src/qlog/events/mod.rs.html - third_party/rust-mirrors/quiche - Git at Google

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 </pre></div><pre class="rust"><code><span class="comment">// Copyright (C) 2021, Cloudflare, Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright notice,
 //       this list of conditions and the following disclaimer.
 //
 //     * Redistributions in binary form must reproduce the above copyright
 //       notice, this list of conditions and the following disclaimer in the
 //       documentation and/or other materials provided with the distribution.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 // IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 // THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 </span><span class="kw">use </span><span class="kw">crate</span>::Bytes;
 <span class="kw">use </span><span class="kw">crate</span>::Token;
 <span class="kw">use </span>h3::<span class="kw-2">*</span>;
 <span class="kw">use </span>qpack::<span class="kw-2">*</span>;
 <span class="kw">use </span>quic::<span class="kw-2">*</span>;

 <span class="kw">use </span>connectivity::ConnectivityEventType;

 <span class="kw">use </span>serde::Deserialize;
 <span class="kw">use </span>serde::Serialize;

 <span class="kw">use </span>std::collections::BTreeMap;

 <span class="kw">pub type </span>ExData = BTreeMap&lt;String, serde_json::Value&gt;;

 <span class="attr">#[derive(Serialize, Deserialize, Clone, Copy, PartialEq, Eq, Debug, Default)]
 #[serde(untagged)]
 </span><span class="kw">pub enum </span>EventType {
     ConnectivityEventType(ConnectivityEventType),

     TransportEventType(TransportEventType),

     SecurityEventType(SecurityEventType),

     RecoveryEventType(RecoveryEventType),

     Http3EventType(Http3EventType),

     QpackEventType(QpackEventType),

     GenericEventType(GenericEventType),

     <span class="attr">#[default]
     </span><span class="prelude-val">None</span>,
 }

 <span class="attr">#[derive(Serialize, Deserialize, Clone, PartialEq, Eq, Debug)]
 </span><span class="kw">pub enum </span>TimeFormat {
     Absolute,
     Delta,
     Relative,
 }

 <span class="attr">#[serde_with::skip_serializing_none]
 #[derive(Serialize, Deserialize, Clone, Debug)]
 </span><span class="kw">pub struct </span>Event {
     <span class="kw">pub </span>time: f32,

     <span class="comment">// Strictly, the qlog 02 spec says we should have a name field in the
     // `Event` structure. However, serde's autogenerated Deserialize code
     // struggles to read Events properly because the `EventData` types often
     // alias. In order to work around that, we use can use a trick that will
     // give serde autogen all the information that it needs while also produced
     // a legal qlog. Specifically, strongly linking an EventData enum variant
     // with the wire-format name.
     //
     // The trick is to use Adjacent Tagging
     // (https://serde.rs/enum-representations.html#adjacently-tagged) with
     // Struct flattening (https://serde.rs/attr-flatten.html). At a high level
     // this first creates an `EventData` JSON object:
     //
     // {name: &lt;enum variant name&gt;, data: enum variant data }
     //
     // and then flattens those fields into the `Event` object.
     </span><span class="attr">#[serde(flatten)]
     </span><span class="kw">pub </span>data: EventData,

     <span class="attr">#[serde(flatten)]
     </span><span class="kw">pub </span>ex_data: ExData,

     <span class="kw">pub </span>protocol_type: <span class="prelude-ty">Option</span>&lt;String&gt;,
     <span class="kw">pub </span>group_id: <span class="prelude-ty">Option</span>&lt;String&gt;,

     <span class="kw">pub </span>time_format: <span class="prelude-ty">Option</span>&lt;TimeFormat&gt;,

     <span class="attr">#[serde(skip)]
     </span>ty: EventType,
 }

 <span class="kw">impl </span>Event {
     <span class="doccomment">/// Returns a new `Event` object with the provided time and data.
     </span><span class="kw">pub fn </span>with_time(time: f32, data: EventData) -&gt; <span class="self">Self </span>{
         <span class="self">Self</span>::with_time_ex(time, data, Default::default())
     }

     <span class="doccomment">/// Returns a new `Event` object with the provided time, data and ex_data.
     </span><span class="kw">pub fn </span>with_time_ex(time: f32, data: EventData, ex_data: ExData) -&gt; <span class="self">Self </span>{
         <span class="kw">let </span>ty = EventType::from(<span class="kw-2">&amp;</span>data);
         Event {
             time,
             data,
             ex_data,
             protocol_type: Default::default(),
             group_id: Default::default(),
             time_format: Default::default(),
             ty,
         }
     }
 }

