification {
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// same as access_token
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device_id: response.device_id.unwrap(),
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user_id: response.user_id,
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}),
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};
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*self.0.session.lock().unwrap() = Some(session.clone());
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Ok(session)
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}
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/// Convenience method that represents repeated calls to the sync_events endpoint as a stream.
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///
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/// If the since parameter is None, the first Item might take a significant time to arrive and
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/// be deserialized, because it contains all events that have occurred in the whole lifetime of
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/// the logged-in users account and are visible to them.
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pub fn sync(
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&self,
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filter: Option<api::r0::sync::sync_events::Filter>,
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since: Option<String>,
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set_presence: api::r0::sync::sync_events::SetPresence,
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timeout: Option<Duration>,
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) -> impl Stream<Item = Result<api::r0::sync::sync_events::IncomingResponse, Error<api::Error>>>
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+ TryStream<Ok = api::r0::sync::sync_events::IncomingResponse, Error = Error<api::Error>>
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{
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use api::r0::sync::sync_events;
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let client = self.clone();
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stream::try_unfold(since, move |since| {
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let client = client.clone();
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let filter = filter.clone();
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async move {
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let response = client
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.request(sync_events::Request {
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filter,
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since,
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full_state: false,
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set_presence,
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timeout,
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})
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.await?;
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let next_batch_clone = response.next_batch.clone();
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Ok(Some((response, Some(next_batch_clone))))
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}
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})
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}
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/// Makes a request to a Matrix API endpoint.
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pub fn request<Request: Endpoint>(
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&self,
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request: Request,
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) -> impl Future<Output = Result<<Request::Response as Outgoing>::Incoming, Error<Request::ResponseError>>>
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// We need to duplicate Endpoint's where clauses because the compiler is not smart enough yet.
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// See https://github.com/rust-lang/rust/issues/54149
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where
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Request::Incoming: TryFrom<http::Request<Vec<u8>>, Error = FromHttpRequestError>,
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<Request::Response as Outgoing>::Incoming:
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TryFrom<http::Response<Vec<u8>>, Error = FromHttpResponseError<Request::ResponseError>>,
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{
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self.request_with_url_params(request, None)
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}
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/// Makes a request to a Matrix API endpoint including additional URL parameters.
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pub fn request_with_url_params<Request: Endpoint>(
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&self,
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request: Request,
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params: Option<BTreeMap<String, String>>,
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) -> impl Future<Output = Result<<Request::Response as Outgoing>::Incoming, Error<Request::ResponseError>>>
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// We need to duplicate Endpoint's where clauses because the compiler is not smart enough yet.
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// See https://github.com/rust-lang/rust/issues/54149
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where
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Request::Incoming: TryFrom<http::Request<Vec<u8>>, Error = FromHttpRequestError>,
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<Request::Response as Outgoing>::Incoming:
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TryFrom<http::Response<Vec<u8>>, Error = FromHttpResponseError<Request::ResponseError>>,
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{
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let client = self.0.clone();
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let mut url = client.homeserver_url.clone();
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async move {
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let mut hyper_request = request.try_into()?.map(hyper::Body::from);
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{
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let uri = hyper_request.uri();
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url.set_path(uri.path());
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url.set_query(uri.query());
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if let Some(params) = params {
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for (key, value) in params {
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url.query_pairs_mut().append_pair(&key, &value);
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}
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}
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if Request::METADATA.requires_authentication {
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if let Some(ref session) = *client.session.lock().unwrap() {
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url.query_pairs_mut()
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.append_pair("access_token", &session.access_token);
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} else {
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return Err(Error::AuthenticationRequired);
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}
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}
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}
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*hyper_request.uri_mut() = Uri::from_str(url.as_ref())?;
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let hyper_response = client.hyper.request(hyper_request).await?;
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let (head, body) = hyper_response.into_parts();
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// FIXME: We read the response into a contiguous buffer here (not actually required for
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// deserialization) and then copy the whole thing to convert from Bytes to Vec<u8>.
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let full_body = hyper::body::to_bytes(body).await?;
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let full_response = HttpResponse::from_parts(head, full_body.as_ref().to_owned());
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Ok(<Request::Response as Outgoing>::Incoming::try_from(
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full_response,
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)?)
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}
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}
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}
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impl<C> Clone for Client<C> {
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fn clone(&self) -> Self {
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Self(self.0.clone())
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}
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}
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