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</pre><pre class="rust"><code><span class="kw">use </span><span class="kw">super</span>::<span class="kw">super</span>::service;
<span class="kw">use </span><span class="kw">super</span>::Channel;
<span class="attribute">#[cfg(feature = <span class="string">&quot;tls&quot;</span>)]
</span><span class="kw">use </span><span class="kw">super</span>::ClientTlsConfig;
<span class="attribute">#[cfg(feature = <span class="string">&quot;tls&quot;</span>)]
</span><span class="kw">use </span><span class="kw">crate</span>::transport::service::TlsConnector;
<span class="kw">use </span><span class="kw">crate</span>::transport::Error;
<span class="kw">use </span>bytes::Bytes;
<span class="kw">use </span>http::{
uri::{InvalidUri, Uri},
HeaderValue,
};
<span class="kw">use </span>std::{
convert::{TryFrom, TryInto},
fmt,
str::FromStr,
time::Duration,
};
<span class="kw">use </span>tower::make::MakeConnection;
<span class="doccomment">/// Channel builder.
///
/// This struct is used to build and configure HTTP/2 channels.
</span><span class="attribute">#[derive(Clone)]
</span><span class="kw">pub struct </span>Endpoint {
<span class="kw">pub</span>(<span class="kw">crate</span>) uri: Uri,
<span class="kw">pub</span>(<span class="kw">crate</span>) user_agent: <span class="prelude-ty">Option</span>&lt;HeaderValue&gt;,
<span class="kw">pub</span>(<span class="kw">crate</span>) timeout: <span class="prelude-ty">Option</span>&lt;Duration&gt;,
<span class="kw">pub</span>(<span class="kw">crate</span>) concurrency_limit: <span class="prelude-ty">Option</span>&lt;usize&gt;,
<span class="kw">pub</span>(<span class="kw">crate</span>) rate_limit: <span class="prelude-ty">Option</span>&lt;(u64, Duration)&gt;,
<span class="attribute">#[cfg(feature = <span class="string">&quot;tls&quot;</span>)]
</span><span class="kw">pub</span>(<span class="kw">crate</span>) tls: <span class="prelude-ty">Option</span>&lt;TlsConnector&gt;,
<span class="kw">pub</span>(<span class="kw">crate</span>) buffer_size: <span class="prelude-ty">Option</span>&lt;usize&gt;,
<span class="kw">pub</span>(<span class="kw">crate</span>) init_stream_window_size: <span class="prelude-ty">Option</span>&lt;u32&gt;,
<span class="kw">pub</span>(<span class="kw">crate</span>) init_connection_window_size: <span class="prelude-ty">Option</span>&lt;u32&gt;,
<span class="kw">pub</span>(<span class="kw">crate</span>) tcp_keepalive: <span class="prelude-ty">Option</span>&lt;Duration&gt;,
<span class="kw">pub</span>(<span class="kw">crate</span>) tcp_nodelay: bool,
<span class="kw">pub</span>(<span class="kw">crate</span>) http2_keep_alive_interval: <span class="prelude-ty">Option</span>&lt;Duration&gt;,
<span class="kw">pub</span>(<span class="kw">crate</span>) http2_keep_alive_timeout: <span class="prelude-ty">Option</span>&lt;Duration&gt;,
<span class="kw">pub</span>(<span class="kw">crate</span>) http2_keep_alive_while_idle: <span class="prelude-ty">Option</span>&lt;bool&gt;,
<span class="kw">pub</span>(<span class="kw">crate</span>) connect_timeout: <span class="prelude-ty">Option</span>&lt;Duration&gt;,
<span class="kw">pub</span>(<span class="kw">crate</span>) http2_adaptive_window: <span class="prelude-ty">Option</span>&lt;bool&gt;,
}
<span class="kw">impl </span>Endpoint {
<span class="comment">// FIXME: determine if we want to expose this or not. This is really
// just used in codegen for a shortcut.