 <span class="kw">impl </span>Eventable <span class="kw">for </span>Event {
     <span class="kw">fn </span>importance(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; EventImportance {
         <span class="self">self</span>.ty.into()
     }

     <span class="kw">fn </span>set_time(<span class="kw-2">&amp;mut </span><span class="self">self</span>, time: f32) {
         <span class="self">self</span>.time = time;
     }
 }

 <span class="kw">impl </span>PartialEq <span class="kw">for </span>Event {
     <span class="comment">// custom comparison to skip over the `ty` field
     </span><span class="kw">fn </span>eq(<span class="kw-2">&amp;</span><span class="self">self</span>, other: <span class="kw-2">&amp;</span>Event) -&gt; bool {
         <span class="self">self</span>.time == other.time &amp;&amp;
             <span class="self">self</span>.data == other.data &amp;&amp;
             <span class="self">self</span>.ex_data == other.ex_data &amp;&amp;
             <span class="self">self</span>.protocol_type == other.protocol_type &amp;&amp;
             <span class="self">self</span>.group_id == other.group_id &amp;&amp;
             <span class="self">self</span>.time_format == other.time_format
     }
 }

 <span class="attr">#[derive(Serialize, Deserialize, Clone, Debug)]
 </span><span class="kw">pub struct </span>JsonEvent {
     <span class="kw">pub </span>time: f32,

     <span class="attr">#[serde(skip)]
     </span><span class="kw">pub </span>importance: EventImportance,

     <span class="kw">pub </span>name: String,
     <span class="kw">pub </span>data: serde_json::Value,
 }

 <span class="kw">impl </span>Eventable <span class="kw">for </span>JsonEvent {
     <span class="kw">fn </span>importance(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; EventImportance {
         <span class="self">self</span>.importance
     }

     <span class="kw">fn </span>set_time(<span class="kw-2">&amp;mut </span><span class="self">self</span>, time: f32) {
         <span class="self">self</span>.time = time;
     }
 }

 <span class="attr">#[derive(Clone, Copy, Debug, Default)]
 </span><span class="kw">pub enum </span>EventImportance {
     <span class="attr">#[default]
     </span>Core,
     Base,
     Extra,
 }

 <span class="kw">impl </span>EventImportance {
     <span class="doccomment">/// Returns true if this importance level is included by `other`.
     </span><span class="kw">pub fn </span>is_contained_in(<span class="kw-2">&amp;</span><span class="self">self</span>, other: <span class="kw-2">&amp;</span>EventImportance) -&gt; bool {
         <span class="kw">match </span>(other, <span class="self">self</span>) {
             (EventImportance::Core, EventImportance::Core) =&gt; <span class="bool-val">true</span>,

             (EventImportance::Base, EventImportance::Core) |
             (EventImportance::Base, EventImportance::Base) =&gt; <span class="bool-val">true</span>,

             (EventImportance::Extra, EventImportance::Core) |
             (EventImportance::Extra, EventImportance::Base) |
             (EventImportance::Extra, EventImportance::Extra) =&gt; <span class="bool-val">true</span>,

             (..) =&gt; <span class="bool-val">false</span>,
         }
     }
 }

 <span class="kw">impl </span>From&lt;EventType&gt; <span class="kw">for </span>EventImportance {
     <span class="kw">fn </span>from(ty: EventType) -&gt; <span class="self">Self </span>{
         <span class="kw">match </span>ty {
             EventType::ConnectivityEventType(
                 ConnectivityEventType::ServerListening,
             ) =&gt; EventImportance::Extra,
             EventType::ConnectivityEventType(
                 ConnectivityEventType::ConnectionStarted,
             ) =&gt; EventImportance::Base,
             EventType::ConnectivityEventType(
                 ConnectivityEventType::ConnectionClosed,
             ) =&gt; EventImportance::Base,
             EventType::ConnectivityEventType(
                 ConnectivityEventType::ConnectionIdUpdated,
             ) =&gt; EventImportance::Base,
             EventType::ConnectivityEventType(
                 ConnectivityEventType::SpinBitUpdated,
             ) =&gt; EventImportance::Base,
             EventType::ConnectivityEventType(
                 ConnectivityEventType::ConnectionStateUpdated,
             ) =&gt; EventImportance::Base,
             EventType::ConnectivityEventType(
                 ConnectivityEventType::MtuUpdated,
             ) =&gt; EventImportance::Extra,

