1100 lines
52 KiB
HTML
1100 lines
52 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<!--[if IE]><meta http-equiv="X-UA-Compatible" content="IE=edge"><![endif]-->
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta name="generator" content="Asciidoctor 1.5.8">
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<title> Git Wire Protocol, Version 2</title>
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<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">
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<style>
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/* Asciidoctor default stylesheet | MIT License | http://asciidoctor.org */
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/* Uncomment @import statement below to use as custom stylesheet */
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/*@import "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";*/
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article,aside,details,figcaption,figure,footer,header,hgroup,main,nav,section,summary{display:block}
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audio,canvas,video{display:inline-block}
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audio:not([controls]){display:none;height:0}
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script{display:none!important}
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html{font-family:sans-serif;-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%}
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a{background:transparent}
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a:focus{outline:thin dotted}
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a:active,a:hover{outline:0}
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h1{font-size:2em;margin:.67em 0}
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abbr[title]{border-bottom:1px dotted}
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b,strong{font-weight:bold}
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dfn{font-style:italic}
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hr{-moz-box-sizing:content-box;box-sizing:content-box;height:0}
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mark{background:#ff0;color:#000}
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code,kbd,pre,samp{font-family:monospace;font-size:1em}
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pre{white-space:pre-wrap}
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q{quotes:"\201C" "\201D" "\2018" "\2019"}
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small{font-size:80%}
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sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}
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sup{top:-.5em}
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sub{bottom:-.25em}
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img{border:0}
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svg:not(:root){overflow:hidden}
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figure{margin:0}
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fieldset{border:1px solid silver;margin:0 2px;padding:.35em .625em .75em}
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legend{border:0;padding:0}
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button,input,select,textarea{font-family:inherit;font-size:100%;margin:0}
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button,input{line-height:normal}
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button,select{text-transform:none}
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button,html input[type="button"],input[type="reset"],input[type="submit"]{-webkit-appearance:button;cursor:pointer}
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button[disabled],html input[disabled]{cursor:default}
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input[type="checkbox"],input[type="radio"]{box-sizing:border-box;padding:0}
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button::-moz-focus-inner,input::-moz-focus-inner{border:0;padding:0}
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textarea{overflow:auto;vertical-align:top}
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table{border-collapse:collapse;border-spacing:0}
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*,*::before,*::after{-moz-box-sizing:border-box;-webkit-box-sizing:border-box;box-sizing:border-box}
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html,body{font-size:100%}
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body{background:#fff;color:rgba(0,0,0,.8);padding:0;margin:0;font-family:"Noto Serif","DejaVu Serif",serif;font-weight:400;font-style:normal;line-height:1;position:relative;cursor:auto;tab-size:4;-moz-osx-font-smoothing:grayscale;-webkit-font-smoothing:antialiased}
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a:hover{cursor:pointer}
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img,object,embed{max-width:100%;height:auto}
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object,embed{height:100%}
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img{-ms-interpolation-mode:bicubic}
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.left{float:left!important}
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.right{float:right!important}
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.text-left{text-align:left!important}
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.text-right{text-align:right!important}
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.text-center{text-align:center!important}
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.text-justify{text-align:justify!important}
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.hide{display:none}
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img,object,svg{display:inline-block;vertical-align:middle}
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textarea{height:auto;min-height:50px}
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select{width:100%}
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.center{margin-left:auto;margin-right:auto}
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.stretch{width:100%}
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.subheader,.admonitionblock td.content>.title,.audioblock>.title,.exampleblock>.title,.imageblock>.title,.listingblock>.title,.literalblock>.title,.stemblock>.title,.openblock>.title,.paragraph>.title,.quoteblock>.title,table.tableblock>.title,.verseblock>.title,.videoblock>.title,.dlist>.title,.olist>.title,.ulist>.title,.qlist>.title,.hdlist>.title{line-height:1.45;color:#7a2518;font-weight:400;margin-top:0;margin-bottom:.25em}
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div,dl,dt,dd,ul,ol,li,h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6,pre,form,p,blockquote,th,td{margin:0;padding:0;direction:ltr}
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a{color:#2156a5;text-decoration:underline;line-height:inherit}
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a:hover,a:focus{color:#1d4b8f}
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a img{border:none}
