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https://github.com/macshome/The-Wisdom-of-Quinn
Last synced: 13 days ago
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Share and Enjoy®
Host: GitHub
URL: https://github.com/macshome/The-Wisdom-of-Quinn
Owner: macshome
License: other
Created: 2021-03-03T14:15:07.000Z (over 3 years ago)
Default Branch: main
Last Pushed: 2023-10-17T17:36:26.000Z (about 1 year ago)
Last Synced: 2024-08-01T19:58:18.715Z (3 months ago)
Size: 22.2 MB
Stars: 573
Watchers: 50
Forks: 22
Open Issues: 0
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE.md
- Code of conduct: CODE_OF_CONDUCT.md
Awesome Lists containing this project

README

        # The Wisdom of Quinn

Informative DevForum posts from everyone's favorite DTS member. Share and Enjoy®

The quick way to see updates is to follow the bouncing balls.

* New Posts 🟢

* Updated Posts 🟡

* Deprecated Posts 🔴

While the New and Updated flags will change with each update, the Deprecated flag is forever. Luckily for us, deprecated posts have been replaced by official documentation.

For a comprehensive list of updates, see the [CHANGELOG](CHANGELOG.md)

## Resource Pages

Lists and links of Apple resources that The Eskimo finds useful.

- [App Sandbox Resources](https://developer.apple.com/forums/thread/707325) | ([PDF](pdfs/App-Sandbox-Resources.pdf)) 🟡

- [Background Tasks Resources](https://developer.apple.com/forums/thread/707503) | ([PDF](pdfs/Background-Tasks-Resources.pdf))

- [Code Signing Resources](https://developer.apple.com/forums/thread/707080) | ([PDF](pdfs/Code-Signing-Resources.pdf)) 🟡

- [Debugging Resources](https://developer.apple.com/forums/thread/707324) | ([PDF](pdfs/Debugging-Resources.pdf)) 

- [Files and Storage Resources](https://developer.apple.com/forums/thread/712981) | ([PDF](pdfs/Files-and-Storage-Resources.pdf)) 🟡

- [Network Extension Resources](https://developer.apple.com/forums/thread/707294) | ([PDF](pdfs/Network-Extension-Resources.pdf)) 🟡

- [Networking Resources](https://developer.apple.com/forums/thread/707320) | ([PDF](pdfs/Networking-Resources.pdf)) 🟡

- [Networking Resources (Old)](https://developer.apple.com/forums/thread/1001) | ([PDF](pdfs/Networking-Resources.pdf))

- [Notarisation Resources](https://developer.apple.com/forums/thread/707377) | ([PDF](pdfs/Notarisation-Resources.pdf))

- [Security Resources](https://developer.apple.com/forums/thread/1002) | ([PDF](pdfs/Security-Resources.pdf)) 

- [Service Management Resources](https://developer.apple.com/forums/thread/708685) | ([PDF](pdfs/TabularData-Resources.pdf))

- [TabularData Resources](https://developer.apple.com/forums/thread/726723) | ([PDF](pdfs/Trusted-Execution-Resources.pdf))

- [Trusted Execution Resources](https://developer.apple.com/forums/thread/707357) | ([PDF](pdfs/Trusted-Execution-Resources.pdf)) 🟡

- [XPC Resources](https://developer.apple.com/forums/thread/708877) | ([PDF](pdfs/XPC-Resources.pdf)) 🟡

## Code Signing

Everybody loves code signing!

- [A Peek Behind the Code Signing Curtain](https://developer.apple.com/forums/thread/702351) | ([PDF](pdfs/A-Peek-Behind-the-Code-Signing-Curtain.pdf))

- [Certificate Signing Requests Explained](https://developer.apple.com/forums/thread/699268) | ([PDF](pdfs/Certificate-Signing-Requests-Explained.pdf))

- [Creating Distribution-Signed Code for Mac](https://developer.apple.com/forums/thread/712005) | ([PDF](pdfs/Creating-Distribution-Signed-Code-for-Mac.pdf))

- [`--deep` Considered Harmful](https://developer.apple.com/forums/thread/129980) | ([PDF](pdfs/`--deep`-Considered-Harmful.pdf))

- [Fixing an untrusted code signing certificate](https://developer.apple.com/forums/thread/712043) | ([PDF](pdfs/Fixing-an-untrusted-code-signing-certificate.pdf))

