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EventSource

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EventSource is a Swift package that provides a simple implementation of a client for Server-Sent Events (SSE). It allows you to easily receive real-time updates from a server over a persistent HTTP connection, using a simple and efficient interface.

It also leverages Swift concurrency features to provide a more expressive and intuitive way to handle asynchronous operations.

Note

Please note that this package was originally developed to be used in conjunction with another package, and as such, it may not cover all specification details. Please be aware of this limitation when evaluating whether EventSource is suitable for your specific use case.

Features

  • Simple Swift API for SSE
  • Supports data-only mode
  • Data race safety with Swift 6

Installation

The module name of the package is EventSource. Choose one of the instructions below to install and add the following import statement to your source code.

import EventSource

Xcode Package Dependency

From Xcode menu: File > Swift Packages > Add Package Dependency

https://github.com/Recouse/EventSource

Swift Package Manager

In your Package.swift file, first add the following to the package dependencies:

.package(url:"https://github.com/Recouse/EventSource.git"),

And then, include "EventSource" as a dependency for your target:

.target(name:"<target>", dependencies:[.product(name:"EventSource",package:"EventSource"),]),

Usage

Using EventSource is easy. Simply create a new data task from an instance of EventSource with the URLRequest of the SSE endpoint you want to connect to, and await for events:

import EventSource
lettask=Task{leteventSource=EventSource()letdataTask= eventSource.dataTask(for: urlRequest)forawaiteventin dataTask.events(){switch event {case.open:print("Connection was opened.")case.error(let error):print("Received an error:", error.localizedDescription)case.event(let event):print("Received an event", event.data ??"")case.closed:print("Connection was closed.")}}}

Use task.cancel() to explicitly close the connection. However, in that case .closed event won't be emitted.

Data-only mode

EventSource can be used in data-only mode, making it suitable for popular APIs like OpenAI. Below is an example using OpenAI's completions API:

Task{varurlRequest=URLRequest(url:URL(string:"https://api.openai.com/v1/chat/completions")!)
urlRequest.allHTTPHeaderFields =["Content-Type":"application/json","Authorization":"Bearer \(accessToken)"]
urlRequest.httpMethod ="POST"
urlRequest.httpBody =""" {"model": "gpt-4o-mini","messages": [ {"role": "user", "content": "Why is the sky blue?"} ],"stream": true }""".data(using:.utf8)!
leteventSource=EventSource(mode:.dataOnly)letdataTask= eventSource.dataTask(for: urlRequest)varresponse:String=""forawaiteventin dataTask.events(){switch event {case.event(let event):iflet data = eventDevent.data?.data(using:.utf8){letchunk=try?JSONDecoder().decode(ChatCompletionChunk.self, from: data)letstring= chunk?.choices.first?.delta.content ??""
response += string
}default:break}}print(response)}

Compatibility

  • macOS 10.15+
  • iOS 13.0+
  • tvOS 13.0+
  • watchOS 6.0+
  • visionOS 1.0+

Dependencies

No dependencies.

Contributing

Contributions to are always welcomed! For more details see CONTRIBUTING.md.

Credits

License

EventSource is released under the MIT License. See LICENSE for more information.

About

Server-sent events in Swift

Resources

Readme
License

Code of conduct

Code of conduct

Contributing

Contributing
Activity

Stars

0 stars

Watchers

0 watching

Forks

0 forks
Report repository

Releases

Packages

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
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btn.textContent = 'Copy';
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btn.onmouseover = function() { this.style.opacity = '1'; };
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navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
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}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
BranchesTags
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EventSource
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EventSource is a Swift package that provides a simple implementation of a client for Server-Sent Events (SSE). It allows you to easily receive real-time updates from a server over a persistent HTTP connection, using a simple and efficient interface.
It also leverages Swift concurrency features to provide a more expressive and intuitive way to handle asynchronous operations.
Note
Please note that this package was originally developed to be used in conjunction with another package, and as such, it may not cover all specification details. Please be aware of this limitation when evaluating whether EventSource is suitable for your specific use case.
Features
  •  Simple Swift API for SSE
  •  Supports data-only mode
  •  Data race safety with Swift 6
Installation
The module name of the package is EventSource. Choose one of the instructions below to install and add the following import statement to your source code.
import EventSource
Xcode Package Dependency
From Xcode menu: File > Swift Packages > Add Package Dependency
https://github.com/Recouse/EventSource

