m>side_band_64k</em>. Each packet is made up
of a leading 4-byte pkt-line length of how much data is in the packet,
followed by a 1-byte stream code, followed by the actual data.</p>
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<div class="paragraph">
<p>The stream code can be one of:</p>
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<div class="literalblock">
<div class="content">
<pre>1 - pack data
2 - progress messages
3 - fatal error message just before stream aborts</pre>
</div>
</div>
<div class="paragraph">
<p>The "side-band-64k" capability came about as a way for newer clien