- [Isolating Code Signing Problems from Build Problems](https://developer.apple.com/forums/thread/725876) | ([PDF](pdfs/Isolating-Code-Signing-Problems-from-Build-Problems.pdf)) 

- [KEXT Code Signing Problems](https://developer.apple.com/forums/thread/52353) | ([PDF](pdfs/KEXT-Code-Signing-Problems-v2.pdf))

- [Manual Code Signing Example](https://developer.apple.com/forums/thread/130855) | ([PDF](pdfs/Manual-Code-Signing-Example.pdf))

- [Resolving Code Signing Crashes on Launch](https://developer.apple.com/forums/thread/706427) | ([PDF](pdfs/Resolving-Code-Signing-Crashes-on-Launch.pdf))

- [Resolving errSecInternalComponent errors during code signing](https://developer.apple.com/forums/thread/712005) | ([PDF](pdfs/Resolving-errSecInternalComponent-errors-during-code-signing.pdf))

- [Signing a Mac Product For Distribution](https://developer.apple.com/forums/thread/128166) | ([PDF](pdfs/Signing-a-Mac-Product-For-Distribution-v2.pdf)) 

- [Signing code for older versions of macOS on Apple Silicon](https://developer.apple.com/forums/thread/673323) | ([PDF](pdfs/Signing-code-for-older-versions-of-macOS-on-Apple-Silicon.pdf))

## Distribution

App Store, Provisioning Profiles, Developer ID, and Notarization.

- [App Translocation Notes](https://developer.apple.com/forums/thread/724969) | ([PDF](pdfs/App-Translocation-Notes.pdf))

- [Background items showing up with the wrong name](https://developer.apple.com/forums/thread/732805) | ([PDF](pdfs/Background-items-showing-up-with-the-wrong-name.pdf)) 

- [Don’t Run App Store Distribution-Signed Code](https://developer.apple.com/forums/thread/707043) | ([PDF](pdfs/Don’t-Run-App-Store-Distribution-Signed-Code.pdf))

- [Embedding a Command-Line Tool in a Sandboxed App](https://developer.apple.com/forums/thread/680212) | ([PDF](pdfs/Embedding-a-Command-Line-Tool-in-a-Sandboxed-App-v2.pdf)) 🔴

- [Error 1048 When Notarising](https://developer.apple.com/forums/thread/126901) | ([PDF](pdfs/Error-1048-When-Notarising.pdf))

- [Exporting a Developer ID Network Extension](https://developer.apple.com/forums/thread/737894) | ([PDF](pdfs/Exporting-a-Developer-ID-Network-Extension.pdf)) 🟢

- [Finding a Capability’s Distribution Restrictions](https://developer.apple.com/forums/thread/721563) | ([PDF](pdfs/Finding-a-Capabilitys-Distribution-Restrictions.pdf))

- [Identifying a Cloud Managed Signing Certificate](https://developer.apple.com/forums/thread/732544) | ([PDF](pdfs/Identifying-a-Cloud-Managed-Signing-Certificate.pdf)) 

- [Notarisation Fundamentals](https://developer.apple.com/forums/thread/710738) | ([PDF](pdfs/Notarisation-Fundamentals.pdf))

- [Notarisation and the macOS 10.9 SDK](https://developer.apple.com/forums/thread/659964) | ([PDF](pdfs/Notarisation-and-the-macOS-10.9-SDK-v2.pdf))

- [Notarising an Installer Package Containing a KEXT](https://developer.apple.com/forums/thread/116692) | ([PDF](pdfs/Notarising-an-Installer-Package-Containing-a-KEXT.pdf))

- [Packaging a Daemon with a Provisioning Profile](https://developer.apple.com/forums/thread/129596) | ([PDF](pdfs/Packaging-a-Daemon-with-a-Provisioning-Profile-v2.pdf)) 🔴

- [Packaging Mac Software for Distribution](https://developer.apple.com/forums/thread/701581) | ([PDF](pdfs/Packaging-Mac-Software-for-Distribution.pdf))

- [TestFlight, Provisioning Profiles, and the Mac App Store](https://developer.apple.com/forums/thread/733942) | ([PDF](pdfs/TestFlight,-Provisioning-Profiles,-and-the-Mac-App-Store.pdf)) 🟡