Swift Package Manager
In your Package.swift file, first add the following to the package dependencies:
.package(url:"https://github.com/Recouse/EventSource.git"),
And then, include "EventSource" as a dependency for your target:
.target(name:"<target>", dependencies:[.product(name:"EventSource",package:"EventSource"),]),
Usage
Using EventSource is easy. Simply create a new data task from an instance of EventSource with the URLRequest of the SSE endpoint you want to connect to, and await for events:
import EventSource
lettask=Task{leteventSource=EventSource()letdataTask= eventSource.dataTask(for: urlRequest)forawaiteventin dataTask.events(){switch event {case.open:print("Connection was opened.")case.error(let error):print("Received an error:", error.localizedDescription)case.event(let event):print("Received an event", event.data ??"")case.closed:print("Connection was closed.")}}}
Use task.cancel() to explicitly close the connection. However, in that case .closed event won't be emitted.
Data-only mode
EventSource can be used in data-only mode, making it suitable for popular APIs like OpenAI. Below is an example using OpenAI's completions API:
Task{varurlRequest=URLRequest(url:URL(string:"https://api.openai.com/v1/chat/completions")!)
urlRequest.allHTTPHeaderFields =["Content-Type":"application/json","Authorization":"Bearer \(accessToken)"]
urlRequest.httpMethod ="POST"
urlRequest.httpBody =""" {"model": "gpt-4o-mini","messages": [ {"role": "user", "content": "Why is the sky blue?"} ],"stream": true }""".data(using:.utf8)!
leteventSource=EventSource(mode:.dataOnly)letdataTask= eventSource.dataTask(for: urlRequest)varresponse:String=""forawaiteventin dataTask.events(){switch event {case.event(let event):iflet data = eventDevent.data?.data(using:.utf8){letchunk=try?JSONDecoder().decode(ChatCompletionChunk.self, from: data)letstring= chunk?.choices.first?.delta.content ??""
response += string
}default:break}}print(response)}
Compatibility
  • macOS 10.15+
  • iOS 13.0+
  • tvOS 13.0+
  • watchOS 6.0+
  • visionOS 1.0+
Dependencies
No dependencies.
Contributing
Contributions to are always welcomed! For more details see CONTRIBUTING.md.
Credits
License
EventSource is released under the MIT License. See LICENSE for more information.
About
Server-sent events in Swift
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
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document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
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EventSource
CI
EventSource is a Swift package that provides a simple implementation of a client for Server-Sent Events (SSE). It allows you to easily receive real-time updates from a server over a persistent HTTP connection, using a simple and efficient interface.
It also leverages Swift concurrency features to provide a more expressive and intuitive way to handle asynchronous operations.
Note
Please note that this package was originally developed to be used in conjunction with another package, and as such, it may not cover all specification details. Please be aware of this limitation when evaluating whether EventSource is suitable for your specific use case.
Features
  •  Simple Swift API for SSE
  •  Supports data-only mode
  •  Data race safety with Swift 6
Installation
The module name of the package is EventSource. Choose one of the instructions below to install and add the following import statement to your source code.
import EventSource
Xcode Package Dependency
From Xcode menu: File > Swift Packages > Add Package Dependency
https://github.com/Recouse/EventSource