             EventType::SecurityEventType(SecurityEventType::KeyUpdated) =&gt;
                 EventImportance::Base,
             EventType::SecurityEventType(SecurityEventType::KeyDiscarded) =&gt;
                 EventImportance::Base,

             EventType::TransportEventType(
                 TransportEventType::VersionInformation,
             ) =&gt; EventImportance::Core,
             EventType::TransportEventType(
                 TransportEventType::AlpnInformation,
             ) =&gt; EventImportance::Core,
             EventType::TransportEventType(TransportEventType::ParametersSet) =&gt;
                 EventImportance::Core,
             EventType::TransportEventType(
                 TransportEventType::ParametersRestored,
             ) =&gt; EventImportance::Base,
             EventType::TransportEventType(
                 TransportEventType::DatagramsReceived,
             ) =&gt; EventImportance::Extra,
             EventType::TransportEventType(TransportEventType::DatagramsSent) =&gt;
                 EventImportance::Extra,
             EventType::TransportEventType(
                 TransportEventType::DatagramDropped,
             ) =&gt; EventImportance::Extra,
             EventType::TransportEventType(TransportEventType::PacketReceived) =&gt;
                 EventImportance::Core,
             EventType::TransportEventType(TransportEventType::PacketSent) =&gt;
                 EventImportance::Core,
             EventType::TransportEventType(TransportEventType::PacketDropped) =&gt;
                 EventImportance::Base,
             EventType::TransportEventType(TransportEventType::PacketBuffered) =&gt;
                 EventImportance::Base,
             EventType::TransportEventType(TransportEventType::PacketsAcked) =&gt;
                 EventImportance::Extra,
             EventType::TransportEventType(
                 TransportEventType::StreamStateUpdated,
             ) =&gt; EventImportance::Base,
             EventType::TransportEventType(
                 TransportEventType::FramesProcessed,
             ) =&gt; EventImportance::Extra,
             EventType::TransportEventType(TransportEventType::DataMoved) =&gt;
                 EventImportance::Base,

             EventType::RecoveryEventType(RecoveryEventType::ParametersSet) =&gt;
                 EventImportance::Base,
             EventType::RecoveryEventType(RecoveryEventType::MetricsUpdated) =&gt;
                 EventImportance::Core,
             EventType::RecoveryEventType(
                 RecoveryEventType::CongestionStateUpdated,
             ) =&gt; EventImportance::Base,
             EventType::RecoveryEventType(RecoveryEventType::LossTimerUpdated) =&gt;
                 EventImportance::Extra,
             EventType::RecoveryEventType(RecoveryEventType::PacketLost) =&gt;
                 EventImportance::Core,
             EventType::RecoveryEventType(
                 RecoveryEventType::MarkedForRetransmit,
             ) =&gt; EventImportance::Extra,

             EventType::Http3EventType(Http3EventType::ParametersSet) =&gt;
                 EventImportance::Base,
             EventType::Http3EventType(Http3EventType::StreamTypeSet) =&gt;
                 EventImportance::Base,
             EventType::Http3EventType(Http3EventType::FrameCreated) =&gt;
                 EventImportance::Core,
             EventType::Http3EventType(Http3EventType::FrameParsed) =&gt;
                 EventImportance::Core,
             EventType::Http3EventType(Http3EventType::PushResolved) =&gt;
                 EventImportance::Extra,

             EventType::QpackEventType(QpackEventType::StateUpdated) =&gt;
                 EventImportance::Base,
             EventType::QpackEventType(QpackEventType::StreamStateUpdated) =&gt;
                 EventImportance::Base,
             EventType::QpackEventType(QpackEventType::DynamicTableUpdated) =&gt;
                 EventImportance::Extra,
             EventType::QpackEventType(QpackEventType::HeadersEncoded) =&gt;
                 EventImportance::Base,
             EventType::QpackEventType(QpackEventType::HeadersDecoded) =&gt;
                 EventImportance::Base,
             EventType::QpackEventType(QpackEventType::InstructionCreated) =&gt;
                 EventImportance::Base,
             EventType::QpackEventType(QpackEventType::InstructionParsed) =&gt;
                 EventImportance::Base,

             <span class="kw">_ </span>=&gt; <span class="macro">unimplemented!</span>(),
         }
     }
 }

 <span class="kw">pub trait </span>Eventable {
     <span class="kw">fn </span>importance(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; EventImportance;

     <span class="kw">fn </span>set_time(<span class="kw-2">&amp;mut </span><span class="self">self</span>, time: f32);
 }