- [The Care and Feeding of Developer ID](https://developer.apple.com/forums/thread/732320) | ([PDF](pdfs/The-Care-and-Feeding-of-Developer-ID.pdf)) 🟡

- [The Pros and Cons of Stapling](https://developer.apple.com/forums/thread/720093) | ([PDF](pdfs/The-Pros-and-Cons-of-Stapling.pdf))

- [Resolving Gatekeeper Problems](https://developer.apple.com/forums/thread/706379) | ([PDF](pdfs/Resolving-Gatekeeper-Problems.pdf)) 

- [Resolving Gatekeeper Problems Caused by Dangling Load Command Paths](https://developer.apple.com/forums/thread/706414) | ([PDF](pdfs/Resolving-Gatekeeper-Problems-Caused-by-Dangling-Load-Command-Paths.pdf))

- [Sandboxed Helper Tool Crashing in `libsystem_secinit`](https://developer.apple.com/forums/thread/112800) | ([PDF](pdfs/Sandboxed-Helper-Tool-Crashing-in-`libsystem_secinit`.pdf)) 

- [Testing a Notarised Product](https://developer.apple.com/forums/thread/130560) | ([PDF](pdfs/Testing-a-Notarised-Product.pdf))

- [What exactly is a provisioning profile?](https://developer.apple.com/forums/thread/685723) | ([PDF](pdfs/What-exactly-is-a-provisioning-profile.pdf)) 🔴

## Filesystems

Bits on disk.

- [Create a Zip Archive With This One Weird Trick](https://developer.apple.com/forums/thread/681770?answerId=677841022#677841022) | ([PDF](pdfs/System-API-for-generating-ZIP-compatible-archive.pdf))

- [Extended Attributes and Zip Archive](https://developer.apple.com/forums/thread/690457) | ([PDF](pdfs/Extended-Attributes-and-Zip-Archive.pdf))

- [On File System Permissions](https://developer.apple.com/forums/thread/678819) | ([PDF](pdfs/On-File-System-Permissions.pdf)) 🟡

- [Unpacking Apple Archives](https://developer.apple.com/forums/thread/133985) | ([PDF](pdfs/Unpacking-Apple-Archives.pdf))

- [Whither FileHandle?](https://developer.apple.com/forums/thread/690382) | ([PDF](pdfs/Whither-FileHandle.pdf))

## iOS Background Activities

Y U KILL MAH PROCESS?

- [iOS Background Execution Limits](https://developer.apple.com/forums/thread/685525) | ([PDF](pdfs/iOS-Background-Execution-Limits.pdf))

- [Testing Background Session Code](https://developer.apple.com/forums/thread/14855) | ([PDF](pdfs/Testing-Background-Session-Code.pdf))

- [UIApplication Background Task Notes](https://developer.apple.com/forums/thread/85066) | ([PDF](pdfs/UIApplication-Background-Task-Notes.pdf))

## Security

Shhh… it's a secret.

- [App Groups: macOS vs iOS: Fight!](https://developer.apple.com/forums/thread/721701) | ([PDF](pdfs/App-Groups-macOS-vs-iOS-Fight.pdf)) 

- [BSD Privilege Escalation on macOS](https://developer.apple.com/forums/thread/708765) | ([PDF](pdfs/BSD-Privilege-Escalation-on-macOS.pdf))

- [Calling Security Framework from Swift](https://developer.apple.com/forums/thread/710961) | ([PDF](pdfs/Calling-Security-Framework-from-Swift.pdf))

- [Data Vault Info](https://developer.apple.com/forums/thread/114452?answerId=352695022#352695022) | ([PDF](pdfs/Data-Vault-Info.pdf))

- [Defining An App Group Shared Between macOS and iOS](https://developer.apple.com/forums/thread/718126?answerId=733072022#733072022) | ([PDF](pdfs/defining-an-app-group-shared-between-macOS-and-iOS.pdf))

- [Error -34018 errSecMissingEntitlement](https://developer.apple.com/forums/thread/64699) | ([PDF](pdfs/Error--34018-errSecMissingEntitlement.pdf))

- [Importing Cryptographic Keys](https://developer.apple.com/forums/thread/680572) | ([PDF](pdfs/Importing-Cryptographic-Keys.pdf))