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p{font-family:inherit;font-weight:400;font-size:1em;line-height:1.6;margin-bottom:1.25em;text-rendering:optimizeLegibility}
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p aside{font-size:.875em;line-height:1.35;font-style:italic}
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h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{font-family:"Open Sans","DejaVu Sans",sans-serif;font-weight:300;font-style:normal;color:#ba3925;text-rendering:optimizeLegibility;margin-top:1em;margin-bottom:.5em;line-height:1.0125em}
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h1 small,h2 small,h3 small,#toctitle small,.sidebarblock>.content>.title small,h4 small,h5 small,h6 small{font-size:60%;color:#e99b8f;line-height:0}
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h1{font-size:2.125em}
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h2{font-size:1.6875em}
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h3,#toctitle,.sidebarblock>.content>.title{font-size:1.375em}
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h4,h5{font-size:1.125em}
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h6{font-size:1em}
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hr{border:solid #dddddf;border-width:1px 0 0;clear:both;margin:1.25em 0 1.1875em;height:0}
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em,i{font-style:italic;line-height:inherit}
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strong,b{font-weight:bold;line-height:inherit}
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small{font-size:60%;line-height:inherit}
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code{font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;font-weight:400;color:rgba(0,0,0,.9)}
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ul,ol,dl{font-size:1em;line-height:1.6;margin-bottom:1.25em;list-style-position:outside;font-family:inherit}
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ul,ol{margin-left:1.5em}
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ul li ul,ul li ol{margin-left:1.25em;margin-bottom:0;font-size:1em}
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ul.square li ul,ul.circle li ul,ul.disc li ul{list-style:inherit}
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ul.square{list-style-type:square}
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ul.circle{list-style-type:circle}
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ul.disc{list-style-type:disc}
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ol li ul,ol li ol{margin-left:1.25em;margin-bottom:0}
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dl dt{margin-bottom:.3125em;font-weight:bold}
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dl dd{margin-bottom:1.25em}
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abbr,acronym{text-transform:uppercase;font-size:90%;color:rgba(0,0,0,.8);border-bottom:1px dotted #ddd;cursor:help}
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abbr{text-transform:none}
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blockquote{margin:0 0 1.25em;padding:.5625em 1.25em 0 1.1875em;border-left:1px solid #ddd}
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blockquote cite{display:block;font-size:.9375em;color:rgba(0,0,0,.6)}
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blockquote cite::before{content:"\2014 \0020"}
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blockquote cite a,blockquote cite a:visited{color:rgba(0,0,0,.6)}
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blockquote,blockquote p{line-height:1.6;color:rgba(0,0,0,.85)}
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@media screen and (min-width:768px){h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{line-height:1.2}
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h1{font-size:2.75em}
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h2{font-size:2.3125em}
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h3,#toctitle,.sidebarblock>.content>.title{font-size:1.6875em}
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h4{font-size:1.4375em}}
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table{background:#fff;margin-bottom:1.25em;border:solid 1px #dedede}
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table thead,table tfoot{background:#f7f8f7}
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table thead tr th,table thead tr td,table tfoot tr th,table tfoot tr td{padding:.5em .625em .625em;font-size:inherit;color:rgba(0,0,0,.8);text-align:left}
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table tr th,table tr td{padding:.5625em .625em;font-size:inherit;color:rgba(0,0,0,.8)}
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table tr.even,table tr.alt,table tr:nth-of-type(even){background:#f8f8f7}
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table thead tr th,table tfoot tr th,table tbody tr td,table tr td,table tfoot tr td{display:table-cell;line-height:1.6}
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h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{line-height:1.2;word-spacing:-.05em}
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h1 strong,h2 strong,h3 strong,#toctitle strong,.sidebarblock>.content>.title strong,h4 strong,h5 strong,h6 strong{font-weight:400}
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.clearfix::before,.clearfix::after,.float-group::before,.float-group::after{content:" ";display:table}
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.clearfix::after,.float-group::after{clear:both}
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*:not(pre)>code{font-size:.9375em;font-style:normal!important;letter-spacing:0;padding:.1em .5ex;word-spacing:-.15em;background-color:#f7f7f8;-webkit-border-radius:4px;border-radius:4px;line-height:1.45;text-rendering:optimizeSpeed;word-wrap:break-word}
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*:not(pre)>code.nobreak{word-wrap:normal}
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*:not(pre)>code.nowrap{white-space:nowrap}
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pre,pre>code{line-height:1.45;color:rgba(0,0,0,.9);font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;font-weight:400;text-rendering:optimizeSpeed}
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em em{font-style:normal}
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strong strong{font-weight:400}
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.keyseq{color:rgba(51,51,51,.8)}
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kbd{font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;display:inline-block;color:rgba(0,0,0,.8);font-size:.65em;line-height:1.45;background-color:#f7f7f7;border:1px solid #ccc;-webkit-border-radius:3px;border-radius:3px;-webkit-box-shadow:0 1px 0 rgba(0,0,0,.2),0 0 0 .1em white inset;box-shadow:0 1px 0 rgba(0,0,0,.2),0 0 0 .1em #fff inset;margin:0 .15em;padding:.2em .5em;vertical-align:middle;position:relative;top:-.1em;white-space:nowrap}
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.keyseq kbd:first-child{margin-left:0}
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.keyseq kbd:last-child{margin-right:0}
