Port undocumented WebSocket APIs

Author: liveans

xml/System.Net.WebSockets/ClientWebSocketOptions.xml

@@ -463,7 +463,10 @@
         <ReturnType>System.TimeSpan</ReturnType>
       </ReturnValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary>
+          <para>The timeout to use when waiting for the peer's PONG in response to us sending a PING; or <see cref="F:System.TimeSpan.Zero" /> or <see cref="F:System.Threading.Timeout.InfiniteTimeSpan" /> to disable waiting for peer's response, and use an unsolicited PONG as a Keep-Alive heartbeat instead.</para>
+          <para>The default is <see cref="F:System.Threading.Timeout.InfiniteTimeSpan" />.</para>
+        </summary>
         <value>To be added.</value>
         <remarks>To be added.</remarks>
       </Docs>

xml/System.Net.WebSockets/WebSocketCreationOptions.xml

@@ -141,7 +141,10 @@
         <ReturnType>System.TimeSpan</ReturnType>
       </ReturnValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary>
+          <para>The timeout to use when waiting for the peer's PONG in response to us sending a PING; or <see cref="F:System.TimeSpan.Zero" /> or <see cref="F:System.Threading.Timeout.InfiniteTimeSpan" /> to disable waiting for peer's response, and use an unsolicited PONG as a Keep-Alive heartbeat instead.</para>
+          <para>The default is <see cref="F:System.Threading.Timeout.InfiniteTimeSpan" />.</para>
+        </summary>
         <value>To be added.</value>
         <remarks>To be added.</remarks>
       </Docs>