- [Intermittent -34018 errors from users in the field](https://developer.apple.com/forums/thread/64700) | ([PDF](pdfs/Intermittent--34018-errors-from-users-in-the-field.pdf))

- [On Cryptographic Key Formats](https://developer.apple.com/forums/thread/680554) | ([PDF](pdfs/On-Cryptographic-Key-Formats.pdf))

- [Remote Debugging for Authorization Plugins](https://developer.apple.com/forums/thread/93410?answerId=733129022#733129022) | ([PDF](pdfs/Remote-Debugging-for-Authorization-Plugins.pdf))

- [Resolving App Sandbox Inheritance Problems](https://developer.apple.com/forums/thread/706390) | ([PDF](pdfs/Resolving-App-Sandbox-Inheritance-Problems.pdf))

- [Resolving Hardened Runtime Incompatibilities](https://developer.apple.com/forums/thread/707743) | ([PDF](pdfs/Resolving-Hardened-Runtime-Incompatibilities.pdf))

### Keychains

- [App ID Prefix Change and Keychain Access](https://developer.apple.com/forums/thread/706128) | ([PDF](pdfs/App-ID-Prefix-Change-and-Keychain-Access.pdf))

- [Keychain sharing](https://developer.apple.com/forums/thread/67047?answerId=193828022#193828022) | ([PDF](pdfs/Confusion-about-access-groups.pdf))

- [On Mac Keychains](https://developer.apple.com/forums/thread/696431) | ([PDF](pdfs/On-Mac-Keychains.pdf)) 🔴

- [SecItem attributes for keys](https://developer.apple.com/forums/thread/70959) | ([PDF](pdfs/SecItem-attributes-for-keys.pdf))

- [SecItem: Fundamentals](https://developer.apple.com/forums/thread/724023) | ([PDF](pdfs/SecItem-Fundamentals.pdf)) 🟡

- [SecItem: Pitfalls and Best Practices](https://developer.apple.com/forums/thread/724013) | ([PDF](pdfs/SecItem-Pitfalls-and-Best-Practices.pdf))  🟡

- [Troubleshooting -34018 Keychain Errors](https://developer.apple.com/forums/thread/114456) | ([PDF](pdfs/Troubleshooting--34018-Keychain-Errors-v2.pdf))

## Logging

Tell me about what happened.

- [Implementing Your Own Crash Reporter](https://developer.apple.com/forums/thread/113742) | ([PDF](pdfs/Implementing-Your-Own-Crash-Reporter.pdf))

- [Fetching the Notary Log](https://developer.apple.com/forums/thread/705839) | ([PDF](pdfs/Fetching-the-Notary-Log.pdf))

- [On Log Noise](https://developer.apple.com/forums/thread/115461) | ([PDF](pdfs/On-Log-Noise.pdf))

- [Parsing Dates Without Times](https://developer.apple.com/forums/thread/655000) | ([PDF](pdfs/Parsing-Dates-Without-Times.pdf))

- [Recording Private Data in the System Log](https://developer.apple.com/forums/thread/705810) | ([PDF](pdfs/Recording-Private-Data-in-the-System-Log.pdf))

- [Unified Logging from the Kernel](https://developer.apple.com/forums/thread/91424) | ([PDF](pdfs/Unified-Logging-from-the-Kernel.pdf))

- [Using a Sysdiagnose Log to Debug a Hard-to-Reproduce Problem](https://developer.apple.com/forums/thread/739560) | ([PDF](pdfs/[Using-a-Sysdiagnose-Log-to-Debug-a-Hard-to-Reproduce-Problem.pdf) 🟢

- [Viewing Sandbox Violation Reports](https://developer.apple.com/forums/thread/702735) | ([PDF](pdfs/Viewing-Sandbox-Violation-Reports.pdf)) 🔴

- [Your Friend the System Log](https://developer.apple.com/forums/thread/705868) | ([PDF](pdfs/Your-Friend-the-System-Log.pdf)) 🟡

## Low-Level Fiddly Bits

Get down in the guts.