</span><span class="attribute">#[doc(hidden)]
</span><span class="kw">pub fn </span>new&lt;D&gt;(dst: D) -&gt; <span class="prelude-ty">Result</span>&lt;<span class="self">Self</span>, Error&gt;
<span class="kw">where
</span>D: TryInto&lt;<span class="self">Self</span>&gt;,
D::Error: Into&lt;<span class="kw">crate</span>::Error&gt;,
{
<span class="kw">let </span>me = dst.try_into().map_err(|e| Error::from_source(e.into()))<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(me)
}
<span class="doccomment">/// Convert an `Endpoint` from a static string.
///
/// # Panics
///
/// This function panics if the argument is an invalid URI.
///
/// ```
/// # use tonic::transport::Endpoint;
/// Endpoint::from_static(&quot;https://example.com&quot;);
/// ```
</span><span class="kw">pub fn </span>from_static(s: <span class="kw-2">&amp;</span><span class="lifetime">&#39;static </span>str) -&gt; <span class="self">Self </span>{
<span class="kw">let </span>uri = Uri::from_static(s);
<span class="self">Self</span>::from(uri)
}
<span class="doccomment">/// Convert an `Endpoint` from shared bytes.
///
/// ```
/// # use tonic::transport::Endpoint;
/// Endpoint::from_shared(&quot;https://example.com&quot;.to_string());
/// ```
</span><span class="kw">pub fn </span>from_shared(s: <span class="kw">impl </span>Into&lt;Bytes&gt;) -&gt; <span class="prelude-ty">Result</span>&lt;<span class="self">Self</span>, InvalidUri&gt; {
<span class="kw">let </span>uri = Uri::from_maybe_shared(s.into())<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(<span class="self">Self</span>::from(uri))
}
<span class="doccomment">/// Set a custom user-agent header.
///
/// `user_agent` will be prepended to Tonic&#39;s default user-agent string (`tonic/x.x.x`).
/// It must be a value that can be converted into a valid `http::HeaderValue` or building
/// the endpoint will fail.
/// ```
/// # use tonic::transport::Endpoint;
/// # let mut builder = Endpoint::from_static(&quot;https://example.com&quot;);
/// builder.user_agent(&quot;Greeter&quot;).expect(&quot;Greeter should be a valid header value&quot;);
/// // user-agent: &quot;Greeter tonic/x.x.x&quot;
/// ```
</span><span class="kw">pub fn </span>user_agent&lt;T&gt;(<span class="self">self</span>, user_agent: T) -&gt; <span class="prelude-ty">Result</span>&lt;<span class="self">Self</span>, Error&gt;
<span class="kw">where
</span>T: TryInto&lt;HeaderValue&gt;,
{
user_agent
.try_into()
.map(|ua| Endpoint {
user_agent: <span class="prelude-val">Some</span>(ua),
..<span class="self">self
</span>})
.map_err(|<span class="kw">_</span>| Error::new_invalid_user_agent())
}
<span class="doccomment">/// Apply a timeout to each request.
///
/// ```
/// # use tonic::transport::Endpoint;
/// # use std::time::Duration;
/// # let mut builder = Endpoint::from_static(&quot;https://example.com&quot;);
/// builder.timeout(Duration::from_secs(5));
/// ```
///
/// # Notes
///
/// This does **not** set the timeout metadata (`grpc-timeout` header) on
/// the request, meaning the server will not be informed of this timeout,
/// for that use [`Request::set_timeout`].
///
/// [`Request::set_timeout`]: crate::Request::set_timeout
</span><span class="kw">pub fn </span>timeout(<span class="self">self</span>, dur: Duration) -&gt; <span class="self">Self </span>{
Endpoint {
timeout: <span class="prelude-val">Some</span>(dur),
..<span class="self">self
</span>}
}
<span class="doccomment">/// Apply a timeout to connecting to the uri.
///
/// Defaults to no timeout.
///
/// ```
/// # use tonic::transport::Endpoint;
/// # use std::time::Duration;
/// # let mut builder = Endpoint::from_static(&quot;https://example.com&quot;);
/// builder.connect_timeout(Duration::from_secs(5));
/// ```
</span><span class="kw">pub fn </span>connect_timeout(<span class="self">self</span>, dur: Duration) -&gt; <span class="self">Self </span>{
Endpoint {
connect_timeout: <span class="prelude-val">Some</span>(dur),
..<span class="self">self
</span>}
}
<span class="doccomment">/// Set whether TCP keepalive messages are enabled on accepted connections.
