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Leopard Reference Library: Internet & Web
Internet and web capabilities in Mac OS X include support for the major web-related protocols and services. Developers can use these capabilities in conjunction with tools such as WebObjects and AppleScript to quickly develop and deploy robust, dynamic Internet and web applications, services, and content.

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Configuring and Running X11 Applications on Mac OS X (HTML)
Learn to set up and use X11 applications on your Mac OS X system.
Articles 2005-01-17
Mac OS X Server Security Configuration Guide (PDF)
Describes how to configure Mac OS X Server to enhance server and service security.
Guides 2008-06-09
URL Loading System (HTML) (PDF)
Explains how to manipulate URLs and transfer URL contents.
Guides 2008-05-06
URL Access Manager Reference (HTML) (PDF)
Deprecated - Describes the legacy C API for transferring data to and from a URL from within an application. Replaced by CFNetwork.
Reference 2006-07-13
PortMapper (HTML) (DMG) (ZIP)
Demonstrates Bonjour's NAT port-mapping API, and provides a higher-level Objective-C interface to it.
Sample Code 2008-07-25
URL CacheInfo (HTML) (DMG) (ZIP)
Demonstrates resource caching behavior using the Cocoa URL loading system.
Sample Code 2008-06-05
JavaFrameEmbedding example (HTML) (DMG) (ZIP)
Small Cocoa application that demonstrates how to use JavaFrameEmbedding.framework
Sample Code 2007-06-12
NewsReader (HTML) (DMG) (ZIP)
Demonstrates use of the Publication Subscription framework to create a simple RSS reader application.
Sample Code 2007-06-01
AutoUpdater (HTML) (DMG) (ZIP)
This sample demonstrates Cocoa networking using the NSURL loading classes, NSURLConnection and NSURLDownload.
Sample Code 2005-06-01
MoreIsBetter (HTML) (DMG) (ZIP)
Library providing indispensable wrapers and workarounds for many areas of Mac OS programming.
Sample Code 2003-10-27
SimplePing (HTML) (DMG) (ZIP)
Sample provides simple API to programatically ping a remote host without admin privileges
Sample Code 2003-10-27
LocalServer (HTML) (DMG) (ZIP)
Deprecated - Sample demonstrates how a Classic process can communicate with a Mac OS X process using IP networking protocols.
Sample Code 2003-01-30
GetSetOptions (HTML) (DMG) (ZIP)
Demonstrates a variety of uses of Open Transport's option management routines.
Sample Code 2003-01-14
NameAndAddress (HTML) (DMG) (ZIP)
A single window utility that gets a host name from an IP address or an IP address from a hostname.
Sample Code 2003-01-14
NoCopyReceives (HTML) (DMG) (ZIP)
Demonstrates using no-copy receives under Open Transport.
Sample Code 2003-01-14
Getting a Packet Trace (HTML) (日本語 HTML)
QA1176: Lists tools available for looking at the network packets on the wire.
Technical Q&As 2008-06-03
Internet Connect Speed (HTML) (日本語 HTML)
QA1165: Describes how to get the modem connection speed from the System Configuration framework dynamic store.
Technical Q&As 2003-03-26
Accessing HTTPS Proxy Settings (HTML) (日本語 HTML)
QA1234: Describes how to programatically access Secure Web Proxy information.
Technical Q&As 2003-02-19
The "chosen" node in the device tree (HTML)
HW88: Describes how to find the "chosen" node in the Open firmware device tree.
Technical Q&As 2000-09-05
Launching the Default Internet Browser (HTML) (日本語 HTML)
NW60: Shows with sample code how to invoke a user's default browser to open a specific URL.
Technical Q&As 1999-10-11
TCP/IP Option Sizes (HTML) (日本語 HTML)
NW62: Enumerates the TCP/IP options and their sizes for Open Transport.
Technical Q&As 1999-04-26
OTScheduleDeferredTask When Task Running (HTML) (日本語 HTML)
NW52: Describes what happens when you use OTScheduleDefferedTask to schedule a task that is running.
Technical Q&As 1997-10-13
Changing the TCP Window Size (HTML)
NW47: Describes how to change the TCP window size in Open Transport.
Technical Q&As 1997-03-14
T_DATA_REQ vs M_DATA TPI Message Blocks (HTML) (日本語 HTML)
NW42: Explains why OT passes data to a TPI module using M_DATA message blocks instead of M_PROTO+T_DATA_REQ.
Technical Q&As 1996-10-25