Swift Package Manager
In your Package.swift file, first add the following to the package dependencies:
.package(url:"https://github.com/Recouse/EventSource.git"),
And then, include "EventSource" as a dependency for your target:
.target(name:"<target>", dependencies:[.product(name:"EventSource",package:"EventSource"),]),
Usage
Using EventSource is easy. Simply create a new data task from an instance of EventSource with the URLRequest of the SSE endpoint you want to connect to, and await for events:
import EventSource
lettask=Task{leteventSource=EventSource()letdataTask= eventSource.dataTask(for: urlRequest)forawaiteventin dataTask.events(){switch event {case.open:print("Connection was opened.")case.error(let error):print("Received an error:", error.localizedDescription)case.event(let event):print("Received an event", event.data ??"")case.closed:print("Connection was closed.")}}}
Use task.cancel() to explicitly close the connection. However, in that case .closed event won't be emitted.
Data-only mode
EventSource can be used in data-only mode, making it suitable for popular APIs like OpenAI. Below is an example using OpenAI's completions API:
Task{varurlRequest=URLRequest(url:URL(string:"https://api.openai.com/v1/chat/completions")!)
urlRequest.allHTTPHeaderFields =["Content-Type":"application/json","Authorization":"Bearer \(accessToken)"]
urlRequest.httpMethod ="POST"
urlRequest.httpBody =""" {"model": "gpt-4o-mini","messages": [ {"role": "user", "content": "Why is the sky blue?"} ],"stream": true }""".data(using:.utf8)!
leteventSource=EventSource(mode:.dataOnly)letdataTask= eventSource.dataTask(for: urlRequest)varresponse:String=""forawaiteventin dataTask.events(){switch event {case.event(let event):iflet data = eventDevent.data?.data(using:.utf8){letchunk=try?JSONDecoder().decode(ChatCompletionChunk.self, from: data)letstring= chunk?.choices.first?.delta.content ??""
response += string
}default:break}}print(response)}
Compatibility
  • macOS 10.15+
  • iOS 13.0+
  • tvOS 13.0+
  • watchOS 6.0+
  • visionOS 1.0+
Dependencies
No dependencies.
Contributing
Contributions to are always welcomed! For more details see CONTRIBUTING.md.
Credits
License
EventSource is released under the MIT License. See LICENSE for more information.
About
Server-sent events in Swift
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

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

Skip to content
BranchesTags
Repository files navigation
EventSource
CI
EventSource is a Swift package that provides a simple implementation of a client for Server-Sent Events (SSE). It allows you to easily receive real-time updates from a server over a persistent HTTP connection, using a simple and efficient interface.
It also leverages Swift concurrency features to provide a more expressive and intuitive way to handle asynchronous operations.
Note
Please note that this package was originally developed to be used in conjunction with another package, and as such, it may not cover all specification details. Please be aware of this limitation when evaluating whether EventSource is suitable for your specific use case.
Features
  •  Simple Swift API for SSE
  •  Supports data-only mode
  •  Data race safety with Swift 6
Installation
The module name of the package is EventSource. Choose one of the instructions below to install and add the following import statement to your source code.
import EventSource
Xcode Package Dependency
From Xcode menu: File > Swift Packages > Add Package Dependency
https://github.com/Recouse/EventSource

Swift Package Manager
In your Package.swift file, first add the following to the package dependencies:
.package(url:"https://github.com/Recouse/EventSource.git"),
And then, include "EventSource" as a dependency for your target:
.target(name:"<target>", dependencies:[.product(name:"EventSource",package:"EventSource"),]),
Usage
Using EventSource is easy. Simply create a new data task from an instance of EventSource with the URLRequest of the SSE endpoint you want to connect to, and await for events:
import EventSource
lettask=Task{leteventSource=EventSource()letdataTask= eventSource.dataTask(for: urlRequest)forawaiteventin dataTask.events(){switch event {case.open:print("Connection was opened.")case.error(let error):print("Received an error:", error.localizedDescription)case.event(let event):print("Received an event", event.data ??"")case.closed:print("Connection was closed.")}}}
Use task.cancel() to explicitly close the connection. However, in that case .closed event won't be emitted.
Data-only mode
EventSource can be used in data-only mode, making it suitable for popular APIs like OpenAI. Below is an example using OpenAI's completions API:
Task{varurlRequest=URLRequest(url:URL(string:"https://api.openai.com/v1/chat/completions")!)
urlRequest.allHTTPHeaderFields =["Content-Type":"application/json","Authorization":"Bearer \(accessToken)"]
urlRequest.httpMethod ="POST"
urlRequest.httpBody =""" {"model": "gpt-4o-mini","messages": [ {"role": "user", "content": "Why is the sky blue?"} ],"stream": true }""".data(using:.utf8)!
leteventSource=EventSource(mode:.dataOnly)letdataTask= eventSource.dataTask(for: urlRequest)varresponse:String=""forawaiteventin dataTask.events(){switch event {case.event(let event):iflet data = eventDevent.data?.data(using:.utf8){letchunk=try?JSONDecoder().decode(ChatCompletionChunk.self, from: data)letstring= chunk?.choices.first?.delta.content ??""
response += string
}default:break}}print(response)}
Compatibility
  • macOS 10.15+
  • iOS 13.0+
  • tvOS 13.0+
  • watchOS 6.0+
  • visionOS 1.0+
Dependencies
No dependencies.
Contributing
Contributions to are always welcomed! For more details see CONTRIBUTING.md.
Credits
License
EventSource is released under the MIT License. See LICENSE for more information.
About
Server-sent events in Swift
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} 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
BranchesTags
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EventSource
CI
EventSource is a Swift package that provides a simple implementation of a client for Server-Sent Events (SSE). It allows you to easily receive real-time updates from a server over a persistent HTTP connection, using a simple and efficient interface.
It also leverages Swift concurrency features to provide a more expressive and intuitive way to handle asynchronous operations.
Note
Please note that this package was originally developed to be used in conjunction with another package, and as such, it may not cover all specification details. Please be aware of this limitation when evaluating whether EventSource is suitable for your specific use case.
Features
  •  Simple Swift API for SSE
  •  Supports data-only mode
  •  Data race safety with Swift 6
Installation
The module name of the package is EventSource. Choose one of the instructions below to install and add the following import statement to your source code.
import EventSource
Xcode Package Dependency
From Xcode menu: File > Swift Packages > Add Package Dependency
https://github.com/Recouse/EventSource