///
/// If `None` is specified, keepalive is disabled, otherwise the duration
/// specified will be the time to remain idle before sending TCP keepalive
/// probes.
///
/// Default is no keepalive (`None`)
///
</span><span class="kw">pub fn </span>tcp_keepalive(<span class="self">self</span>, tcp_keepalive: <span class="prelude-ty">Option</span>&lt;Duration&gt;) -&gt; <span class="self">Self </span>{
Endpoint {
tcp_keepalive,
..<span class="self">self
</span>}
}
<span class="doccomment">/// Apply a concurrency limit to each request.
///
/// ```
/// # use tonic::transport::Endpoint;
/// # let mut builder = Endpoint::from_static(&quot;https://example.com&quot;);
/// builder.concurrency_limit(256);
/// ```
</span><span class="kw">pub fn </span>concurrency_limit(<span class="self">self</span>, limit: usize) -&gt; <span class="self">Self </span>{
Endpoint {
concurrency_limit: <span class="prelude-val">Some</span>(limit),
..<span class="self">self
</span>}
}
<span class="doccomment">/// Apply a rate limit to each request.
///
/// ```
/// # use tonic::transport::Endpoint;
/// # use std::time::Duration;
/// # let mut builder = Endpoint::from_static(&quot;https://example.com&quot;);
/// builder.rate_limit(32, Duration::from_secs(1));
/// ```
</span><span class="kw">pub fn </span>rate_limit(<span class="self">self</span>, limit: u64, duration: Duration) -&gt; <span class="self">Self </span>{
Endpoint {
rate_limit: <span class="prelude-val">Some</span>((limit, duration)),
..<span class="self">self
</span>}
}
<span class="doccomment">/// Sets the [`SETTINGS_INITIAL_WINDOW_SIZE`][spec] option for HTTP2
/// stream-level flow control.
///
/// Default is 65,535
///
/// [spec]: https://http2.github.io/http2-spec/#SETTINGS_INITIAL_WINDOW_SIZE
</span><span class="kw">pub fn </span>initial_stream_window_size(<span class="self">self</span>, sz: <span class="kw">impl </span>Into&lt;<span class="prelude-ty">Option</span>&lt;u32&gt;&gt;) -&gt; <span class="self">Self </span>{
Endpoint {
init_stream_window_size: sz.into(),
..<span class="self">self
</span>}
}
<span class="doccomment">/// Sets the max connection-level flow control for HTTP2
///
/// Default is 65,535
</span><span class="kw">pub fn </span>initial_connection_window_size(<span class="self">self</span>, sz: <span class="kw">impl </span>Into&lt;<span class="prelude-ty">Option</span>&lt;u32&gt;&gt;) -&gt; <span class="self">Self </span>{
Endpoint {
init_connection_window_size: sz.into(),
..<span class="self">self
</span>}
}
<span class="doccomment">/// Configures TLS for the endpoint.
</span><span class="attribute">#[cfg(feature = <span class="string">&quot;tls&quot;</span>)]
#[cfg_attr(docsrs, doc(cfg(feature = <span class="string">&quot;tls&quot;</span>)))]
</span><span class="kw">pub fn </span>tls_config(<span class="self">self</span>, tls_config: ClientTlsConfig) -&gt; <span class="prelude-ty">Result</span>&lt;<span class="self">Self</span>, Error&gt; {
<span class="prelude-val">Ok</span>(Endpoint {
tls: <span class="prelude-val">Some</span>(
tls_config
.tls_connector(<span class="self">self</span>.uri.clone())
.map_err(Error::from_source)<span class="question-mark">?</span>,
),
..<span class="self">self
</span>})
}
<span class="doccomment">/// Set the value of `TCP_NODELAY` option for accepted connections. Enabled by default.
</span><span class="kw">pub fn </span>tcp_nodelay(<span class="self">self</span>, enabled: bool) -&gt; <span class="self">Self </span>{
Endpoint {
tcp_nodelay: enabled,
..<span class="self">self
</span>}
}
<span class="doccomment">/// Set http2 KEEP_ALIVE_INTERVAL. Uses `hyper`&#39;s default otherwise.