 <span class="attr">#[derive(Serialize, Deserialize, Clone, Debug)]
 #[serde(rename_all = <span class="string">"snake_case"</span>)]
 </span><span class="kw">pub enum </span>EventCategory {
     Connectivity,
     Security,
     Transport,
     Recovery,
     Http,
     Qpack,

     Error,
     Warning,
     Info,
     Debug,
     Verbose,
     Simulation,
 }

 <span class="kw">impl </span>std::fmt::Display <span class="kw">for </span>EventCategory {
     <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>std::fmt::Formatter) -&gt; std::fmt::Result {
         <span class="kw">let </span>v = <span class="kw">match </span><span class="self">self </span>{
             EventCategory::Connectivity =&gt; <span class="string">"connectivity"</span>,
             EventCategory::Security =&gt; <span class="string">"security"</span>,
             EventCategory::Transport =&gt; <span class="string">"transport"</span>,
             EventCategory::Recovery =&gt; <span class="string">"recovery"</span>,
             EventCategory::Http =&gt; <span class="string">"http"</span>,
             EventCategory::Qpack =&gt; <span class="string">"qpack"</span>,
             EventCategory::Error =&gt; <span class="string">"error"</span>,
             EventCategory::Warning =&gt; <span class="string">"warning"</span>,
             EventCategory::Info =&gt; <span class="string">"info"</span>,
             EventCategory::Debug =&gt; <span class="string">"debug"</span>,
             EventCategory::Verbose =&gt; <span class="string">"verbose"</span>,
             EventCategory::Simulation =&gt; <span class="string">"simulation"</span>,
         };

         <span class="macro">write!</span>(f, <span class="string">"{v}"</span>,)
     }
 }

 <span class="kw">impl </span>From&lt;EventType&gt; <span class="kw">for </span>EventCategory {
     <span class="kw">fn </span>from(ty: EventType) -&gt; <span class="self">Self </span>{
         <span class="kw">match </span>ty {
             EventType::ConnectivityEventType(<span class="kw">_</span>) =&gt; EventCategory::Connectivity,
             EventType::SecurityEventType(<span class="kw">_</span>) =&gt; EventCategory::Security,
             EventType::TransportEventType(<span class="kw">_</span>) =&gt; EventCategory::Transport,
             EventType::RecoveryEventType(<span class="kw">_</span>) =&gt; EventCategory::Recovery,
             EventType::Http3EventType(<span class="kw">_</span>) =&gt; EventCategory::Http,
             EventType::QpackEventType(<span class="kw">_</span>) =&gt; EventCategory::Qpack,

             <span class="kw">_ </span>=&gt; <span class="macro">unimplemented!</span>(),
         }
     }
 }

 <span class="kw">impl </span>From&lt;<span class="kw-2">&amp;</span>EventData&gt; <span class="kw">for </span>EventType {
     <span class="kw">fn </span>from(event_data: <span class="kw-2">&amp;</span>EventData) -&gt; <span class="self">Self </span>{
         <span class="kw">match </span>event_data {
             EventData::ServerListening { .. } =&gt;
                 EventType::ConnectivityEventType(
                     ConnectivityEventType::ServerListening,
                 ),
             EventData::ConnectionStarted { .. } =&gt;
                 EventType::ConnectivityEventType(
                     ConnectivityEventType::ConnectionStarted,
                 ),
             EventData::ConnectionClosed { .. } =&gt;
                 EventType::ConnectivityEventType(
                     ConnectivityEventType::ConnectionClosed,
                 ),
             EventData::ConnectionIdUpdated { .. } =&gt;
                 EventType::ConnectivityEventType(
                     ConnectivityEventType::ConnectionIdUpdated,
                 ),
             EventData::SpinBitUpdated { .. } =&gt; EventType::ConnectivityEventType(
                 ConnectivityEventType::SpinBitUpdated,
             ),
             EventData::ConnectionStateUpdated { .. } =&gt;
                 EventType::ConnectivityEventType(
                     ConnectivityEventType::ConnectionStateUpdated,
                 ),
             EventData::MtuUpdated { .. } =&gt; EventType::ConnectivityEventType(
                 ConnectivityEventType::MtuUpdated,
             ),

             EventData::KeyUpdated { .. } =&gt;
                 EventType::SecurityEventType(SecurityEventType::KeyUpdated),
             EventData::KeyDiscarded { .. } =&gt;
                 EventType::SecurityEventType(SecurityEventType::KeyDiscarded),

