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

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

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

  client -&gt; server [
      noactivate,
      label = "cancel",
      rightnote = "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="210.5" 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="402.5" 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="123.5" 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="99.5" 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="99.5" 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="96.5" y="172">method ID</text>
  <path d="M 218 247 L 394 247" fill="none" stroke="rgb(0,0,0)" stroke-dasharray="4"/>
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  <polygon fill="rgb(240,248,255)" points="24,214 186,214 194,222 194,281 24,281 24,214" 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="105.0" y="227">PacketType.CLIENT_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="62.5" y="240">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="253">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="266">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="53.5" y="279">payload</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="140" x="496.0" y="334">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="456.5" y="347">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="456.5" y="360">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="453.5" y="373">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="474.5" y="386">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="31" x="237.5" y="145">start</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="292.0" y="245">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="240.5" y="352">cancel</text>
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