Microsoft KB Archive/184317

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Running IIS and NetShow Server with HTTP Streaming Enabled

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Q184317

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The information in this article applies to:


 * Microsoft Windows NT Server NetShow 3.0 Services

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IMPORTANT: This article contains information about editing the registry. Before you edit the registry, make sure you understand how to restore it if a problem occurs. For information about how to do this, view the "Restoring the Registry" Help topic in Regedit.exe or the "Restoring a Registry Key" Help topic in Regedt32.exe.

SUMMARY
In order to run both Internet Information Server (IIS) 4.0 and NetShow Services with HTTP streaming enabled, the following is required:

When you use Microsoft NetShow Services to stream multimedia content using HTTP, neither IIS 3.0 nor any other service that binds to port 80 on all available IP addresses can be running on the same Windows NT Server computer. IIS 3.0 binds to port 80 on all available IP addresses. IIS 4.0, however, allows the user to specify which IP addresses are used for serving HTTP content. The following procedure can be used to run both IIS 4.0 and NetShow with HTTP streaming enabled on the same Windows NT Server computer.

MORE INFORMATION
The following are required to run both Internet Information Server (IIS) and NetShow Services with HTTP streaming enabled on the same server:

- A minimum of two IP addresses bound to the network interface card.

- Microsoft Internet Information Server 4.0. The steps listed below will not work with Microsoft Internet Information Server 3.0 or earlier.

- The IP address being used for the IIS server and the IP address being used for the NetShow server should each have its own unique DNS "A" records.

- No Web site running under IIS 4.0 should be configured to use All Unassigned IP addresses.

First you must ensure that no Web site running under IIS is binding to all unassigned IP addresses. This may be accomplished by performing the following procedure:


 * 1) Open the Microsoft Management Console.
 * 2) Right-click Default Web server to display the properties for the default Web server, and select the Web Site tab.
 * 3) In the IP Address drop-down list, specify the IP address that should be used for your IIS computer.
 * 4) Repeat steps 2 and 3 for any additional Web sites you are running under IIS 4.0, including the Administration Web site.

Next you must enable HTTP streaming on your NetShow server. The following procedure outlines this process for NetShow 3.0 Services:


 * 1) Open the NetShow Administrator.
 * 2) Click on Server properties. The Configure Server Properties dialog box will appear.
 * 3) Select the HTTP Streaming and Distribution tab.
 * 4) Select the "Enable HTTP streaming for NetShow Unicast service" option, and click Apply. You should see a dialog box indicating that you must restart the server before the changes take effect. Click OK and proceed with the next set of steps without restarting.

Next you must edit the registry and make the NetShow Unicast Service dependent on the World Wide Web Publishing Service. The following procedure outlines how to make the needed changes to the registry.

WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.

For information about how to edit the registry, view the "Changing Keys And Values" Help topic in Registry Editor (Regedit.exe) or the "Add and Delete Information in the Registry" and "Edit Registry Data" Help topics in Regedt32.exe. Note that you should back up the registry before you edit it. If you are running Windows NT, you should also update your Emergency Repair Disk (ERD).


 * 1) Click Start, and select Run. In the Run dialog box, type "regedt32" (without the quotation marks), and click OK.
 * 2) Locate the following key in the registry:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\nsunicast
 * 1) Double-click the DependOnService value. This opens the Multi String editor.
 * 2) Add W3SVC to the list of services that the Unicast service depends on.
 * 3) Restart the Windows NT Server computer.

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