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.menuseq,.menuref{color:#000}
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.menuseq b:not(.caret),.menuref{font-weight:inherit}
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.menuseq{word-spacing:-.02em}
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.menuseq b.caret{font-size:1.25em;line-height:.8}
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.menuseq i.caret{font-weight:bold;text-align:center;width:.45em}
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b.button::before,b.button::after{position:relative;top:-1px;font-weight:400}
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b.button::before{content:"[";padding:0 3px 0 2px}
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b.button::after{content:"]";padding:0 2px 0 3px}
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p a>code:hover{color:rgba(0,0,0,.9)}
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#header,#content,#footnotes,#footer{width:100%;margin-left:auto;margin-right:auto;margin-top:0;margin-bottom:0;max-width:62.5em;*zoom:1;position:relative;padding-left:.9375em;padding-right:.9375em}
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#header::before,#header::after,#content::before,#content::after,#footnotes::before,#footnotes::after,#footer::before,#footer::after{content:" ";display:table}
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#header::after,#content::after,#footnotes::after,#footer::after{clear:both}
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#content{margin-top:1.25em}
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#content::before{content:none}
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#header>h1:first-child{color:rgba(0,0,0,.85);margin-top:2.25rem;margin-bottom:0}
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#header>h1:first-child+#toc{margin-top:8px;border-top:1px solid #dddddf}
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#header>h1:only-child,body.toc2 #header>h1:nth-last-child(2){border-bottom:1px solid #dddddf;padding-bottom:8px}
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#header .details{border-bottom:1px solid #dddddf;line-height:1.45;padding-top:.25em;padding-bottom:.25em;padding-left:.25em;color:rgba(0,0,0,.6);display:-ms-flexbox;display:-webkit-flex;display:flex;-ms-flex-flow:row wrap;-webkit-flex-flow:row wrap;flex-flow:row wrap}
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#header .details span:first-child{margin-left:-.125em}
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#header .details span.email a{color:rgba(0,0,0,.85)}
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#header .details br{display:none}
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#header .details br+span::before{content:"\00a0\2013\00a0"}
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#header .details br+span.author::before{content:"\00a0\22c5\00a0";color:rgba(0,0,0,.85)}
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#header .details br+span#revremark::before{content:"\00a0|\00a0"}
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#header #revnumber{text-transform:capitalize}
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#header #revnumber::after{content:"\00a0"}
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#content>h1:first-child:not([class]){color:rgba(0,0,0,.85);border-bottom:1px solid #dddddf;padding-bottom:8px;margin-top:0;padding-top:1rem;margin-bottom:1.25rem}
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#toc{border-bottom:1px solid #e7e7e9;padding-bottom:.5em}
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#toc>ul{margin-left:.125em}
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#toc ul.sectlevel0>li>a{font-style:italic}
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#toc ul.sectlevel0 ul.sectlevel1{margin:.5em 0}
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#toc ul{font-family:"Open Sans","DejaVu Sans",sans-serif;list-style-type:none}
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#toc li{line-height:1.3334;margin-top:.3334em}
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#toc a{text-decoration:none}
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#toc a:active{text-decoration:underline}
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#toctitle{color:#7a2518;font-size:1.2em}
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@media screen and (min-width:768px){#toctitle{font-size:1.375em}
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body.toc2{padding-left:15em;padding-right:0}
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#toc.toc2{margin-top:0!important;background-color:#f8f8f7;position:fixed;width:15em;left:0;top:0;border-right:1px solid #e7e7e9;border-top-width:0!important;border-bottom-width:0!important;z-index:1000;padding:1.25em 1em;height:100%;overflow:auto}
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#toc.toc2 #toctitle{margin-top:0;margin-bottom:.8rem;font-size:1.2em}
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#toc.toc2>ul{font-size:.9em;margin-bottom:0}
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#toc.toc2 ul ul{margin-left:0;padding-left:1em}
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#toc.toc2 ul.sectlevel0 ul.sectlevel1{padding-left:0;margin-top:.5em;margin-bottom:.5em}
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body.toc2.toc-right{padding-left:0;padding-right:15em}
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body.toc2.toc-right #toc.toc2{border-right-width:0;border-left:1px solid #e7e7e9;left:auto;right:0}}
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@media screen and (min-width:1280px){body.toc2{padding-left:20em;padding-right:0}
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#toc.toc2{width:20em}
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#toc.toc2 #toctitle{font-size:1.375em}
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#toc.toc2>ul{font-size:.95em}
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#toc.toc2 ul ul{padding-left:1.25em}
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body.toc2.toc-right{padding-left:0;padding-right:20em}}
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#content #toc{border-style:solid;border-width:1px;border-color:#e0e0dc;margin-bottom:1.25em;padding:1.25em;background:#f8f8f7;-webkit-border-radius:4px;border-radius:4px}
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#content #toc>:first-child{margin-top:0}
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#content #toc>:last-child{margin-bottom:0}
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#footer{max-width:100%;background-color:rgba(0,0,0,.8);padding:1.25em}
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#footer-text{color:rgba(255,255,255,.8);line-height:1.44}
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#content{margin-bottom:.625em}
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.sect1{padding-bottom:.625em}
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@media screen and (min-width:768px){#content{margin-bottom:1.25em}
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.sect1{padding-bottom:1.25em}}