             EventData::VersionInformation { .. } =&gt;
                 EventType::TransportEventType(
                     TransportEventType::VersionInformation,
                 ),
             EventData::AlpnInformation { .. } =&gt;
                 EventType::TransportEventType(TransportEventType::AlpnInformation),
             EventData::TransportParametersSet { .. } =&gt;
                 EventType::TransportEventType(TransportEventType::ParametersSet),
             EventData::TransportParametersRestored { .. } =&gt;
                 EventType::TransportEventType(
                     TransportEventType::ParametersRestored,
                 ),
             EventData::DatagramsReceived { .. } =&gt; EventType::TransportEventType(
                 TransportEventType::DatagramsReceived,
             ),
             EventData::DatagramsSent { .. } =&gt;
                 EventType::TransportEventType(TransportEventType::DatagramsSent),
             EventData::DatagramDropped { .. } =&gt;
                 EventType::TransportEventType(TransportEventType::DatagramDropped),
             EventData::PacketReceived { .. } =&gt;
                 EventType::TransportEventType(TransportEventType::PacketReceived),
             EventData::PacketSent { .. } =&gt;
                 EventType::TransportEventType(TransportEventType::PacketSent),
             EventData::PacketDropped { .. } =&gt;
                 EventType::TransportEventType(TransportEventType::PacketDropped),
             EventData::PacketBuffered { .. } =&gt;
                 EventType::TransportEventType(TransportEventType::PacketBuffered),
             EventData::PacketsAcked { .. } =&gt;
                 EventType::TransportEventType(TransportEventType::PacketsAcked),
             EventData::StreamStateUpdated { .. } =&gt;
                 EventType::TransportEventType(
                     TransportEventType::StreamStateUpdated,
                 ),
             EventData::FramesProcessed { .. } =&gt;
                 EventType::TransportEventType(TransportEventType::FramesProcessed),
             EventData::DataMoved { .. } =&gt;
                 EventType::TransportEventType(TransportEventType::DataMoved),

             EventData::RecoveryParametersSet { .. } =&gt;
                 EventType::RecoveryEventType(RecoveryEventType::ParametersSet),
             EventData::MetricsUpdated { .. } =&gt;
                 EventType::RecoveryEventType(RecoveryEventType::MetricsUpdated),
             EventData::CongestionStateUpdated { .. } =&gt;
                 EventType::RecoveryEventType(
                     RecoveryEventType::CongestionStateUpdated,
                 ),
             EventData::LossTimerUpdated { .. } =&gt;
                 EventType::RecoveryEventType(RecoveryEventType::LossTimerUpdated),
             EventData::PacketLost { .. } =&gt;
                 EventType::RecoveryEventType(RecoveryEventType::PacketLost),
             EventData::MarkedForRetransmit { .. } =&gt;
                 EventType::RecoveryEventType(
                     RecoveryEventType::MarkedForRetransmit,
                 ),

             EventData::H3ParametersSet { .. } =&gt;
                 EventType::Http3EventType(Http3EventType::ParametersSet),
             EventData::H3ParametersRestored { .. } =&gt;
                 EventType::Http3EventType(Http3EventType::ParametersRestored),
             EventData::H3StreamTypeSet { .. } =&gt;
                 EventType::Http3EventType(Http3EventType::StreamTypeSet),
             EventData::H3FrameCreated { .. } =&gt;
                 EventType::Http3EventType(Http3EventType::FrameCreated),
             EventData::H3FrameParsed { .. } =&gt;
                 EventType::Http3EventType(Http3EventType::FrameParsed),
             EventData::H3PushResolved { .. } =&gt;
                 EventType::Http3EventType(Http3EventType::PushResolved),

             EventData::QpackStateUpdated { .. } =&gt;
                 EventType::QpackEventType(QpackEventType::StateUpdated),
             EventData::QpackStreamStateUpdated { .. } =&gt;
                 EventType::QpackEventType(QpackEventType::StreamStateUpdated),
             EventData::QpackDynamicTableUpdated { .. } =&gt;
                 EventType::QpackEventType(QpackEventType::DynamicTableUpdated),
             EventData::QpackHeadersEncoded { .. } =&gt;
                 EventType::QpackEventType(QpackEventType::HeadersEncoded),
             EventData::QpackHeadersDecoded { .. } =&gt;
                 EventType::QpackEventType(QpackEventType::HeadersDecoded),
             EventData::QpackInstructionCreated { .. } =&gt;
                 EventType::QpackEventType(QpackEventType::InstructionCreated),
             EventData::QpackInstructionParsed { .. } =&gt;
                 EventType::QpackEventType(QpackEventType::InstructionParsed),