- [Availability of Low-Level APIs](https://developer.apple.com/forums/thread/735632) | ([PDF](pdfs/Availability-of-Low-Level-APIs.pdf)) 🟢

- [Avoid Dispatch Global Concurrent Queues](https://developer.apple.com/forums/thread/711736) | ([PDF](pdfs/Avoid-Dispatch-Global-Concurrent-Queues.pdf))

- [Running a Child Process with Standard Input and Output](https://developer.apple.com/forums/thread/690310) | ([PDF](pdfs/Running-a-Child-Process-with-Standard-Input-and-Output.pdf))

- [Swift 3 and BSD Sockets](https://developer.apple.com/forums/thread/60797) | ([PDF](pdfs/Swift-3-and-BSD-Sockets.pdf))

- [WWDC 2010 Session 207 Run Loops Section](https://developer.apple.com/forums/thread/717392) | ([PDF](pdfs/WWDC-2010-Session-207-Run-Loops-Section.pdf))

### Debugging

- [Accessing Global Variables on Apple Silicon](https://developer.apple.com/forums/thread/731756) | ([PDF](pdfs/Accessing-Global-Variables-on-Apple-Silicon.pdf)) 

- [Language Exception from RCTFatal](https://developer.apple.com/forums/thread/723952) | ([PDF](pdfs/Accessing-Global-Variables-on-Apple-Silicon.pdf))

- [Using a Link Map to Track Down a Symbol’s Origin](https://developer.apple.com/forums/thread/733475) | [PDF](pdfs/Using-a-Link-Map-to-Track-Down-a-Symbol’s-Origin.pdf)

### Libraries and Frameworks

- [An Apple Library Primer](https://developer.apple.com/forums/thread/715385) | ([PDF](pdfs/An-Apple-Library-Primer.pdf)) 🟡

- [Async Signal Safe Functions vs Dyld Lazy Binding](https://developer.apple.com/forums/thread/116571) | ([PDF](pdfs/Async-Signal-Safe-Functions-vs-Dyld-Lazy-Binding.pdf))

- [Dynamic Library Full Path Alternative](https://developer.apple.com/forums/thread/736737) | ([PDF](pdfs/Dynamic-Library-Full-Path-Alternative.pdf)) 🟢

- [Dynamic Library Identification](https://developer.apple.com/forums/thread/736719) | ([PDF](pdfs/Dynamic-Library-Identification.pdf)) 🟢

- [Dynamic Library Standard Setup for Apps](https://developer.apple.com/forums/thread/736728) | ([PDF](pdfs/Dynamic-Library-Standard-Setup-for-Apps.pdf)) 🟢

- [Resolving Library Loading Problems](https://developer.apple.com/forums/thread/706437) | ([PDF](pdfs/Resolving-Library-Loading-Problems.pdf)) 

### Memory

- [Handling `shouldFreeInfo` Parameters](https://developer.apple.com/forums/thread/122336) | ([PDF](pdfs/Handling-`shouldFreeInfo`-Parameters.pdf))

- [Objective-C Memory Management for Swift Programmers](https://developer.apple.com/forums/thread/716261) | ([PDF](pdfs/Objective-C-Memory-Management-for-Swift-Programmers.pdf)) 

- [On Free Memory](https://developer.apple.com/forums/thread/118867) | ([PDF](pdfs/On-Free-Memory.pdf)) 

- [Standard Memory Debugging Tools](https://developer.apple.com/forums/thread/92102) | ([PDF](pdfs/Standard-Memory-Debugging-Tools.pdf)) 

- [The Peril of the Ampersand](https://developer.apple.com/forums/thread/674633) | ([PDF](pdfs/The-Peril-of-the-Ampersand.pdf))

### XPC

- [Testing and Debugging XPC Code With an Anonymous Listener](https://developer.apple.com/forums/thread/693955) | ([PDF](pdfs/Testing-and-Debugging-XPC-Code-With-an-Anonymous-Listener.pdf))

- [XPC and App-to-App Communication](https://developer.apple.com/forums/thread/715338) | ([PDF](pdfs/XPC-and-App-to-App-Communication.pdf))

## Networking

Making this talk to that.