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.sect1:last-child{padding-bottom:0}
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.sect1+.sect1{border-top:1px solid #e7e7e9}
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#content h1>a.anchor,h2>a.anchor,h3>a.anchor,#toctitle>a.anchor,.sidebarblock>.content>.title>a.anchor,h4>a.anchor,h5>a.anchor,h6>a.anchor{position:absolute;z-index:1001;width:1.5ex;margin-left:-1.5ex;display:block;text-decoration:none!important;visibility:hidden;text-align:center;font-weight:400}
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#content h1>a.anchor::before,h2>a.anchor::before,h3>a.anchor::before,#toctitle>a.anchor::before,.sidebarblock>.content>.title>a.anchor::before,h4>a.anchor::before,h5>a.anchor::before,h6>a.anchor::before{content:"\00A7";font-size:.85em;display:block;padding-top:.1em}
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#content h1:hover>a.anchor,#content h1>a.anchor:hover,h2:hover>a.anchor,h2>a.anchor:hover,h3:hover>a.anchor,#toctitle:hover>a.anchor,.sidebarblock>.content>.title:hover>a.anchor,h3>a.anchor:hover,#toctitle>a.anchor:hover,.sidebarblock>.content>.title>a.anchor:hover,h4:hover>a.anchor,h4>a.anchor:hover,h5:hover>a.anchor,h5>a.anchor:hover,h6:hover>a.anchor,h6>a.anchor:hover{visibility:visible}
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#content h1>a.link,h2>a.link,h3>a.link,#toctitle>a.link,.sidebarblock>.content>.title>a.link,h4>a.link,h5>a.link,h6>a.link{color:#ba3925;text-decoration:none}
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#content h1>a.link:hover,h2>a.link:hover,h3>a.link:hover,#toctitle>a.link:hover,.sidebarblock>.content>.title>a.link:hover,h4>a.link:hover,h5>a.link:hover,h6>a.link:hover{color:#a53221}
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.audioblock,.imageblock,.literalblock,.listingblock,.stemblock,.videoblock{margin-bottom:1.25em}
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.admonitionblock td.content>.title,.audioblock>.title,.exampleblock>.title,.imageblock>.title,.listingblock>.title,.literalblock>.title,.stemblock>.title,.openblock>.title,.paragraph>.title,.quoteblock>.title,table.tableblock>.title,.verseblock>.title,.videoblock>.title,.dlist>.title,.olist>.title,.ulist>.title,.qlist>.title,.hdlist>.title{text-rendering:optimizeLegibility;text-align:left;font-family:"Noto Serif","DejaVu Serif",serif;font-size:1rem;font-style:italic}
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table.tableblock.fit-content>caption.title{white-space:nowrap;width:0}
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.paragraph.lead>p,#preamble>.sectionbody>[class="paragraph"]:first-of-type p{font-size:1.21875em;line-height:1.6;color:rgba(0,0,0,.85)}
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table.tableblock #preamble>.sectionbody>[class="paragraph"]:first-of-type p{font-size:inherit}
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.admonitionblock>table{border-collapse:separate;border:0;background:none;width:100%}
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.admonitionblock>table td.icon{text-align:center;width:80px}
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.admonitionblock>table td.icon img{max-width:none}
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.admonitionblock>table td.icon .title{font-weight:bold;font-family:"Open Sans","DejaVu Sans",sans-serif;text-transform:uppercase}
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.admonitionblock>table td.content{padding-left:1.125em;padding-right:1.25em;border-left:1px solid #dddddf;color:rgba(0,0,0,.6)}
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.admonitionblock>table td.content>:last-child>:last-child{margin-bottom:0}
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.exampleblock>.content{border-style:solid;border-width:1px;border-color:#e6e6e6;margin-bottom:1.25em;padding:1.25em;background:#fff;-webkit-border-radius:4px;border-radius:4px}
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div.unbreakable{page-break-inside:avoid}
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.big{font-size:larger}
|
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|
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.underline{text-decoration:underline}
|
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.overline{text-decoration:overline}
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.aqua{color:#00bfbf}
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.gray{color:#606060}
|
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|
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|
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|
||
|
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|
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|
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|
||
|
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|
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|
||
|
.navy{color:#000060}
|
||
|
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|
||
|
.olive{color:#606000}
|
||
|
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|
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|
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|
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|
.purple-background{background-color:#7d007d}
|
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|
.red{color:#bf0000}
|
||
|
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|
||
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|
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|
||
|
.teal{color:#006060}
|
||
|
.teal-background{background-color:#007d7d}
|
||
|
.white{color:#bfbfbf}
|
||
|
.white-background{background-color:#fafafa}
|
||
|
.yellow{color:#bfbf00}
|
||
|
.yellow-background{background-color:#fafa00}
|
||
|
span.icon>.fa{cursor:default}
|
||
|
a span.icon>.fa{cursor:inherit}
|
||
|
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|
||
|
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|
||
|
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|
||
|
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|
||
|
.admonitionblock td.icon .icon-caution::before{content:"\f06d";color:#bf3400}
|
||
|
.admonitionblock td.icon .icon-important::before{content:"\f06a";color:#bf0000}
|
||
|
.conum[data-value]{display:inline-block;color:#fff!important;background-color:rgba(0,0,0,.8);-webkit-border-radius:100px;border-radius:100px;text-align:center;font-size:.75em;width:1.67em;height:1.67em;line-height:1.67em;font-family:"Open Sans","DejaVu Sans",sans-serif;font-style:normal;font-weight:bold}
|
||
|
.conum[data-value] *{color:#fff!important}
|
||
|
.conum[data-value]+b{display:none}
|
||
|
.conum[data-value]::after{content:attr(data-value)}
|
||
|
pre .conum[data-value]{position:relative;top:-.125em}
|
||
|
b.conum *{color:inherit!important}
|
||
|
.conum:not([data-value]):empty{display:none}
|
||
|
dt,th.tableblock,td.content,div.footnote{text-rendering:optimizeLegibility}
|
||
|
h1,h2,p,td.content,span.alt{letter-spacing:-.01em}
|
||
|
p strong,td.content strong,div.footnote strong{letter-spacing:-.005em}
|
||
|
p,blockquote,dt,td.content,span.alt{font-size:1.0625rem}
|
||
|
p{margin-bottom:1.25rem}
|
||
|