             EventData::ConnectionError { .. } =&gt;
                 EventType::GenericEventType(GenericEventType::ConnectionError),
             EventData::ApplicationError { .. } =&gt;
                 EventType::GenericEventType(GenericEventType::ApplicationError),
             EventData::InternalError { .. } =&gt;
                 EventType::GenericEventType(GenericEventType::InternalError),
             EventData::InternalWarning { .. } =&gt;
                 EventType::GenericEventType(GenericEventType::InternalError),
             EventData::Message { .. } =&gt;
                 EventType::GenericEventType(GenericEventType::Message),
             EventData::Marker { .. } =&gt;
                 EventType::GenericEventType(GenericEventType::Marker),
         }
     }
 }

 <span class="attr">#[derive(Serialize, Deserialize, Clone, PartialEq, Eq, Debug)]
 #[serde(rename_all = <span class="string">"snake_case"</span>)]
 </span><span class="kw">pub enum </span>DataRecipient {
     User,
     Application,
     Transport,
     Network,
     Dropped,
 }

 <span class="attr">#[serde_with::skip_serializing_none]
 #[derive(Serialize, Deserialize, Clone, PartialEq, Eq, Debug)]
 </span><span class="kw">pub struct </span>RawInfo {
     <span class="kw">pub </span>length: <span class="prelude-ty">Option</span>&lt;u64&gt;,
     <span class="kw">pub </span>payload_length: <span class="prelude-ty">Option</span>&lt;u64&gt;,

     <span class="kw">pub </span>data: <span class="prelude-ty">Option</span>&lt;Bytes&gt;,
 }

 <span class="attr">#[serde_with::skip_serializing_none]
 #[derive(Serialize, Deserialize, Clone, PartialEq, Debug)]
 #[serde(tag = <span class="string">"name"</span>, content = <span class="string">"data"</span>)]
 #[allow(clippy::large_enum_variant)]
 </span><span class="kw">pub enum </span>EventData {
     <span class="comment">// Connectivity
     </span><span class="attr">#[serde(rename = <span class="string">"connectivity:server_listening"</span>)]
     </span>ServerListening(connectivity::ServerListening),

     <span class="attr">#[serde(rename = <span class="string">"connectivity:connection_started"</span>)]
     </span>ConnectionStarted(connectivity::ConnectionStarted),

     <span class="attr">#[serde(rename = <span class="string">"connectivity:connection_closed"</span>)]
     </span>ConnectionClosed(connectivity::ConnectionClosed),

     <span class="attr">#[serde(rename = <span class="string">"connectivity:connection_id_updated"</span>)]
     </span>ConnectionIdUpdated(connectivity::ConnectionIdUpdated),

     <span class="attr">#[serde(rename = <span class="string">"connectivity:spin_bit_updated"</span>)]
     </span>SpinBitUpdated(connectivity::SpinBitUpdated),

     <span class="attr">#[serde(rename = <span class="string">"connectivity:connection_state_updated"</span>)]
     </span>ConnectionStateUpdated(connectivity::ConnectionStateUpdated),

     <span class="attr">#[serde(rename = <span class="string">"connectivity:mtu_updated"</span>)]
     </span>MtuUpdated(connectivity::MtuUpdated),

     <span class="comment">// Security
     </span><span class="attr">#[serde(rename = <span class="string">"security:key_updated"</span>)]
     </span>KeyUpdated(security::KeyUpdated),

     <span class="attr">#[serde(rename = <span class="string">"security:key_retired"</span>)]
     </span>KeyDiscarded(security::KeyDiscarded),

     <span class="comment">// Transport
     </span><span class="attr">#[serde(rename = <span class="string">"transport:version_information"</span>)]
     </span>VersionInformation(quic::VersionInformation),

     <span class="attr">#[serde(rename = <span class="string">"transport:alpn_information"</span>)]
     </span>AlpnInformation(quic::AlpnInformation),

     <span class="attr">#[serde(rename = <span class="string">"transport:parameters_set"</span>)]
     </span>TransportParametersSet(quic::TransportParametersSet),

     <span class="attr">#[serde(rename = <span class="string">"transport:parameters_restored"</span>)]
     </span>TransportParametersRestored(quic::TransportParametersRestored),

     <span class="attr">#[serde(rename = <span class="string">"transport:datagrams_received"</span>)]
     </span>DatagramsReceived(quic::DatagramsReceived),

     <span class="attr">#[serde(rename = <span class="string">"transport:datagrams_sent"</span>)]
     </span>DatagramsSent(quic::DatagramsSent),

