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All -communication is in pkt-line format (see <a href="../gitprotocol-common.html">gitprotocol-common(5)</a>) -over standard input and standard output.</p></div> -</div> -</div> -<div class="sect1"> -<h2 id="_handshake">Handshake</h2> -<div class="sectionbody"> -<div class="paragraph"><p>Git starts by sending a welcome message (for example, -"git-filter-client"), a list of supported protocol version numbers, and -a flush packet. Git expects to read the welcome message with "server" -instead of "client" (for example, "git-filter-server"), exactly one -protocol version number from the previously sent list, and a flush -packet. All further communication will be based on the selected version. -The remaining protocol description below documents "version=2". Please -note that "version=42" in the example below does not exist and is only -there to illustrate how the protocol would look like with more than one -version.</p></div> -<div class="paragraph"><p>After the version negotiation Git sends a list of all capabilities that -it supports and a flush packet. Git expects to read a list of desired -capabilities, which must be a subset of the supported capabilities list, -and a flush packet as response:</p></div> -<div class="listingblock"> -<div class="content"> -<pre><code>packet: git> git-filter-client -packet: git> version=2 -packet: git> version=42 -packet: git> 0000 -packet: git< git-filter-server -packet: git< version=2 -packet: git< 0000 -packet: git> capability=clean -packet: git> capability=smudge -packet: git> capability=not-yet-invented -packet: git> 0000 -packet: git< capability=clean -packet: git< capability=smudge -packet: git< 0000</code></pre> -</div></div> -</div> -</div> -<div class="sect1"> -<h2 id="_shutdown">Shutdown</h2> -<div class="sectionbody"> -<div class="paragraph"><p>Git will close -the command pipe on exit. The filter is expected to detect EOF -and exit gracefully on its own. Git will wait until the filter -process has stopped.</p></div> -</div> -</div> -</div> -<div id="footnotes"><hr /></div> -<div id="footer"> -<div id="footer-text"> -Last updated - 2022-08-18 14:11:07 PDT -</div> -</div> -</body> -</html> +<!DOCTYPE html> +<html xmlns="http://www.w3.org/1999/xhtml" lang="en"> +<head> +<meta charset="UTF-8"/> +<meta http-equiv="X-UA-Compatible" content="IE=edge"/> +<meta name="viewport" content="width=device-width, initial-scale=1.0"/> +<meta name="generator" content="Asciidoctor 2.0.20"/> +<title>Long-running process protocol</title> +<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Open+Sans:300,300italic,400,400italic,600,600italic%7CNoto+Serif:400,400italic,700,700italic%7CDroid+Sans+Mono:400,700"/> +<style> +/*! 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#toc{border:0!important;text-align:left!important;padding:0!important;margin:0!important} +body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-break-before:always} +.listingblock code[data-lang]::before{display:block} +#footer{padding:0 .9375em} +.hide-on-print{display:none!important} +.print-only{display:block!important} +.hide-for-print{display:none!important} +.show-for-print{display:inherit!important}} +@media amzn-kf8,print{#header>h1:first-child{margin-top:1.25rem} +.sect1{padding:0!important} +.sect1+.sect1{border:0} +#footer{background:none} +#footer-text{color:rgba(0,0,0,.6);font-size:.9em}} +@media amzn-kf8{#header,#content,#footnotes,#footer{padding:0}} +</style> +</head> +<body class="article"> +<div id="header"> +<h1>Long-running process protocol</h1> +<div class="details"> +<span id="revdate">2024-07-31</span> +</div> +</div> +<div id="content"> +<div id="preamble"> +<div class="sectionbody"> +<div class="paragraph"> +<p>This protocol is used when Git needs to communicate with an external +process throughout the entire life of a single Git command. All +communication is in pkt-line format (see <a href="../gitprotocol-common.html">gitprotocol-common(5)</a>) +over standard input and standard output.</p> +</div> +</div> +</div> +<div class="sect1"> +<h2 id="_handshake">Handshake</h2> +<div class="sectionbody"> +<div class="paragraph"> +<p>Git starts by sending a welcome message (for example, +"git-filter-client"), a list of supported protocol version numbers, and +a flush packet. Git expects to read the welcome message with "server" +instead of "client" (for example, "git-filter-server"), exactly one +protocol version number from the previously sent list, and a flush +packet. All further communication will be based on the selected version. +The remaining protocol description below documents "version=2". Please +note that "version=42" in the example below does not exist and is only +there to illustrate how the protocol would look like with more than one +version.</p> +</div> +<div class="paragraph"> +<p>After the version negotiation Git sends a list of all capabilities that +it supports and a flush packet. Git expects to read a list of desired +capabilities, which must be a subset of the supported capabilities list, +and a flush packet as response:</p> +</div> +<div class="listingblock"> +<div class="content"> +<pre>packet: git> git-filter-client +packet: git> version=2 +packet: git> version=42 +packet: git> 0000 +packet: git< git-filter-server +packet: git< version=2 +packet: git< 0000 +packet: git> capability=clean +packet: git> capability=smudge +packet: git> capability=not-yet-invented +packet: git> 0000 +packet: git< capability=clean +packet: git< capability=smudge +packet: git< 0000</pre> +</div> +</div> +</div> +</div> +<div class="sect1"> +<h2 id="_shutdown">Shutdown</h2> +<div class="sectionbody"> +<div class="paragraph"> +<p>Git will close +the command pipe on exit. The filter is expected to detect EOF +and exit gracefully on its own. Git will wait until the filter +process has stopped.</p> +</div> +</div> +</div> +</div> +<div id="footer"> +<div id="footer-text"> +Last updated 2022-08-18 14:11:07 -0700 +</div> +</div> +</body> +</html> \ No newline at end of file 