</span><span class="kw">pub fn </span>http2_keep_alive_interval(<span class="self">self</span>, interval: Duration) -&gt; <span class="self">Self </span>{
Endpoint {
http2_keep_alive_interval: <span class="prelude-val">Some</span>(interval),
..<span class="self">self
</span>}
}
<span class="doccomment">/// Set http2 KEEP_ALIVE_TIMEOUT. Uses `hyper`&#39;s default otherwise.
</span><span class="kw">pub fn </span>keep_alive_timeout(<span class="self">self</span>, duration: Duration) -&gt; <span class="self">Self </span>{
Endpoint {
http2_keep_alive_timeout: <span class="prelude-val">Some</span>(duration),
..<span class="self">self
</span>}
}
<span class="doccomment">/// Set http2 KEEP_ALIVE_WHILE_IDLE. Uses `hyper`&#39;s default otherwise.
</span><span class="kw">pub fn </span>keep_alive_while_idle(<span class="self">self</span>, enabled: bool) -&gt; <span class="self">Self </span>{
Endpoint {
http2_keep_alive_while_idle: <span class="prelude-val">Some</span>(enabled),
..<span class="self">self
</span>}
}
<span class="doccomment">/// Sets whether to use an adaptive flow control. Uses `hyper`&#39;s default otherwise.
</span><span class="kw">pub fn </span>http2_adaptive_window(<span class="self">self</span>, enabled: bool) -&gt; <span class="self">Self </span>{
Endpoint {
http2_adaptive_window: <span class="prelude-val">Some</span>(enabled),
..<span class="self">self
</span>}
}
<span class="doccomment">/// Create a channel from this config.
</span><span class="kw">pub async fn </span>connect(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="prelude-ty">Result</span>&lt;Channel, Error&gt; {
<span class="kw">let </span><span class="kw-2">mut </span>http = hyper::client::connect::HttpConnector::new();
http.enforce_http(<span class="bool-val">false</span>);
http.set_nodelay(<span class="self">self</span>.tcp_nodelay);
http.set_keepalive(<span class="self">self</span>.tcp_keepalive);
<span class="attribute">#[cfg(feature = <span class="string">&quot;tls&quot;</span>)]
</span><span class="kw">let </span>connector = service::connector(http, <span class="self">self</span>.tls.clone());
<span class="attribute">#[cfg(not(feature = <span class="string">&quot;tls&quot;</span>))]
</span><span class="kw">let </span>connector = service::connector(http);
<span class="kw">if let </span><span class="prelude-val">Some</span>(connect_timeout) = <span class="self">self</span>.connect_timeout {
<span class="kw">let </span><span class="kw-2">mut </span>connector = hyper_timeout::TimeoutConnector::new(connector);
connector.set_connect_timeout(<span class="prelude-val">Some</span>(connect_timeout));
Channel::connect(connector, <span class="self">self</span>.clone()).<span class="kw">await
</span>} <span class="kw">else </span>{
Channel::connect(connector, <span class="self">self</span>.clone()).<span class="kw">await
</span>}
}
<span class="doccomment">/// Create a channel from this config.
///
/// The channel returned by this method does not attempt to connect to the endpoint until first
/// use.
</span><span class="kw">pub fn </span>connect_lazy(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; Channel {
<span class="kw">let </span><span class="kw-2">mut </span>http = hyper::client::connect::HttpConnector::new();
http.enforce_http(<span class="bool-val">false</span>);
http.set_nodelay(<span class="self">self</span>.tcp_nodelay);
http.set_keepalive(<span class="self">self</span>.tcp_keepalive);
<span class="attribute">#[cfg(feature = <span class="string">&quot;tls&quot;</span>)]
</span><span class="kw">let </span>connector = service::connector(http, <span class="self">self</span>.tls.clone());
<span class="attribute">#[cfg(not(feature = <span class="string">&quot;tls&quot;</span>))]
</span><span class="kw">let </span>connector = service::connector(http);
<span class="kw">if let </span><span class="prelude-val">Some</span>(connect_timeout) = <span class="self">self</span>.connect_timeout {
<span class="kw">let </span><span class="kw-2">mut </span>connector = hyper_timeout::TimeoutConnector::new(connector);
connector.set_connect_timeout(<span class="prelude-val">Some</span>(connect_timeout));
Channel::new(connector, <span class="self">self</span>.clone())
} <span class="kw">else </span>{
Channel::new(connector, <span class="self">self</span>.clone())
}
}
<span class="doccomment">/// Connect with a custom connector.