     <span class="attr">#[serde(rename = <span class="string">"transport:datagram_dropped"</span>)]
     </span>DatagramDropped(quic::DatagramDropped),

     <span class="attr">#[serde(rename = <span class="string">"transport:packet_received"</span>)]
     </span>PacketReceived(quic::PacketReceived),

     <span class="attr">#[serde(rename = <span class="string">"transport:packet_sent"</span>)]
     </span>PacketSent(quic::PacketSent),

     <span class="attr">#[serde(rename = <span class="string">"transport:packet_dropped"</span>)]
     </span>PacketDropped(quic::PacketDropped),

     <span class="attr">#[serde(rename = <span class="string">"transport:packet_buffered"</span>)]
     </span>PacketBuffered(quic::PacketBuffered),

     <span class="attr">#[serde(rename = <span class="string">"transport:packets_acked"</span>)]
     </span>PacketsAcked(quic::PacketsAcked),

     <span class="attr">#[serde(rename = <span class="string">"transport:stream_state_updated"</span>)]
     </span>StreamStateUpdated(quic::StreamStateUpdated),

     <span class="attr">#[serde(rename = <span class="string">"transport:frames_processed"</span>)]
     </span>FramesProcessed(quic::FramesProcessed),

     <span class="attr">#[serde(rename = <span class="string">"transport:data_moved"</span>)]
     </span>DataMoved(quic::DataMoved),

     <span class="comment">// Recovery
     </span><span class="attr">#[serde(rename = <span class="string">"recovery:parameters_set"</span>)]
     </span>RecoveryParametersSet(quic::RecoveryParametersSet),

     <span class="attr">#[serde(rename = <span class="string">"recovery:metrics_updated"</span>)]
     </span>MetricsUpdated(quic::MetricsUpdated),

     <span class="attr">#[serde(rename = <span class="string">"recovery:congestion_state_updated"</span>)]
     </span>CongestionStateUpdated(quic::CongestionStateUpdated),

     <span class="attr">#[serde(rename = <span class="string">"recovery:loss_timer_updated"</span>)]
     </span>LossTimerUpdated(quic::LossTimerUpdated),

     <span class="attr">#[serde(rename = <span class="string">"recovery:packet_lost"</span>)]
     </span>PacketLost(quic::PacketLost),

     <span class="attr">#[serde(rename = <span class="string">"recovery:marked_for_retransmit"</span>)]
     </span>MarkedForRetransmit(quic::MarkedForRetransmit),

     <span class="comment">// HTTP/3
     </span><span class="attr">#[serde(rename = <span class="string">"http:parameters_set"</span>)]
     </span>H3ParametersSet(h3::H3ParametersSet),

     <span class="attr">#[serde(rename = <span class="string">"http:parameters_restored"</span>)]
     </span>H3ParametersRestored(h3::H3ParametersRestored),

     <span class="attr">#[serde(rename = <span class="string">"http:stream_type_set"</span>)]
     </span>H3StreamTypeSet(h3::H3StreamTypeSet),

     <span class="attr">#[serde(rename = <span class="string">"http:frame_created"</span>)]
     </span>H3FrameCreated(h3::H3FrameCreated),

     <span class="attr">#[serde(rename = <span class="string">"http:frame_parsed"</span>)]
     </span>H3FrameParsed(h3::H3FrameParsed),

     <span class="attr">#[serde(rename = <span class="string">"http:push_resolved"</span>)]
     </span>H3PushResolved(h3::H3PushResolved),

     <span class="comment">// QPACK
     </span><span class="attr">#[serde(rename = <span class="string">"qpack:state_updated"</span>)]
     </span>QpackStateUpdated(qpack::QpackStateUpdated),

     <span class="attr">#[serde(rename = <span class="string">"qpack:stream_state_updated"</span>)]
     </span>QpackStreamStateUpdated(qpack::QpackStreamStateUpdated),

     <span class="attr">#[serde(rename = <span class="string">"qpack:dynamic_table_updated"</span>)]
     </span>QpackDynamicTableUpdated(qpack::QpackDynamicTableUpdated),

     <span class="attr">#[serde(rename = <span class="string">"qpack:headers_encoded"</span>)]
     </span>QpackHeadersEncoded(qpack::QpackHeadersEncoded),

     <span class="attr">#[serde(rename = <span class="string">"qpack:headers_decoded"</span>)]
     </span>QpackHeadersDecoded(qpack::QpackHeadersDecoded),