.sidebarblock p,.sidebarblock dt,.sidebarblock td.content,p.tableblock{font-size:1em}
|
||
|
.exampleblock>.content{background-color:#fffef7;border-color:#e0e0dc;-webkit-box-shadow:0 1px 4px #e0e0dc;box-shadow:0 1px 4px #e0e0dc}
|
||
|
.print-only{display:none!important}
|
||
|
@page{margin:1.25cm .75cm}
|
||
|
@media print{*{-webkit-box-shadow:none!important;box-shadow:none!important;text-shadow:none!important}
|
||
|
html{font-size:80%}
|
||
|
a{color:inherit!important;text-decoration:underline!important}
|
||
|
a.bare,a[href^="#"],a[href^="mailto:"]{text-decoration:none!important}
|
||
|
a[href^="http:"]:not(.bare)::after,a[href^="https:"]:not(.bare)::after{content:"(" attr(href) ")";display:inline-block;font-size:.875em;padding-left:.25em}
|
||
|
abbr[title]::after{content:" (" attr(title) ")"}
|
||
|
pre,blockquote,tr,img,object,svg{page-break-inside:avoid}
|
||
|
thead{display:table-header-group}
|
||
|
svg{max-width:100%}
|
||
|
p,blockquote,dt,td.content{font-size:1em;orphans:3;widows:3}
|
||
|
h2,h3,#toctitle,.sidebarblock>.content>.title{page-break-after:avoid}
|
||
|
#toc,.sidebarblock,.exampleblock>.content{background:none!important}
|
||
|
#toc{border-bottom:1px solid #dddddf!important;padding-bottom:0!important}
|
||
|
body.book #header{text-align:center}
|
||
|
body.book #header>h1:first-child{border:0!important;margin:2.5em 0 1em}
|
||
|
body.book #header .details{border:0!important;display:block;padding:0!important}
|
||
|
body.book #header .details span:first-child{margin-left:0!important}
|
||
|
body.book #header .details br{display:block}
|
||
|
body.book #header .details br+span::before{content:none!important}
|
||
|
body.book #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 print,amzn-kf8{#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> Git Wire Protocol, Version 2</h1>
|
||
|
</div>
|
||
|
<div id="content">
|
||
|
<div id="preamble">
|
||
|
<div class="sectionbody">
|
||
|
<div class="paragraph">
|
||
|
<p>This document presents a specification for a version 2 of Git’s wire
|
||
|
protocol. Protocol v2 will improve upon v1 in the following ways:</p>
|
||
|
</div>
|
||
|
<div class="ulist">
|
||
|
<ul>
|
||
|
<li>
|
||
|
<p>Instead of multiple service names, multiple commands will be
|
||
|
supported by a single service</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>Easily extendable as capabilities are moved into their own section
|
||
|
of the protocol, no longer being hidden behind a NUL byte and
|
||
|
limited by the size of a pkt-line</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>Separate out other information hidden behind NUL bytes (e.g. agent
|
||
|
string as a capability and symrefs can be requested using <em>ls-refs</em>)</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>Reference advertisement will be omitted unless explicitly requested</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>ls-refs command to explicitly request some refs</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>Designed with http and stateless-rpc in mind. With clear flush
|
||
|
semantics the http remote helper can simply act as a proxy</p>
|
||
|
</li>
|
||
|
</ul>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>In protocol v2 communication is command oriented. When first contacting a
|
||
|
server a list of capabilities will advertised. Some of these capabilities
|
||
|
will be commands which a client can request be executed. Once a command
|
||
|
has completed, a client can reuse the connection and request that other
|
||
|
commands be executed.</p>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="sect1">
|
||
|
<h2 id="_packet_line_framing"> Packet-Line Framing</h2>
|
||
|
<div class="sectionbody">
|
||
|
<div class="paragraph">
|
||
|
<p>All communication is done using packet-line framing, just as in v1. See
|
||
|
<code>Documentation/technical/pack-protocol.txt</code> and
|
||
|
<code>Documentation/technical/protocol-common.txt</code> for more information.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>In protocol v2 these special packets will have the following semantics:</p>
|
||
|
</div>
|
||
|
<div class="ulist">
|
||
|
<ul>
|
||
|
<li>
|
||
|
<p><em>0000</em> Flush Packet (flush-pkt) - indicates the end of a message</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p><em>0001</em> Delimiter Packet (delim-pkt) - separates sections of a message</p>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre>Initial Client Request</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content">
|
||
|
<pre></pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
</li>
|
||
|
</ul>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>In general a client can request to speak protocol v2 by sending
|
||
|
<code>version=2</code> through the respective side-channel for the transport being
|
||
|
used which inevitably sets <code>GIT_PROTOCOL</code>. More information can be
|
||
|
found in <code>pack-protocol.txt</code> and <code>http-protocol.txt</code>. In all cases the
|
||
|
response from the server is the capability advertisement.</p>
|
||
|
</div>
|
||
|
<div class="sect2">
|
||
|
<h3 id="_git_transport"> Git Transport</h3>
|
||
|
<div class="paragraph">
|
||
|
<p>When using the git:// transport, you can request to use protocol v2 by
|
||
|
sending "version=2" as an extra parameter:</p>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre>003egit-upload-pack /project.git\0host=myserver.com\0\0version=2\0</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="sect2">
|
||
|
<h3 id="_ssh_and_file_transport"> SSH and File Transport</h3>
|
||
|
<div class="paragraph">
|
||
|
<p>When using either the ssh:// or file:// transport, the GIT_PROTOCOL
|
||
|
environment variable must be set explicitly to include "version=2".</p>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="sect2">
|
||
|
<h3 id="_http_transport"> HTTP Transport</h3>
|
||
|
<div class="paragraph">
|
||
|
<p>When using the http:// or https:// transport a client makes a "smart"
|
||
|
info/refs request as described in <code>http-protocol.txt</code> and requests that
|
||
|
v2 be used by supplying "version=2" in the <code>Git-Protocol</code> header.</p>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre>C: GET $GIT_URL/info/refs?service=git-upload-pack HTTP/1.0
|
||
|
C: Git-Protocol: version=2</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>A v2 server would reply:</p>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre>S: 200 OK
|
||
|
S: <Some headers>
|
||
|
S: ...
|
||
|
S:
|
||
|
S: 000eversion 2\n
|
||
|
S: <capability-advertisement></pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>Subsequent requests are then made directly to the service
|
||
|
<code>$GIT_URL/git-upload-pack</code>. (This works the same for git-receive-pack).</p>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="sect1">
|
||
|
<h2 id="_capability_advertisement"> Capability Advertisement</h2>
|
||
|
<div class="sectionbody">
|
||
|
<div class="paragraph">
|
||
|
<p>A server which decides to communicate (based on a request from a client)
|
||
|
using protocol version 2, notifies the client by sending a version string
|
||
|
in its initial response followed by an advertisement of its capabilities.