Swift Package Manager
In your Package.swift file, first add the following to the package dependencies:
.package(url:"https://github.com/Recouse/EventSource.git"),
And then, include "EventSource" as a dependency for your target:
.target(name:"<target>", dependencies:[.product(name:"EventSource",package:"EventSource"),]),
Usage
Using EventSource is easy. Simply create a new data task from an instance of EventSource with the URLRequest of the SSE endpoint you want to connect to, and await for events:
import EventSource
lettask=Task{leteventSource=EventSource()letdataTask= eventSource.dataTask(for: urlRequest)forawaiteventin dataTask.events(){switch event {case.open:print("Connection was opened.")case.error(let error):print("Received an error:", error.localizedDescription)case.event(let event):print("Received an event", event.data ??"")case.closed:print("Connection was closed.")}}}
Use task.cancel() to explicitly close the connection. However, in that case .closed event won't be emitted.
Data-only mode
EventSource can be used in data-only mode, making it suitable for popular APIs like OpenAI. Below is an example using OpenAI's completions API:
Task{varurlRequest=URLRequest(url:URL(string:"https://api.openai.com/v1/chat/completions")!)
urlRequest.allHTTPHeaderFields =["Content-Type":"application/json","Authorization":"Bearer \(accessToken)"]
urlRequest.httpMethod ="POST"
urlRequest.httpBody =""" {"model": "gpt-4o-mini","messages": [ {"role": "user", "content": "Why is the sky blue?"} ],"stream": true }""".data(using:.utf8)!
leteventSource=EventSource(mode:.dataOnly)letdataTask= eventSource.dataTask(for: urlRequest)varresponse:String=""forawaiteventin dataTask.events(){switch event {case.event(let event):iflet data = eventDevent.data?.data(using:.utf8){letchunk=try?JSONDecoder().decode(ChatCompletionChunk.self, from: data)letstring= chunk?.choices.first?.delta.content ??""
response += string
}default:break}}print(response)}
Compatibility
  • macOS 10.15+
  • iOS 13.0+
  • tvOS 13.0+
  • watchOS 6.0+
  • visionOS 1.0+
Dependencies
No dependencies.
Contributing
Contributions to are always welcomed! For more details see CONTRIBUTING.md.
Credits
License
EventSource is released under the MIT License. See LICENSE for more information.
About
Server-sent events in Swift
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

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

Skip to content
BranchesTags
Repository files navigation
EventSource
CI
EventSource is a Swift package that provides a simple implementation of a client for Server-Sent Events (SSE). It allows you to easily receive real-time updates from a server over a persistent HTTP connection, using a simple and efficient interface.
It also leverages Swift concurrency features to provide a more expressive and intuitive way to handle asynchronous operations.
Note
Please note that this package was originally developed to be used in conjunction with another package, and as such, it may not cover all specification details. Please be aware of this limitation when evaluating whether EventSource is suitable for your specific use case.
Features
  •  Simple Swift API for SSE
  •  Supports data-only mode
  •  Data race safety with Swift 6
Installation
The module name of the package is EventSource. Choose one of the instructions below to install and add the following import statement to your source code.
import EventSource
Xcode Package Dependency
From Xcode menu: File > Swift Packages > Add Package Dependency
https://github.com/Recouse/EventSource

