Tell the client the connection is closing after each response - #212

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Tell the client the connection is closing after each response#212
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Fixes#211.

handleHTTPConnection and handleTLSConnection each read one request and close the connection in a defer, but neither response says so. The upstream Connection: keep-alive is not passed through either, so a client that pools sockets, Node's https.Agent({keepAlive: true}) in the report, keeps the socket and the next write lands on a connection the proxy has already gone away from. That is the alternating socket hang up in the issue, and it is why code-server --install-extension fails outright and npm install crawls.

RFC 9112 section 9.6 puts that on the sender: if you are going to close, say so. The forwarded response now drops any upstream Connection header and sets resp.Close, so Response.Write emits Connection: close, and the blocked 403 does the same.

This is the first of the two options in the issue. Actually keeping connections alive, the second option, is the better outcome for throughput, but it means holding the connection open and looping over requests in both handlers, which is a larger change and a design call for you rather than something to slip into a bug fix.

The test starts a local backend, goes through the proxy for one allowed and one blocked request, and asserts resp.Close on both. It fails on main with "response must tell the client the connection is closing". go test -race ./proxy/ passes.

Signed-off-by: Arpit Jain <arpitjain099@gmail.com>
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Keep-alive connections are closed without Connection: close, breaking socket reuse (code-server extension install fails; npm ~90x slower)

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
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Tell the client the connection is closing after each response - #212

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arpitjain099:fix/signal-connection-close
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Tell the client the connection is closing after each response#212
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arpitjain099:fix/signal-connection-close

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Fixes#211.

handleHTTPConnection and handleTLSConnection each read one request and close the connection in a defer, but neither response says so. The upstream Connection: keep-alive is not passed through either, so a client that pools sockets, Node's https.Agent({keepAlive: true}) in the report, keeps the socket and the next write lands on a connection the proxy has already gone away from. That is the alternating socket hang up in the issue, and it is why code-server --install-extension fails outright and npm install crawls.

RFC 9112 section 9.6 puts that on the sender: if you are going to close, say so. The forwarded response now drops any upstream Connection header and sets resp.Close, so Response.Write emits Connection: close, and the blocked 403 does the same.

This is the first of the two options in the issue. Actually keeping connections alive, the second option, is the better outcome for throughput, but it means holding the connection open and looping over requests in both handlers, which is a larger change and a design call for you rather than something to slip into a bug fix.

The test starts a local backend, goes through the proxy for one allowed and one blocked request, and asserts resp.Close on both. It fails on main with "response must tell the client the connection is closing". go test -race ./proxy/ passes.

Signed-off-by: Arpit Jain <arpitjain099@gmail.com>
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Keep-alive connections are closed without Connection: close, breaking socket reuse (code-server extension install fails; npm ~90x slower)

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix"); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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Tell the client the connection is closing after each response - #212

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arpitjain099:fix/signal-connection-close
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Tell the client the connection is closing after each response#212
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arpitjain099:fix/signal-connection-close

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Fixes#211.

handleHTTPConnection and handleTLSConnection each read one request and close the connection in a defer, but neither response says so. The upstream Connection: keep-alive is not passed through either, so a client that pools sockets, Node's https.Agent({keepAlive: true}) in the report, keeps the socket and the next write lands on a connection the proxy has already gone away from. That is the alternating socket hang up in the issue, and it is why code-server --install-extension fails outright and npm install crawls.

RFC 9112 section 9.6 puts that on the sender: if you are going to close, say so. The forwarded response now drops any upstream Connection header and sets resp.Close, so Response.Write emits Connection: close, and the blocked 403 does the same.

This is the first of the two options in the issue. Actually keeping connections alive, the second option, is the better outcome for throughput, but it means holding the connection open and looping over requests in both handlers, which is a larger change and a design call for you rather than something to slip into a bug fix.

The test starts a local backend, goes through the proxy for one allowed and one blocked request, and asserts resp.Close on both. It fails on main with "response must tell the client the connection is closing". go test -race ./proxy/ passes.

Signed-off-by: Arpit Jain <arpitjain099@gmail.com>
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Keep-alive connections are closed without Connection: close, breaking socket reuse (code-server extension install fails; npm ~90x slower)

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@arpitjain099
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms"); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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Tell the client the connection is closing after each response - #212

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arpitjain099:fix/signal-connection-close
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Tell the client the connection is closing after each response#212
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arpitjain099:fix/signal-connection-close

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Fixes#211.

handleHTTPConnection and handleTLSConnection each read one request and close the connection in a defer, but neither response says so. The upstream Connection: keep-alive is not passed through either, so a client that pools sockets, Node's https.Agent({keepAlive: true}) in the report, keeps the socket and the next write lands on a connection the proxy has already gone away from. That is the alternating socket hang up in the issue, and it is why code-server --install-extension fails outright and npm install crawls.

RFC 9112 section 9.6 puts that on the sender: if you are going to close, say so. The forwarded response now drops any upstream Connection header and sets resp.Close, so Response.Write emits Connection: close, and the blocked 403 does the same.

This is the first of the two options in the issue. Actually keeping connections alive, the second option, is the better outcome for throughput, but it means holding the connection open and looping over requests in both handlers, which is a larger change and a design call for you rather than something to slip into a bug fix.

The test starts a local backend, goes through the proxy for one allowed and one blocked request, and asserts resp.Close on both. It fails on main with "response must tell the client the connection is closing". go test -race ./proxy/ passes.