|
||
|
Each capability is a key with an optional value. Clients must ignore all
|
||
|
unknown keys. Semantics of unknown values are left to the definition of
|
||
|
each key. Some capabilities will describe commands which can be requested
|
||
|
to be executed by the client.</p>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre>capability-advertisement = protocol-version
|
||
|
capability-list
|
||
|
flush-pkt</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre>protocol-version = PKT-LINE("version 2" LF)
|
||
|
capability-list = *capability
|
||
|
capability = PKT-LINE(key[=value] LF)</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre>key = 1*(ALPHA | DIGIT | "-_")
|
||
|
value = 1*(ALPHA | DIGIT | " -_.,?\/{}[]()<>!@#$%^&*+=:;")</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="sect1">
|
||
|
<h2 id="_command_request"> Command Request</h2>
|
||
|
<div class="sectionbody">
|
||
|
<div class="paragraph">
|
||
|
<p>After receiving the capability advertisement, a client can then issue a
|
||
|
request to select the command it wants with any particular capabilities
|
||
|
or arguments. There is then an optional section where the client can
|
||
|
provide any command specific parameters or queries. Only a single
|
||
|
command can be requested at a time.</p>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre>request = empty-request | command-request
|
||
|
empty-request = flush-pkt
|
||
|
command-request = command
|
||
|
capability-list
|
||
|
[command-args]
|
||
|
flush-pkt
|
||
|
command = PKT-LINE("command=" key LF)
|
||
|
command-args = delim-pkt
|
||
|
*command-specific-arg</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre>command-specific-args are packet line framed arguments defined by
|
||
|
each individual command.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>The server will then check to ensure that the client’s request is
|
||
|
comprised of a valid command as well as valid capabilities which were
|
||
|
advertised. If the request is valid the server will then execute the
|
||
|
command. A server MUST wait till it has received the client’s entire
|
||
|
request before issuing a response. The format of the response is
|
||
|
determined by the command being executed, but in all cases a flush-pkt
|
||
|
indicates the end of the response.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>When a command has finished, and the client has received the entire
|
||
|
response from the server, a client can either request that another
|
||
|
command be executed or can terminate the connection. A client may
|
||
|
optionally send an empty request consisting of just a flush-pkt to
|
||
|
indicate that no more requests will be made.</p>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="sect1">
|
||
|
<h2 id="_capabilities"> Capabilities</h2>
|
||
|
<div class="sectionbody">
|
||
|
<div class="paragraph">
|
||
|
<p>There are two different types of capabilities: normal capabilities,
|
||
|
which can be used to to convey information or alter the behavior of a
|
||
|
request, and commands, which are the core actions that a client wants to
|
||
|
perform (fetch, push, etc).</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>Protocol version 2 is stateless by default. This means that all commands
|
||
|
must only last a single round and be stateless from the perspective of the
|
||
|
server side, unless the client has requested a capability indicating that
|
||
|
state should be maintained by the server. Clients MUST NOT require state
|
||
|
management on the server side in order to function correctly. This
|
||
|
permits simple round-robin load-balancing on the server side, without
|
||
|
needing to worry about state management.</p>
|
||
|
</div>
|
||
|
<div class="sect2">
|
||
|
<h3 id="_agent"> agent</h3>
|
||
|
<div class="paragraph">
|
||
|
<p>The server can advertise the <code>agent</code> capability with a value <code>X</code> (in the
|
||
|
form <code>agent=X</code>) to notify the client that the server is running version
|
||
|
<code>X</code>. The client may optionally send its own agent string by including
|
||
|
the <code>agent</code> capability with a value <code>Y</code> (in the form <code>agent=Y</code>) in its
|
||
|
request to the server (but it MUST NOT do so if the server did not
|
||
|
advertise the agent capability). The <code>X</code> and <code>Y</code> strings may contain any
|
||
|
printable ASCII characters except space (i.e., the byte range 32 < x <
|
||
|
127), and are typically of the form "package/version" (e.g.,
|
||
|
"git/1.8.3.1"). The agent strings are purely informative for statistics
|
||
|
and debugging purposes, and MUST NOT be used to programmatically assume
|
||
|
the presence or absence of particular features.</p>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="sect2">
|
||
|
<h3 id="_ls_refs"> ls-refs</h3>
|
||
|
<div class="paragraph">
|
||
|
<p><code>ls-refs</code> is the command used to request a reference advertisement in v2.
|
||
|
Unlike the current reference advertisement, ls-refs takes in arguments
|
||
|
which can be used to limit the refs sent from the server.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>Additional features not supported in the base command will be advertised
|
||
|
as the value of the command in the capability advertisement in the form
|
||
|
of a space separated list of features: "<command>=<feature 1> <feature 2>"</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>ls-refs takes in the following arguments:</p>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> symrefs
|
||
|
In addition to the object pointed by it, show the underlying ref
|
||
|
pointed by it when showing a symbolic ref.
|
||
|
peel
|
||
|
Show peeled tags.
