<!-- Originally created with blockdiag. -->
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  <title>Cancelled Server Streaming RPC</title>
  <desc>seqdiag {
  default_note_color = aliceblue;

  client -&gt; server [
      label = "request",
      leftnote = "PacketType.REQUEST\nchannel ID\nservice ID\nmethod ID\npayload"
  ];

  client &lt;-- server [
      noactivate,
      label = "messages (zero or more)",
      rightnote = "PacketType.SERVER_STREAM\nchannel ID\nservice ID\nmethod ID\npayload"
  ];

  client -&gt; server [
      noactivate,
      label = "cancel",
      leftnote  = "PacketType.CLIENT_ERROR\nchannel ID\nservice ID\nmethod ID\nstatus=CANCELLED"
  ];
}</desc>
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  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="37" x="204.5" y="66">client</text>
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  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="37" x="396.5" y="66">server</text>
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  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="109" x="117.5" y="133">PacketType.REQUEST</text>
  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="61" x="93.5" y="146">channel ID</text>
  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="61" x="93.5" y="159">service ID</text>
  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="55" x="90.5" y="172">method ID</text>
  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="43" x="84.5" y="185">payload</text>
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  <polygon fill="rgb(240,248,255)" points="412,227 574,227 582,235 582,294 412,294 412,227" stroke="rgb(0,0,0)" />
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  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="146" x="493.0" y="240">PacketType.SERVER_STREAM</text>
  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="61" x="450.5" y="253">channel ID</text>
  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="61" x="450.5" y="266">service ID</text>
  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="55" x="447.5" y="279">method ID</text>
  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="43" x="441.5" y="292">payload</text>
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  <path d="M 180 342 L 188 342" fill="none" stroke="rgb(0,0,0)" />
  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="140" x="102.0" y="347">PacketType.CLIENT_ERROR</text>
  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="61" x="62.5" y="360">channel ID</text>
  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="61" x="62.5" y="373">service ID</text>
  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="55" x="59.5" y="386">method ID</text>
  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="97" x="80.5" y="399">status=CANCELLED</text>
  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="43" x="237.5" y="151">request</text>
  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="140" x="318.0" y="258">messages (zero or more)</text>
  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="11" font-style="normal" font-weight="normal" text-anchor="middle" textLength="37" x="234.5" y="365">cancel</text>
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