///
/// This allows you to build a [Channel](struct.Channel.html) that uses a non-HTTP transport.
/// See the `uds` example for an example on how to use this function to build channel that
/// uses a Unix socket transport.
///
/// The [`connect_timeout`](Endpoint::connect_timeout) will still be applied.
</span><span class="kw">pub async fn </span>connect_with_connector&lt;C&gt;(<span class="kw-2">&amp;</span><span class="self">self</span>, connector: C) -&gt; <span class="prelude-ty">Result</span>&lt;Channel, Error&gt;
<span class="kw">where
</span>C: MakeConnection&lt;Uri&gt; + Send + <span class="lifetime">&#39;static</span>,
C::Connection: Unpin + Send + <span class="lifetime">&#39;static</span>,
C::Future: Send + <span class="lifetime">&#39;static</span>,
<span class="kw">crate</span>::Error: From&lt;C::Error&gt; + Send + <span class="lifetime">&#39;static</span>,
{
<span class="attribute">#[cfg(feature = <span class="string">&quot;tls&quot;</span>)]
</span><span class="kw">let </span>connector = service::connector(connector, <span class="self">self</span>.tls.clone());
<span class="attribute">#[cfg(not(feature = <span class="string">&quot;tls&quot;</span>))]
</span><span class="kw">let </span>connector = service::connector(connector);
<span class="kw">if let </span><span class="prelude-val">Some</span>(connect_timeout) = <span class="self">self</span>.connect_timeout {
<span class="kw">let </span><span class="kw-2">mut </span>connector = hyper_timeout::TimeoutConnector::new(connector);
connector.set_connect_timeout(<span class="prelude-val">Some</span>(connect_timeout));
Channel::connect(connector, <span class="self">self</span>.clone()).<span class="kw">await
</span>} <span class="kw">else </span>{
Channel::connect(connector, <span class="self">self</span>.clone()).<span class="kw">await
</span>}
}
<span class="doccomment">/// Connect with a custom connector lazily.
///
/// This allows you to build a [Channel](struct.Channel.html) that uses a non-HTTP transport
/// connec to it lazily.
///
/// See the `uds` example for an example on how to use this function to build channel that
/// uses a Unix socket transport.
</span><span class="kw">pub fn </span>connect_with_connector_lazy&lt;C&gt;(<span class="kw-2">&amp;</span><span class="self">self</span>, connector: C) -&gt; <span class="prelude-ty">Result</span>&lt;Channel, Error&gt;
<span class="kw">where
</span>C: MakeConnection&lt;Uri&gt; + Send + <span class="lifetime">&#39;static</span>,
C::Connection: Unpin + Send + <span class="lifetime">&#39;static</span>,
C::Future: Send + <span class="lifetime">&#39;static</span>,
<span class="kw">crate</span>::Error: From&lt;C::Error&gt; + Send + <span class="lifetime">&#39;static</span>,
{
<span class="attribute">#[cfg(feature = <span class="string">&quot;tls&quot;</span>)]
</span><span class="kw">let </span>connector = service::connector(connector, <span class="self">self</span>.tls.clone());
<span class="attribute">#[cfg(not(feature = <span class="string">&quot;tls&quot;</span>))]
</span><span class="kw">let </span>connector = service::connector(connector);
<span class="prelude-val">Ok</span>(Channel::new(connector, <span class="self">self</span>.clone()))
}
<span class="doccomment">/// Get the endpoint uri.