### BSD Sockets

- [Calling BSD Sockets from Swift](https://developer.apple.com/forums/thread/734124) | ([PDF](pdfs/Calling-BSD-Sockets-from-Swift.pdf))

	-	[QSocket: Addresses](https://developer.apple.com/forums/thread/734144) | ([PDF](pdfs/QSocket-Addresses.pdf))

	-	[QSocket: DNS](https://developer.apple.com/forums/thread/734158) | ([PDF](pdfs/QSocket-DNS.pdf))

	-	[QSocket: Interfaces](https://developer.apple.com/forums/thread/734120) | ([PDF](pdfs/QSocket-Interfaces.pdf))

	-	[QSocket: System Additions](https://developer.apple.com/forums/thread/734139) | ([PDF](pdfs/QSocket-System-Additions.pdf))

	- 	[QSocket: I/O](https://developer.apple.com/forums/thread/734125) | ([PDF](pdfs/QSocket-I-O.pdf))

	- [QSocket: Socket Options](https://developer.apple.com/forums/thread/734140) | ([PDF](pdfs/QSocket-Socket-Options.pdf))

### Non-Standard Networking

- [Extra-ordinary Networking](https://developer.apple.com/forums/thread/734348) | ([PDF](pdfs/Extra-ordinary-Networking.pdf)) 🟡

	- [The iOS Wi-Fi Lifecycle](https://developer.apple.com/forums/thread/734361) | ([PDF](pdfs/The-iOS-WiFi-Lifecycle.pdf]) 🟡

	- [Network Interface Concepts](https://developer.apple.com/forums/thread/734293) | ([PDF](pdfs/Network-Interface-Concepts.pdf))

	- [Network Interface Techniques](https://developer.apple.com/forums/thread/734359) | ([PDF](pdfs/Network-Interface-Techniques.pdf))

	- [Network Interface APIs](https://developer.apple.com/forums/thread/734338) | ([PDF](pdfs/Network-Interface-APIs.pdf))

	- [Running an HTTP Request over WWAN](https://developer.apple.com/forums/thread/734343) | ([PDF](pdfs/Running-an-HTTP-Request-over-WWAN.pdf))

	- [Showing Connection Information in an iOS Server](https://developer.apple.com/forums/thread/734294) | ([PDF](pdfs/Showing-Connection-Information-in-an-iOS-Server.pdf))

	- [Don’t Try to Get the Device’s IP Address](https://developer.apple.com/forums/thread/734295) | ([PDF](pdfs/Dont-Try-to-Get-the-Devices-IP-Address.pdf))

	- [Working with a Wi-Fi Accessory](https://developer.apple.com/forums/thread/734344) | ([PDF](pdfs/Working-with-a-WiFi-Accessory.pdf)) 🟡

### Debugging

- [Debugging a Network Extension Provider](https://developer.apple.com/forums/thread/725805) | ([PDF](pdfs/Debugging-a-Network-Extension-Provider.pdf))

- [Debugging HTTP Proxies and Certificate Transparency](https://developer.apple.com/forums/thread/735275) | ([PDF](pdfs/Debugging-HTTP-Proxies-and-Certificate-Transparency.pdf)) 🟢

- [Debugging HTTP Server-Side Errors](https://developer.apple.com/forums/thread/38886) | ([PDF](pdfs/Debugging-HTTP-Server-Side-Errors.pdf))

- [Investigating Network Latency Problems](https://developer.apple.com/forums/thread/45210) | ([PDF](pdfs/Investigating-Network-Latency-Problems.pdf)) 

- [Network Debugging articles](https://developer.apple.com/forums/thread/113581) | ([PDF](pdfs/Network-Debugging-articles.pdf))

- [Network Debugging in the Field](https://developer.apple.com/forums/thread/66541) | ([PDF](pdfs/Network-Debugging-in-the-Field.pdf))

- [Using mitmproxy to Analyse HTTP[S] Requests](https://developer.apple.com/forums/thread/54541) | ([PDF](pdfs/Using-mitmproxy-to-Analyse-HTTP[S]-Requests.pdf))

### Extensions

- [A Peek Behind the NECP Curtain](https://developer.apple.com/forums/thread/725715) | ([PDF](pdfs/A-Peek-Behind-the-NECP-Curtain.pdf))

- [NEHotspotHelper pseudo API](https://developer.apple.com/forums/thread/46929) | ([PDF](pdfs/NEHotspotHelper-pseudo-API.pdf))

- [Network Extension and VPN Glossary](https://developer.apple.com/forums/thread/739490) | ([PDF](pdfs/Network-Extension-and-VPN-Glossary.pdf)) 🟢