Swift Package Manager
In your Package.swift file, first add the following to the package dependencies:
.package(url:"https://github.com/Recouse/EventSource.git"),
And then, include "EventSource" as a dependency for your target:
.target(name:"<target>", dependencies:[.product(name:"EventSource",package:"EventSource"),]),
Usage
Using EventSource is easy. Simply create a new data task from an instance of EventSource with the URLRequest of the SSE endpoint you want to connect to, and await for events:
import EventSource
lettask=Task{leteventSource=EventSource()letdataTask= eventSource.dataTask(for: urlRequest)forawaiteventin dataTask.events(){switch event {case.open:print("Connection was opened.")case.error(let error):print("Received an error:", error.localizedDescription)case.event(let event):print("Received an event", event.data ??"")case.closed:print("Connection was closed.")}}}
Use task.cancel() to explicitly close the connection. However, in that case .closed event won't be emitted.
Data-only mode
EventSource can be used in data-only mode, making it suitable for popular APIs like OpenAI. Below is an example using OpenAI's completions API:
Task{varurlRequest=URLRequest(url:URL(string:"https://api.openai.com/v1/chat/completions")!)
urlRequest.allHTTPHeaderFields =["Content-Type":"application/json","Authorization":"Bearer \(accessToken)"]
urlRequest.httpMethod ="POST"
urlRequest.httpBody =""" {"model": "gpt-4o-mini","messages": [ {"role": "user", "content": "Why is the sky blue?"} ],"stream": true }""".data(using:.utf8)!
leteventSource=EventSource(mode:.dataOnly)letdataTask= eventSource.dataTask(for: urlRequest)varresponse:String=""forawaiteventin dataTask.events(){switch event {case.event(let event):iflet data = eventDevent.data?.data(using:.utf8){letchunk=try?JSONDecoder().decode(ChatCompletionChunk.self, from: data)letstring= chunk?.choices.first?.delta.content ??""
response += string
}default:break}}print(response)}
Compatibility
  • macOS 10.15+
  • iOS 13.0+
  • tvOS 13.0+
  • watchOS 6.0+
  • visionOS 1.0+
Dependencies
No dependencies.
Contributing
Contributions to are always welcomed! For more details see CONTRIBUTING.md.
Credits
License
EventSource is released under the MIT License. See LICENSE for more information.
About
Server-sent events in Swift
Resources
Readme
License
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Code of conduct
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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EventSource
CI
EventSource is a Swift package that provides a simple implementation of a client for Server-Sent Events (SSE). It allows you to easily receive real-time updates from a server over a persistent HTTP connection, using a simple and efficient interface.
It also leverages Swift concurrency features to provide a more expressive and intuitive way to handle asynchronous operations.
Note
Please note that this package was originally developed to be used in conjunction with another package, and as such, it may not cover all specification details. Please be aware of this limitation when evaluating whether EventSource is suitable for your specific use case.
Features
  •  Simple Swift API for SSE
  •  Supports data-only mode
  •  Data race safety with Swift 6
Installation
The module name of the package is EventSource. Choose one of the instructions below to install and add the following import statement to your source code.
import EventSource
Xcode Package Dependency
From Xcode menu: File > Swift Packages > Add Package Dependency
https://github.com/Recouse/EventSource

Swift Package Manager
In your Package.swift file, first add the following to the package dependencies:
.package(url:"https://github.com/Recouse/EventSource.git"),
And then, include "EventSource" as a dependency for your target:
.target(name:"<target>", dependencies:[.product(name:"EventSource",package:"EventSource"),]),
Usage
Using EventSource is easy. Simply create a new data task from an instance of EventSource with the URLRequest of the SSE endpoint you want to connect to, and await for events:
import EventSource
lettask=Task{leteventSource=EventSource()letdataTask= eventSource.dataTask(for: urlRequest)forawaiteventin dataTask.events(){switch event {case.open:print("Connection was opened.")case.error(let error):print("Received an error:", error.localizedDescription)case.event(let event):print("Received an event", event.data ??"")case.closed:print("Connection was closed.")}}}
Use task.cancel() to explicitly close the connection. However, in that case .closed event won't be emitted.
Data-only mode
EventSource can be used in data-only mode, making it suitable for popular APIs like OpenAI. Below is an example using OpenAI's completions API:
Task{varurlRequest=URLRequest(url:URL(string:"https://api.openai.com/v1/chat/completions")!)
urlRequest.allHTTPHeaderFields =["Content-Type":"application/json","Authorization":"Bearer \(accessToken)"]
urlRequest.httpMethod ="POST"
urlRequest.httpBody =""" {"model": "gpt-4o-mini","messages": [ {"role": "user", "content": "Why is the sky blue?"} ],"stream": true }""".data(using:.utf8)!
leteventSource=EventSource(mode:.dataOnly)letdataTask= eventSource.dataTask(for: urlRequest)varresponse:String=""forawaiteventin dataTask.events(){switch event {case.event(let event):iflet data = eventDevent.data?.data(using:.utf8){letchunk=try?JSONDecoder().decode(ChatCompletionChunk.self, from: data)letstring= chunk?.choices.first?.delta.content ??""
response += string
}default:break}}print(response)}
Compatibility
  • macOS 10.15+
  • iOS 13.0+
  • tvOS 13.0+
  • watchOS 6.0+
  • visionOS 1.0+
Dependencies
No dependencies.
Contributing
Contributions to are always welcomed! For more details see CONTRIBUTING.md.
Credits
License
EventSource is released under the MIT License. See LICENSE for more information.
About
Server-sent events in Swift
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