Signed-off-by: Arpit Jain <arpitjain099@gmail.com>
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Keep-alive connections are closed without Connection: close, breaking socket reuse (code-server extension install fails; npm ~90x slower)

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@arpitjain099
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links"); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + '
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Tell the client the connection is closing after each response - #212

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arpitjain099:fix/signal-connection-close
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Tell the client the connection is closing after each response#212
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arpitjain099:fix/signal-connection-close

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Fixes#211.

handleHTTPConnection and handleTLSConnection each read one request and close the connection in a defer, but neither response says so. The upstream Connection: keep-alive is not passed through either, so a client that pools sockets, Node's https.Agent({keepAlive: true}) in the report, keeps the socket and the next write lands on a connection the proxy has already gone away from. That is the alternating socket hang up in the issue, and it is why code-server --install-extension fails outright and npm install crawls.

RFC 9112 section 9.6 puts that on the sender: if you are going to close, say so. The forwarded response now drops any upstream Connection header and sets resp.Close, so Response.Write emits Connection: close, and the blocked 403 does the same.

This is the first of the two options in the issue. Actually keeping connections alive, the second option, is the better outcome for throughput, but it means holding the connection open and looping over requests in both handlers, which is a larger change and a design call for you rather than something to slip into a bug fix.

The test starts a local backend, goes through the proxy for one allowed and one blocked request, and asserts resp.Close on both. It fails on main with "response must tell the client the connection is closing". go test -race ./proxy/ passes.

Signed-off-by: Arpit Jain <arpitjain099@gmail.com>
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Keep-alive connections are closed without Connection: close, breaking socket reuse (code-server extension install fails; npm ~90x slower)

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@arpitjain099
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default"); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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Tell the client the connection is closing after each response - #212

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arpitjain099:fix/signal-connection-close
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Tell the client the connection is closing after each response#212
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arpitjain099:fix/signal-connection-close

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Fixes#211.

handleHTTPConnection and handleTLSConnection each read one request and close the connection in a defer, but neither response says so. The upstream Connection: keep-alive is not passed through either, so a client that pools sockets, Node's https.Agent({keepAlive: true}) in the report, keeps the socket and the next write lands on a connection the proxy has already gone away from. That is the alternating socket hang up in the issue, and it is why code-server --install-extension fails outright and npm install crawls.

RFC 9112 section 9.6 puts that on the sender: if you are going to close, say so. The forwarded response now drops any upstream Connection header and sets resp.Close, so Response.Write emits Connection: close, and the blocked 403 does the same.

This is the first of the two options in the issue. Actually keeping connections alive, the second option, is the better outcome for throughput, but it means holding the connection open and looping over requests in both handlers, which is a larger change and a design call for you rather than something to slip into a bug fix.

The test starts a local backend, goes through the proxy for one allowed and one blocked request, and asserts resp.Close on both. It fails on main with "response must tell the client the connection is closing". go test -race ./proxy/ passes.

Signed-off-by: Arpit Jain <arpitjain099@gmail.com>
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Keep-alive connections are closed without Connection: close, breaking socket reuse (code-server extension install fails; npm ~90x slower)

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@arpitjain099
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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Tell the client the connection is closing after each response - #212

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arpitjain099:fix/signal-connection-close
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Tell the client the connection is closing after each response#212
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Fixes#211.

handleHTTPConnection and handleTLSConnection each read one request and close the connection in a defer, but neither response says so. The upstream Connection: keep-alive is not passed through either, so a client that pools sockets, Node's https.Agent({keepAlive: true}) in the report, keeps the socket and the next write lands on a connection the proxy has already gone away from. That is the alternating socket hang up in the issue, and it is why code-server --install-extension fails outright and npm install crawls.

RFC 9112 section 9.6 puts that on the sender: if you are going to close, say so. The forwarded response now drops any upstream Connection header and sets resp.Close, so Response.Write emits Connection: close, and the blocked 403 does the same.

This is the first of the two options in the issue. Actually keeping connections alive, the second option, is the better outcome for throughput, but it means holding the connection open and looping over requests in both handlers, which is a larger change and a design call for you rather than something to slip into a bug fix.

The test starts a local backend, goes through the proxy for one allowed and one blocked request, and asserts resp.Close on both. It fails on main with "response must tell the client the connection is closing". go test -race ./proxy/ passes.

Signed-off-by: Arpit Jain <arpitjain099@gmail.com>
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Keep-alive connections are closed without Connection: close, breaking socket reuse (code-server extension install fails; npm ~90x slower)

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@arpitjain099
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode"); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })();
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Tell the client the connection is closing after each response - #212

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arpitjain099:fix/signal-connection-close
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Tell the client the connection is closing after each response#212
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Fixes#211.

handleHTTPConnection and handleTLSConnection each read one request and close the connection in a defer, but neither response says so. The upstream Connection: keep-alive is not passed through either, so a client that pools sockets, Node's https.Agent({keepAlive: true}) in the report, keeps the socket and the next write lands on a connection the proxy has already gone away from. That is the alternating socket hang up in the issue, and it is why code-server --install-extension fails outright and npm install crawls.

RFC 9112 section 9.6 puts that on the sender: if you are going to close, say so. The forwarded response now drops any upstream Connection header and sets resp.Close, so Response.Write emits Connection: close, and the blocked 403 does the same.

This is the first of the two options in the issue. Actually keeping connections alive, the second option, is the better outcome for throughput, but it means holding the connection open and looping over requests in both handlers, which is a larger change and a design call for you rather than something to slip into a bug fix.

The test starts a local backend, goes through the proxy for one allowed and one blocked request, and asserts resp.Close on both. It fails on main with "response must tell the client the connection is closing". go test -race ./proxy/ passes.

Signed-off-by: Arpit Jain <arpitjain099@gmail.com>
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Keep-alive connections are closed without Connection: close, breaking socket reuse (code-server extension install fails; npm ~90x slower)

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@arpitjain099