- [Network Extension Framework Entitlements](https://developer.apple.com/forums/thread/67613) | ([PDF](pdfs/Network-Extension-Framework-Entitlements.pdf))

- [Network Extension Provider Memory Strategy](https://developer.apple.com/forums/thread/44942) | ([PDF](pdfs/Network-Extension-Provider-Memory-Strategy.pdf))

- [Networking in a Short-Lived Extension](https://developer.apple.com/forums/thread/76659) | ([PDF](pdfs/Networking-in-a-Short-Lived-Extension.pdf)) 🟡

### General

- [Five Reasons Why Synchronous Networking Is Bad](https://developer.apple.com/forums/thread/662329) | ([PDF](pdfs/Five-Reasons-Why-Synchronous-Networking-Is-Bad.pdf))

- [iOS Network Signal Strength](https://developer.apple.com/forums/thread/721067) | ([PDF](pdfs/iOS-Network-Signal-Strength.pdf))

- [Maintaining a TCP Connection in the Background](https://developer.apple.com/forums/thread/97824) | ([PDF](pdfs/Maintaining-a-TCP-Connection-in-the-Background.pdf))

- [Moving to Fewer, Larger Transfers](https://developer.apple.com/forums/thread/14853) | ([PDF](pdfs/Moving-to-Fewer,-Larger-Transfers-v2.pdf)) 🟡

- [NSURLCache and Byte Ranges](https://developer.apple.com/forums/thread/92119) | ([PDF](pdfs/NSURLCache-and-Byte-Ranges.pdf))

- [On FTP](https://developer.apple.com/forums/thread/97469) | ([PDF](pdfs/On-FTP.pdf))

- [Using the Multicast Networking Additional Capability](https://developer.apple.com/forums/thread/663271) | ([PDF](pdfs/Using-the-Multicast-Networking-Additional-Capability-v2.pdf)) 🔴

- [Wi-Fi Fundamentals](https://developer.apple.com/forums/thread/45283) | ([PDF](pdfs/Wi-Fi-Fundamentals.pdf))

### IPv6

- [IPv6 and App Review](https://developer.apple.com/forums/thread/49979) | ([PDF](pdfs/IPv6-and-App-Review.pdf))

- [IPv6 Address Synthesis on Older Systems](https://developer.apple.com/forums/thread/47220) | ([PDF](pdfs/IPv6-Address-Synthesis-on-Older-Systems.pdf))

- [Supporting IPv6-only Networks](https://developer.apple.com/forums/thread/46545) | ([PDF](pdfs/Supporting-IPv6-only-Networks.pdf))

### Local Network

- [Getting Started with Bonjour](https://developer.apple.com/forums/thread/735862) | ([PDF](pdfs/Getting-Started-with-Bonjour.pdf)) 🟢

- [Triggering the Local Network Privacy Alert](https://developer.apple.com/forums/thread/663768) | ([PDF](pdfs/Triggering-the-Local-Network-Privacy-Alert.pdf))

- [Local Network Privacy FAQ](https://developer.apple.com/forums/thread/663858) | ([PDF](pdfs/Local-Network-Privacy-FAQ.pdf)) 🟡

	- [FAQ-1: What is a local network?](https://developer.apple.com/forums/thread/663848) | ([PDF](pdfs/FAQ-1.pdf))

	- [FAQ-2: What operations require local network access?](https://developer.apple.com/forums/thread/663874) | ([PDF](pdfs/FAQ-2.pdf)) 

	- [FAQ-3: What operations require the multicast entitlement?](https://developer.apple.com/forums/thread/663875) | ([PDF](pdfs/FAQ-3.pdf))

	- [FAQ-4: Do I need the multicast entitlement?](https://developer.apple.com/forums/thread/663906) | ([PDF](pdfs/FAQ-4.pdf))

	- [FAQ-5: I’ve been granted the multicast entitlement; how do I enable it?](https://developer.apple.com/forums/thread/663911) | ([PDF](pdfs/FAQ-5.pdf))

	- [FAQ-6: Can App Clips access the local network?](https://developer.apple.com/forums/thread/663892) | ([PDF](pdfs/FAQ-6.pdf))

	- [FAQ-7: How does local network privacy work with app extensions?](https://developer.apple.com/forums/thread/663813) | ([PDF](pdfs/FAQ-7.pdf))