|
||
|
ref-prefix <prefix>
|
||
|
When specified, only references having a prefix matching one of
|
||
|
the provided prefixes are displayed.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>The output of ls-refs is as follows:</p>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre>output = *ref
|
||
|
flush-pkt
|
||
|
ref = PKT-LINE(obj-id SP refname *(SP ref-attribute) LF)
|
||
|
ref-attribute = (symref | peeled)
|
||
|
symref = "symref-target:" symref-target
|
||
|
peeled = "peeled:" obj-id</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="sect2">
|
||
|
<h3 id="_fetch"> fetch</h3>
|
||
|
<div class="paragraph">
|
||
|
<p><code>fetch</code> is the command used to fetch a packfile in v2. It can be looked
|
||
|
at as a modified version of the v1 fetch where the ref-advertisement is
|
||
|
stripped out (since the <code>ls-refs</code> command fills that role) and the
|
||
|
message format is tweaked to eliminate redundancies and permit easy
|
||
|
addition of future extensions.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>Additional features not supported in the base command will be advertised
|
||
|
as the value of the command in the capability advertisement in the form
|
||
|
of a space separated list of features: "<command>=<feature 1> <feature 2>"</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>A <code>fetch</code> request can take the following arguments:</p>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> want <oid>
|
||
|
Indicates to the server an object which the client wants to
|
||
|
retrieve. Wants can be anything and are not limited to
|
||
|
advertised objects.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> have <oid>
|
||
|
Indicates to the server an object which the client has locally.
|
||
|
This allows the server to make a packfile which only contains
|
||
|
the objects that the client needs. Multiple 'have' lines can be
|
||
|
supplied.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> done
|
||
|
Indicates to the server that negotiation should terminate (or
|
||
|
not even begin if performing a clone) and that the server should
|
||
|
use the information supplied in the request to construct the
|
||
|
packfile.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> thin-pack
|
||
|
Request that a thin pack be sent, which is a pack with deltas
|
||
|
which reference base objects not contained within the pack (but
|
||
|
are known to exist at the receiving end). This can reduce the
|
||
|
network traffic significantly, but it requires the receiving end
|
||
|
to know how to "thicken" these packs by adding the missing bases
|
||
|
to the pack.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> no-progress
|
||
|
Request that progress information that would normally be sent on
|
||
|
side-band channel 2, during the packfile transfer, should not be
|
||
|
sent. However, the side-band channel 3 is still used for error
|
||
|
responses.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> include-tag
|
||
|
Request that annotated tags should be sent if the objects they
|
||
|
point to are being sent.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> ofs-delta
|
||
|
Indicate that the client understands PACKv2 with delta referring
|
||
|
to its base by position in pack rather than by an oid. That is,
|
||
|
they can read OBJ_OFS_DELTA (ake type 6) in a packfile.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>If the <em>shallow</em> feature is advertised the following arguments can be
|
||
|
included in the clients request as well as the potential addition of the
|
||
|
<em>shallow-info</em> section in the server’s response as explained below.</p>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> shallow <oid>
|
||
|
A client must notify the server of all commits for which it only
|
||
|
has shallow copies (meaning that it doesn't have the parents of
|
||
|
a commit) by supplying a 'shallow <oid>' line for each such
|
||
|
object so that the server is aware of the limitations of the
|
||
|
client's history. This is so that the server is aware that the
|
||
|
client may not have all objects reachable from such commits.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> deepen <depth>
|
||
|
Requests that the fetch/clone should be shallow having a commit
|
||
|
depth of <depth> relative to the remote side.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> deepen-relative
|
||
|
Requests that the semantics of the "deepen" command be changed
|
||
|
to indicate that the depth requested is relative to the client's
|
||
|
current shallow boundary, instead of relative to the requested
|
||
|
commits.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> deepen-since <timestamp>
|
||
|
Requests that the shallow clone/fetch should be cut at a
|
||
|
specific time, instead of depth. Internally it's equivalent to
|
||
|
doing "git rev-list --max-age=<timestamp>". Cannot be used with
|
||
|
"deepen".</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> deepen-not <rev>
|
||
|
Requests that the shallow clone/fetch should be cut at a
|
||
|
specific revision specified by '<rev>', instead of a depth.
|
||
|
Internally it's equivalent of doing "git rev-list --not <rev>".
|
||
|
Cannot be used with "deepen", but can be used with
|
||
|
"deepen-since".</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>If the <em>filter</em> feature is advertised, the following argument can be
|
||
|
included in the client’s request:</p>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> filter <filter-spec>
|
||
|
Request that various objects from the packfile be omitted
|
||
|
using one of several filtering techniques. These are intended
|
||
|
for use with partial clone and partial fetch operations. See
|
||
|
`rev-list` for possible "filter-spec" values. When communicating
|
||
|
with other processes, senders SHOULD translate scaled integers
|
||
|
(e.g. "1k") into a fully-expanded form (e.g. "1024") to aid
|
||
|
interoperability with older receivers that may not understand
|
||
|
newly-invented scaling suffixes. However, receivers SHOULD
|
||
|
accept the following suffixes: 'k', 'm', and 'g' for 1024,
|
||
|
1048576, and 1073741824, respectively.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>If the <em>ref-in-want</em> feature is advertised, the following argument can
|
||
|
be included in the client’s request as well as the potential addition of
|
||
|
the <em>wanted-refs</em> section in the server’s response as explained below.</p>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> want-ref <ref>
|
||
|
Indicates to the server that the client wants to retrieve a
|
||
|
particular ref, where <ref> is the full name of a ref on the
|
||
|
server.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>If the <em>sideband-all</em> feature is advertised, the following argument can be
|
||
|
included in the client’s request:</p>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> sideband-all
|
||
|
Instruct the server to send the whole response multiplexed, not just
|
||
|
the packfile section. All non-flush and non-delim PKT-LINE in the
|
||
|
response (not only in the packfile section) will then start with a byte
|
||
|