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

Skip to content
BranchesTags
Repository files navigation
EventSource
CI
EventSource is a Swift package that provides a simple implementation of a client for Server-Sent Events (SSE). It allows you to easily receive real-time updates from a server over a persistent HTTP connection, using a simple and efficient interface.
It also leverages Swift concurrency features to provide a more expressive and intuitive way to handle asynchronous operations.
Note
Please note that this package was originally developed to be used in conjunction with another package, and as such, it may not cover all specification details. Please be aware of this limitation when evaluating whether EventSource is suitable for your specific use case.
Features
  •  Simple Swift API for SSE
  •  Supports data-only mode
  •  Data race safety with Swift 6
Installation
The module name of the package is EventSource. Choose one of the instructions below to install and add the following import statement to your source code.
import EventSource
Xcode Package Dependency
From Xcode menu: File > Swift Packages > Add Package Dependency
https://github.com/Recouse/EventSource

Swift Package Manager
In your Package.swift file, first add the following to the package dependencies:
.package(url:"https://github.com/Recouse/EventSource.git"),
And then, include "EventSource" as a dependency for your target:
.target(name:"<target>", dependencies:[.product(name:"EventSource",package:"EventSource"),]),
Usage
Using EventSource is easy. Simply create a new data task from an instance of EventSource with the URLRequest of the SSE endpoint you want to connect to, and await for events:
import EventSource
lettask=Task{leteventSource=EventSource()letdataTask= eventSource.dataTask(for: urlRequest)forawaiteventin dataTask.events(){switch event {case.open:print("Connection was opened.")case.error(let error):print("Received an error:", error.localizedDescription)case.event(let event):print("Received an event", event.data ??"")case.closed:print("Connection was closed.")}}}
Use task.cancel() to explicitly close the connection. However, in that case .closed event won't be emitted.
Data-only mode
EventSource can be used in data-only mode, making it suitable for popular APIs like OpenAI. Below is an example using OpenAI's completions API:
Task{varurlRequest=URLRequest(url:URL(string:"https://api.openai.com/v1/chat/completions")!)
urlRequest.allHTTPHeaderFields =["Content-Type":"application/json","Authorization":"Bearer \(accessToken)"]
urlRequest.httpMethod ="POST"
urlRequest.httpBody =""" {"model": "gpt-4o-mini","messages": [ {"role": "user", "content": "Why is the sky blue?"} ],"stream": true }""".data(using:.utf8)!
leteventSource=EventSource(mode:.dataOnly)letdataTask= eventSource.dataTask(for: urlRequest)varresponse:String=""forawaiteventin dataTask.events(){switch event {case.event(let event):iflet data = eventDevent.data?.data(using:.utf8){letchunk=try?JSONDecoder().decode(ChatCompletionChunk.self, from: data)letstring= chunk?.choices.first?.delta.content ??""
response += string
}default:break}}print(response)}
Compatibility
  • macOS 10.15+
  • iOS 13.0+
  • tvOS 13.0+
  • watchOS 6.0+
  • visionOS 1.0+
Dependencies
No dependencies.
Contributing
Contributions to are always welcomed! For more details see CONTRIBUTING.md.
Credits
License
EventSource is released under the MIT License. See LICENSE for more information.
About
Server-sent events in Swift
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages