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Open Screen Protocol

This repository is used to incubate and develop the Open Screen Protocol, which is a suite of network protocols that allow user agents to implement the Presentation API and Remote Playback API in an interoperable fashion.

The explainer goes into more depth regarding the motivation, and rationale, and design choices for the protocol.

This work is in scope for the W3C Second Screen Working Group (Charter).

Please refer to the group's Work Mode for instructions on how to contribute.

The protocol will meet the functional and non-functional requirements of the respective APIs as well as hardware requirements for prospective implementations.

Status

The protocol is considered to be complete for the requirements above. It will be published as a First Public Working Draft in mid-March 2021. The remaining issues on the draft are tagged v1-spec in GitHub and noted inline in the spec.

Related technologies

The Open Screen Protocol is built on the following standardized technologies:

  • mDNS/DNS-SD to allow networked devices that support OSP (Open Screen agents) to discover each other;
  • TLS 1.3 and a Password-Authenticated Key Exchange (PAKE) to create a secure channel between agents;
  • QUIC to transport data and media between agents;
  • CBOR to encode structured data and media on-the-wire.

Background Information

The excellent Discovery and Pairing Literature Review by @chrisn and @libbymiller covers a wide range of existing technologies for ad-hoc interconnection among networked devices, including mDNS/DNS-SD and SSDP.

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Open Screen Protocol

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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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Repository files navigation

Open Screen Protocol

This repository is used to incubate and develop the Open Screen Protocol, which is a suite of network protocols that allow user agents to implement the Presentation API and Remote Playback API in an interoperable fashion.

The explainer goes into more depth regarding the motivation, and rationale, and design choices for the protocol.

This work is in scope for the W3C Second Screen Working Group (Charter).

Please refer to the group's Work Mode for instructions on how to contribute.

The protocol will meet the functional and non-functional requirements of the respective APIs as well as hardware requirements for prospective implementations.

Status

The protocol is considered to be complete for the requirements above. It will be published as a First Public Working Draft in mid-March 2021. The remaining issues on the draft are tagged v1-spec in GitHub and noted inline in the spec.

Related technologies

The Open Screen Protocol is built on the following standardized technologies:

  • mDNS/DNS-SD to allow networked devices that support OSP (Open Screen agents) to discover each other;
  • TLS 1.3 and a Password-Authenticated Key Exchange (PAKE) to create a secure channel between agents;
  • QUIC to transport data and media between agents;
  • CBOR to encode structured data and media on-the-wire.

Background Information

The excellent Discovery and Pairing Literature Review by @chrisn and @libbymiller covers a wide range of existing technologies for ad-hoc interconnection among networked devices, including mDNS/DNS-SD and SSDP.

About

Open Screen Protocol

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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('^' + ".*" + '
Skip to content

Repository files navigation

Open Screen Protocol

This repository is used to incubate and develop the Open Screen Protocol, which is a suite of network protocols that allow user agents to implement the Presentation API and Remote Playback API in an interoperable fashion.

The explainer goes into more depth regarding the motivation, and rationale, and design choices for the protocol.

This work is in scope for the W3C Second Screen Working Group (Charter).

Please refer to the group's Work Mode for instructions on how to contribute.

The protocol will meet the functional and non-functional requirements of the respective APIs as well as hardware requirements for prospective implementations.

Status

The protocol is considered to be complete for the requirements above. It will be published as a First Public Working Draft in mid-March 2021. The remaining issues on the draft are tagged v1-spec in GitHub and noted inline in the spec.

Related technologies

The Open Screen Protocol is built on the following standardized technologies:

  • mDNS/DNS-SD to allow networked devices that support OSP (Open Screen agents) to discover each other;
  • TLS 1.3 and a Password-Authenticated Key Exchange (PAKE) to create a secure channel between agents;
  • QUIC to transport data and media between agents;
  • CBOR to encode structured data and media on-the-wire.

Background Information

The excellent Discovery and Pairing Literature Review by @chrisn and @libbymiller covers a wide range of existing technologies for ad-hoc interconnection among networked devices, including mDNS/DNS-SD and SSDP.

About

Open Screen Protocol

Resources

Code of conduct

Contributing

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0 stars

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0 watching

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, '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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Repository files navigation

Open Screen Protocol

This repository is used to incubate and develop the Open Screen Protocol, which is a suite of network protocols that allow user agents to implement the Presentation API and Remote Playback API in an interoperable fashion.

The explainer goes into more depth regarding the motivation, and rationale, and design choices for the protocol.

This work is in scope for the W3C Second Screen Working Group (Charter).

Please refer to the group's Work Mode for instructions on how to contribute.

The protocol will meet the functional and non-functional requirements of the respective APIs as well as hardware requirements for prospective implementations.

Status

The protocol is considered to be complete for the requirements above. It will be published as a First Public Working Draft in mid-March 2021. The remaining issues on the draft are tagged v1-spec in GitHub and noted inline in the spec.

Related technologies

The Open Screen Protocol is built on the following standardized technologies:

  • mDNS/DNS-SD to allow networked devices that support OSP (Open Screen agents) to discover each other;
  • TLS 1.3 and a Password-Authenticated Key Exchange (PAKE) to create a secure channel between agents;
  • QUIC to transport data and media between agents;
  • CBOR to encode structured data and media on-the-wire.

Background Information

The excellent Discovery and Pairing Literature Review by @chrisn and @libbymiller covers a wide range of existing technologies for ad-hoc interconnection among networked devices, including mDNS/DNS-SD and SSDP.

About

Open Screen Protocol

Resources

Code of conduct

Contributing

Stars

0 stars

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0 watching

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, '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" + '
Skip to content

Repository files navigation

Open Screen Protocol

This repository is used to incubate and develop the Open Screen Protocol, which is a suite of network protocols that allow user agents to implement the Presentation API and Remote Playback API in an interoperable fashion.

The explainer goes into more depth regarding the motivation, and rationale, and design choices for the protocol.

This work is in scope for the W3C Second Screen Working Group (Charter).

Please refer to the group's Work Mode for instructions on how to contribute.

The protocol will meet the functional and non-functional requirements of the respective APIs as well as hardware requirements for prospective implementations.

Status

The protocol is considered to be complete for the requirements above. It will be published as a First Public Working Draft in mid-March 2021. The remaining issues on the draft are tagged v1-spec in GitHub and noted inline in the spec.

Related technologies

The Open Screen Protocol is built on the following standardized technologies:

  • mDNS/DNS-SD to allow networked devices that support OSP (Open Screen agents) to discover each other;
  • TLS 1.3 and a Password-Authenticated Key Exchange (PAKE) to create a secure channel between agents;
  • QUIC to transport data and media between agents;
  • CBOR to encode structured data and media on-the-wire.

Background Information

The excellent Discovery and Pairing Literature Review by @chrisn and @libbymiller covers a wide range of existing technologies for ad-hoc interconnection among networked devices, including mDNS/DNS-SD and SSDP.

About

Open Screen Protocol

Resources

Code of conduct

Contributing

Stars

0 stars

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0 watching

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, '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('^' + ".*" + '
Skip to content

Repository files navigation

Open Screen Protocol

This repository is used to incubate and develop the Open Screen Protocol, which is a suite of network protocols that allow user agents to implement the Presentation API and Remote Playback API in an interoperable fashion.

The explainer goes into more depth regarding the motivation, and rationale, and design choices for the protocol.

This work is in scope for the W3C Second Screen Working Group (Charter).

Please refer to the group's Work Mode for instructions on how to contribute.

The protocol will meet the functional and non-functional requirements of the respective APIs as well as hardware requirements for prospective implementations.

Status

The protocol is considered to be complete for the requirements above. It will be published as a First Public Working Draft in mid-March 2021. The remaining issues on the draft are tagged v1-spec in GitHub and noted inline in the spec.

Related technologies

The Open Screen Protocol is built on the following standardized technologies:

  • mDNS/DNS-SD to allow networked devices that support OSP (Open Screen agents) to discover each other;
  • TLS 1.3 and a Password-Authenticated Key Exchange (PAKE) to create a secure channel between agents;
  • QUIC to transport data and media between agents;
  • CBOR to encode structured data and media on-the-wire.

Background Information

The excellent Discovery and Pairing Literature Review by @chrisn and @libbymiller covers a wide range of existing technologies for ad-hoc interconnection among networked devices, including mDNS/DNS-SD and SSDP.

About

Open Screen Protocol

Resources

Code of conduct

Contributing

Stars

0 stars

Watchers

0 watching

Forks

Releases

Packages

Contributors

Languages

, '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('^' + ".*" + '
Skip to content

Repository files navigation

Open Screen Protocol

This repository is used to incubate and develop the Open Screen Protocol, which is a suite of network protocols that allow user agents to implement the Presentation API and Remote Playback API in an interoperable fashion.

The explainer goes into more depth regarding the motivation, and rationale, and design choices for the protocol.

This work is in scope for the W3C Second Screen Working Group (Charter).

Please refer to the group's Work Mode for instructions on how to contribute.

The protocol will meet the functional and non-functional requirements of the respective APIs as well as hardware requirements for prospective implementations.

Status

The protocol is considered to be complete for the requirements above. It will be published as a First Public Working Draft in mid-March 2021. The remaining issues on the draft are tagged v1-spec in GitHub and noted inline in the spec.

Related technologies

The Open Screen Protocol is built on the following standardized technologies:

  • mDNS/DNS-SD to allow networked devices that support OSP (Open Screen agents) to discover each other;
  • TLS 1.3 and a Password-Authenticated Key Exchange (PAKE) to create a secure channel between agents;
  • QUIC to transport data and media between agents;
  • CBOR to encode structured data and media on-the-wire.

Background Information

The excellent Discovery and Pairing Literature Review by @chrisn and @libbymiller covers a wide range of existing technologies for ad-hoc interconnection among networked devices, including mDNS/DNS-SD and SSDP.

About

Open Screen Protocol

Resources

Code of conduct

Contributing

Stars

0 stars

Watchers

0 watching

Forks

Releases

Packages

Contributors

Languages

, '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); } })(); })();
Skip to content

Repository files navigation

Open Screen Protocol

This repository is used to incubate and develop the Open Screen Protocol, which is a suite of network protocols that allow user agents to implement the Presentation API and Remote Playback API in an interoperable fashion.

The explainer goes into more depth regarding the motivation, and rationale, and design choices for the protocol.

This work is in scope for the W3C Second Screen Working Group (Charter).

Please refer to the group's Work Mode for instructions on how to contribute.

The protocol will meet the functional and non-functional requirements of the respective APIs as well as hardware requirements for prospective implementations.

Status

The protocol is considered to be complete for the requirements above. It will be published as a First Public Working Draft in mid-March 2021. The remaining issues on the draft are tagged v1-spec in GitHub and noted inline in the spec.

Related technologies

The Open Screen Protocol is built on the following standardized technologies:

  • mDNS/DNS-SD to allow networked devices that support OSP (Open Screen agents) to discover each other;
  • TLS 1.3 and a Password-Authenticated Key Exchange (PAKE) to create a secure channel between agents;
  • QUIC to transport data and media between agents;
  • CBOR to encode structured data and media on-the-wire.

Background Information

The excellent Discovery and Pairing Literature Review by @chrisn and @libbymiller covers a wide range of existing technologies for ad-hoc interconnection among networked devices, including mDNS/DNS-SD and SSDP.

About

Open Screen Protocol

Resources

Code of conduct

Contributing

Stars

0 stars

Watchers

0 watching

Forks

Releases

Packages

Contributors

Languages