indicating its sideband (1, 2, or 3), and the server may send "0005\2"
|
||
|
(a PKT-LINE of sideband 2 with no payload) as a keepalive packet.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>The response of <code>fetch</code> is broken into a number of sections separated by
|
||
|
delimiter packets (0001), with each section beginning with its section
|
||
|
header.</p>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre>output = *section
|
||
|
section = (acknowledgments | shallow-info | wanted-refs | packfile)
|
||
|
(flush-pkt | delim-pkt)</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre>acknowledgments = PKT-LINE("acknowledgments" LF)
|
||
|
(nak | *ack)
|
||
|
(ready)
|
||
|
ready = PKT-LINE("ready" LF)
|
||
|
nak = PKT-LINE("NAK" LF)
|
||
|
ack = PKT-LINE("ACK" SP obj-id LF)</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre>shallow-info = PKT-LINE("shallow-info" LF)
|
||
|
*PKT-LINE((shallow | unshallow) LF)
|
||
|
shallow = "shallow" SP obj-id
|
||
|
unshallow = "unshallow" SP obj-id</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre>wanted-refs = PKT-LINE("wanted-refs" LF)
|
||
|
*PKT-LINE(wanted-ref LF)
|
||
|
wanted-ref = obj-id SP refname</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre>packfile = PKT-LINE("packfile" LF)
|
||
|
*PKT-LINE(%x01-03 *%x00-ff)</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> acknowledgments section
|
||
|
* If the client determines that it is finished with negotiations
|
||
|
by sending a "done" line, the acknowledgments sections MUST be
|
||
|
omitted from the server's response.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="ulist">
|
||
|
<ul>
|
||
|
<li>
|
||
|
<p>Always begins with the section header "acknowledgments"</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>The server will respond with "NAK" if none of the object ids sent
|
||
|
as have lines were common.</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>The server will respond with "ACK obj-id" for all of the
|
||
|
object ids sent as have lines which are common.</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>A response cannot have both "ACK" lines as well as a "NAK"
|
||
|
line.</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>The server will respond with a "ready" line indicating that
|
||
|
the server has found an acceptable common base and is ready to
|
||
|
make and send a packfile (which will be found in the packfile
|
||
|
section of the same response)</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>If the server has found a suitable cut point and has decided
|
||
|
to send a "ready" line, then the server can decide to (as an
|
||
|
optimization) omit any "ACK" lines it would have sent during
|
||
|
its response. This is because the server will have already
|
||
|
determined the objects it plans to send to the client and no
|
||
|
further negotiation is needed.</p>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> shallow-info section
|
||
|
* If the client has requested a shallow fetch/clone, a shallow
|
||
|
client requests a fetch or the server is shallow then the
|
||
|
server's response may include a shallow-info section. The
|
||
|
shallow-info section will be included if (due to one of the
|
||
|
above conditions) the server needs to inform the client of any
|
||
|
shallow boundaries or adjustments to the clients already
|
||
|
existing shallow boundaries.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>Always begins with the section header "shallow-info"</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>If a positive depth is requested, the server will compute the
|
||
|
set of commits which are no deeper than the desired depth.</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>The server sends a "shallow obj-id" line for each commit whose
|
||
|
parents will not be sent in the following packfile.</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>The server sends an "unshallow obj-id" line for each commit
|
||
|
which the client has indicated is shallow, but is no longer
|
||
|
shallow as a result of the fetch (due to its parents being
|
||
|
sent in the following packfile).</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>The server MUST NOT send any "unshallow" lines for anything
|
||
|
which the client has not indicated was shallow as a part of
|
||
|
its request.</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>This section is only included if a packfile section is also
|
||
|
included in the response.</p>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> wanted-refs section
|
||
|
* This section is only included if the client has requested a
|
||
|
ref using a 'want-ref' line and if a packfile section is also
|
||
|
included in the response.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>Always begins with the section header "wanted-refs".</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>The server will send a ref listing ("<oid> <refname>") for
|
||
|
each reference requested using <em>want-ref</em> lines.</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>The server MUST NOT send any refs which were not requested
|
||
|
using <em>want-ref</em> lines.</p>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> packfile section
|
||
|
* This section is only included if the client has sent 'want'
|
||
|
lines in its request and either requested that no more
|
||
|
negotiation be done by sending 'done' or if the server has
|
||
|
decided it has found a sufficient cut point to produce a
|
||
|
packfile.</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>Always begins with the section header "packfile"</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>The transmission of the packfile begins immediately after the
|
||
|
section header</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>The data transfer of the packfile is always multiplexed, using
|
||
|
the same semantics of the <em>side-band-64k</em> capability from
|
||
|
protocol version 1. This means that each packet, during the
|
||
|
packfile data stream, is made up of a leading 4-byte pkt-line
|
||
|
length (typical of the pkt-line format), followed by a 1-byte
|
||
|
stream code, followed by the actual data.</p>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> The stream code can be one of:
|
||
|
1 - pack data
|
||
|
2 - progress messages
|
||
|
3 - fatal error message just before stream aborts</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="literalblock">
|
||
|
<div class="content">
|
||
|
<pre> server-option
|
||
|
~~~~~~~~~~~~~~~</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
</li>
|
||
|
</ul>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>If advertised, indicates that any number of server specific options can be
|
||
|
included in a request. This is done by sending each option as a
|
||
|
"server-option=<option>" capability line in the capability-list section of
|
||
|
a request.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>The provided options must not contain a NUL or LF character.</p>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div id="footer">
|
||
|
<div id="footer-text">
|
||
|
Last updated 2019-02-26 19:31:11 UTC
|
||
|
</div>
|
||
|
</div>
|
||
|
</body>
|
||
|
</html>
|