     <span class="attr">#[serde(rename = <span class="string">"qpack:instruction_created"</span>)]
     </span>QpackInstructionCreated(qpack::QpackInstructionCreated),

     <span class="attr">#[serde(rename = <span class="string">"qpack:instruction_parsed"</span>)]
     </span>QpackInstructionParsed(qpack::QpackInstructionParsed),

     <span class="comment">// Generic
     </span><span class="attr">#[serde(rename = <span class="string">"generic:connection_error"</span>)]
     </span>ConnectionError {
         code: <span class="prelude-ty">Option</span>&lt;ConnectionErrorCode&gt;,
         description: <span class="prelude-ty">Option</span>&lt;String&gt;,
     },

     <span class="attr">#[serde(rename = <span class="string">"generic:application_error"</span>)]
     </span>ApplicationError {
         code: <span class="prelude-ty">Option</span>&lt;ApplicationErrorCode&gt;,
         description: <span class="prelude-ty">Option</span>&lt;String&gt;,
     },

     <span class="attr">#[serde(rename = <span class="string">"generic:internal_error"</span>)]
     </span>InternalError {
         code: <span class="prelude-ty">Option</span>&lt;u64&gt;,
         description: <span class="prelude-ty">Option</span>&lt;String&gt;,
     },

     <span class="attr">#[serde(rename = <span class="string">"generic:internal_warning"</span>)]
     </span>InternalWarning {
         code: <span class="prelude-ty">Option</span>&lt;u64&gt;,
         description: <span class="prelude-ty">Option</span>&lt;String&gt;,
     },

     <span class="attr">#[serde(rename = <span class="string">"generic:message"</span>)]
     </span>Message { message: String },

     <span class="attr">#[serde(rename = <span class="string">"generic:marker"</span>)]
     </span>Marker {
         marker_type: String,
         message: <span class="prelude-ty">Option</span>&lt;String&gt;,
     },
 }

 <span class="kw">impl </span>EventData {
     <span class="doccomment">/// Returns size of `EventData` array of `QuicFrame`s if it exists.
     </span><span class="kw">pub fn </span>contains_quic_frames(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="prelude-ty">Option</span>&lt;usize&gt; {
         <span class="comment">// For some EventData variants, the frame array is optional
         // but for others it is mandatory.
         </span><span class="kw">match </span><span class="self">self </span>{
             EventData::PacketSent(pkt) =&gt; pkt.frames.as_ref().map(|f| f.len()),

             EventData::PacketReceived(pkt) =&gt;
                 pkt.frames.as_ref().map(|f| f.len()),

             EventData::PacketLost(pkt) =&gt; pkt.frames.as_ref().map(|f| f.len()),

             EventData::MarkedForRetransmit(ev) =&gt; <span class="prelude-val">Some</span>(ev.frames.len()),
             EventData::FramesProcessed(ev) =&gt; <span class="prelude-val">Some</span>(ev.frames.len()),

             <span class="kw">_ </span>=&gt; <span class="prelude-val">None</span>,
         }
     }
 }

 <span class="attr">#[derive(Serialize, Deserialize, Clone, Copy, PartialEq, Eq, Debug)]
 #[serde(rename_all = <span class="string">"snake_case"</span>)]
 </span><span class="kw">pub enum </span>GenericEventType {
     ConnectionError,
     ApplicationError,
     InternalError,
     InternalWarning,

     Message,
     Marker,
 }

 <span class="attr">#[derive(Serialize, Deserialize, Clone, PartialEq, Eq, Debug)]
 #[serde(untagged)]
 </span><span class="kw">pub enum </span>ConnectionErrorCode {
     TransportError(TransportError),
     CryptoError(CryptoError),
     Value(u64),
 }

 <span class="attr">#[derive(Serialize, Deserialize, Clone, PartialEq, Eq, Debug)]
 #[serde(untagged)]
 </span><span class="kw">pub enum </span>ApplicationErrorCode {
     ApplicationError(ApplicationError),
     Value(u64),
 }

 <span class="comment">// TODO
 </span><span class="attr">#[derive(Serialize, Deserialize, Clone, PartialEq, Eq, Debug)]
 #[serde(rename_all = <span class="string">"snake_case"</span>)]
 </span><span class="kw">pub enum </span>CryptoError {
     Prefix,
 }

 <span class="kw">pub mod </span>quic;

 <span class="kw">pub mod </span>connectivity;
 <span class="kw">pub mod </span>h3;
 <span class="kw">pub mod </span>qpack;
 <span class="kw">pub mod </span>security;
 </code></pre></div></section></main></body></html>