///
/// ```
/// # use tonic::transport::Endpoint;
/// # use http::Uri;
/// let endpoint = Endpoint::from_static(&quot;https://example.com&quot;);
///
/// assert_eq!(endpoint.uri(), &amp;Uri::from_static(&quot;https://example.com&quot;));
/// ```
</span><span class="kw">pub fn </span>uri(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">&amp;</span>Uri {
<span class="kw-2">&amp;</span><span class="self">self</span>.uri
}
}
<span class="kw">impl </span>From&lt;Uri&gt; <span class="kw">for </span>Endpoint {
<span class="kw">fn </span>from(uri: Uri) -&gt; <span class="self">Self </span>{
<span class="self">Self </span>{
uri,
user_agent: <span class="prelude-val">None</span>,
concurrency_limit: <span class="prelude-val">None</span>,
rate_limit: <span class="prelude-val">None</span>,
timeout: <span class="prelude-val">None</span>,
<span class="attribute">#[cfg(feature = <span class="string">&quot;tls&quot;</span>)]
</span>tls: <span class="prelude-val">None</span>,
buffer_size: <span class="prelude-val">None</span>,
init_stream_window_size: <span class="prelude-val">None</span>,
init_connection_window_size: <span class="prelude-val">None</span>,
tcp_keepalive: <span class="prelude-val">None</span>,
tcp_nodelay: <span class="bool-val">true</span>,
http2_keep_alive_interval: <span class="prelude-val">None</span>,
http2_keep_alive_timeout: <span class="prelude-val">None</span>,
http2_keep_alive_while_idle: <span class="prelude-val">None</span>,
connect_timeout: <span class="prelude-val">None</span>,
http2_adaptive_window: <span class="prelude-val">None</span>,
}
}
}
<span class="kw">impl </span>TryFrom&lt;Bytes&gt; <span class="kw">for </span>Endpoint {
<span class="kw">type </span>Error = InvalidUri;
<span class="kw">fn </span>try_from(t: Bytes) -&gt; <span class="prelude-ty">Result</span>&lt;<span class="self">Self</span>, <span class="self">Self</span>::Error&gt; {
<span class="self">Self</span>::from_shared(t)
}
}
<span class="kw">impl </span>TryFrom&lt;String&gt; <span class="kw">for </span>Endpoint {
<span class="kw">type </span>Error = InvalidUri;
<span class="kw">fn </span>try_from(t: String) -&gt; <span class="prelude-ty">Result</span>&lt;<span class="self">Self</span>, <span class="self">Self</span>::Error&gt; {
<span class="self">Self</span>::from_shared(t.into_bytes())
}
}
<span class="kw">impl </span>TryFrom&lt;<span class="kw-2">&amp;</span><span class="lifetime">&#39;static </span>str&gt; <span class="kw">for </span>Endpoint {
<span class="kw">type </span>Error = InvalidUri;
<span class="kw">fn </span>try_from(t: <span class="kw-2">&amp;</span><span class="lifetime">&#39;static </span>str) -&gt; <span class="prelude-ty">Result</span>&lt;<span class="self">Self</span>, <span class="self">Self</span>::Error&gt; {
<span class="self">Self</span>::from_shared(t.as_bytes())
}
}
<span class="kw">impl </span>fmt::Debug <span class="kw">for </span>Endpoint {
<span class="kw">fn </span>fmt(<span class="kw-2">&amp;</span><span class="self">self</span>, f: <span class="kw-2">&amp;mut </span>fmt::Formatter&lt;<span class="lifetime">&#39;_</span>&gt;) -&gt; fmt::Result {
f.debug_struct(<span class="string">&quot;Endpoint&quot;</span>).finish()
}
}
<span class="kw">impl </span>FromStr <span class="kw">for </span>Endpoint {
<span class="kw">type </span><span class="prelude-val">Err </span>= InvalidUri;
<span class="kw">fn </span>from_str(s: <span class="kw-2">&amp;</span>str) -&gt; <span class="prelude-ty">Result</span>&lt;<span class="self">Self</span>, <span class="self">Self</span>::Err&gt; {
<span class="self">Self</span>::try_from(s.to_string())
}
}
</code></pre></div>
</section></div></main><div id="rustdoc-vars" data-root-path="../../../../" data-current-crate="tonic" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html>