	- [FAQ-8: How do I explicitly trigger the local network privacy alert?](https://developer.apple.com/forums/thread/663888) | ([PDF](pdfs/FAQ-8.pdf))

	- [FAQ-9: How do I tell whether I’ve been granted local network access?](https://developer.apple.com/forums/thread/663852) | ([PDF](pdfs/FAQ-9.pdf))

	- [FAQ-10: How do I use the unsatisfied reason property?](https://developer.apple.com/forums/thread/663769) | ([PDF](pdfs/FAQ-10.pdf))

	- [FAQ-11: Do I need a local network usage description property?](https://developer.apple.com/forums/thread/663775) | ([PDF](pdfs/FAQ-11.pdf)) 

	- [FAQ-12: Can I test on the simulator?](https://developer.apple.com/forums/thread/663828) | ([PDF](pdfs/FAQ-12.pdf))

	- [FAQ-13: Once my app has displayed the local network privacy alert, how can I reset its state so that it shows again?](https://developer.apple.com/forums/thread/663839) | ([PDF](pdfs/FAQ-13.pdf))

	- [FAQ-14: How do I map my Multipeer Connectivity service type to an entry in the Bonjour services property?](https://developer.apple.com/forums/thread/663814) | ([PDF](pdfs/FAQ-14.pdf))

	- [FAQ-15: My app presents the local network privacy alert unexpectedly. Is there a way to track down the cause?](https://developer.apple.com/forums/thread/664116) | ([PDF](pdfs/FAQ-15.pdf))

	- [FAQ-16: On a small fraction of devices my app fails to present the local network privacy alert. What’s going on?](https://developer.apple.com/forums/thread/736533) | ([PDF](pdfs/FAQ-16.pdf)) 🟢

	- [FAQ-17: Why does local network privacy get confused when I install two variants of my app?](https://developer.apple.com/forums/thread/737416) | ([PDF](pdfs/FAQ-17.pdf)) 🟢

### Security

- [App Transport Security](https://developer.apple.com/forums/thread/6767) | ([PDF](pdfs/App-Transport-Security.pdf))

- [Customising TLS Server Trust Evaluation Considered Harmful](https://developer.apple.com/forums/thread/100113) | ([PDF](pdfs/Customising-TLS-Server-Trust-Evaluation-Considered-Harmful.pdf))

- [Implementing Secure Transport I/O Functions](https://developer.apple.com/forums/thread/75169) | ([PDF](pdfs/Implementing-Secure-Transport-I/O-Functions.pdf))- [TLS for App Developers](https://developer.apple.com/forums/thread/67493) | ([PDF](pdfs/TLS-for-App-Developers.pdf)) 

- [TLS For Accessory Developers](https://developer.apple.com/forums/thread/703234) | ([PDF](pdfs/TLS-For-Accessory-Developers.pdf))

## Odds and Ends

General info and some puzzles.

- [Bug Reporting: How and Why?](https://developer.apple.com/forums/thread/712889) | ([PDF](pdfs/Bug-Reporting-How-and-Why.pdf))

- [Investigating Third-Party IDE Integration Problems](https://developer.apple.com/forums/thread/734833) | ([PDF](Investigating-Third-Party-IDE-Integration-Problems.pdf)) 🟢

- [KWN & ESK’s Puzzle Page: Mutation Madness](https://developer.apple.com/forums/thread/128559) | ([PDF](pdfs/KWN-&-ESK’s-Puzzle-Page/-Mutation-Madness.pdf))

- [Posting a Crash Report](https://developer.apple.com/forums/thread/688669) | ([PDF](pdfs/Posting-a-Crash-Report.pdf))

- [What is an exception?](https://developer.apple.com/forums/thread/680584) | ([PDF](pdfs/What-is-an-exception.pdf))

- [Quinn’s Top Ten DevForums Tips](https://developer.apple.com/forums/thread/706527) | ([PDF](pdfs/Quinn’s-Top-Ten-DevForums-Tips.pdf))

### Disclaimer

All of this content is subject to the [license](https://developer.apple.com/terms/apple-developer-forums/Apple-Developer-Forums-Participation-Agreement-20200618.pdf) of the [Apple Developer Forums](https://developer.apple.com/forums/). I make no claims to any of it. This page provides PDF files as an archival format, but the live links to the articles are the preferred access method.