HTTP Interface for Cell Broadcast Service - Introduction

HTTP Overview

HTTP is the client/server based protocol used to deliver virtually all files and data on the World Wide Web. If you'd like a more detailed description of HTTP protocol, refer to Internet RFCs `HTTP/1.0 - RFC 1945' and `HTTP/1.1 - RFC 2616', which can be downloaded from http://www.rfc-editor.org/rfc.html.

When you use HTTP in a web browser, you enter the "address" for the web page you wish to view. These addresses can be generalized into the following format:

In this example, the web browser is the HTTP client and it uses the information in this address to open a connection to an HTTP server and send a request.

• "http://" is the protocol specifier, telling the browser what protocol to use for the request.
• <ip_address> is the IP address of the server.
• <port> is the port number on which to communicate with the server. The default port for HTTP is 80.
• <request_URL> provides information to the server on the location of the resource that's being requested and can also be used to provide information to the resource.

HTTP for Cell Broadcast Messages

The test set acts as a server for cell broadcast messages. If you have a PC and your test set connected to a network or directly connected together, you can open a web browser (client) and send a request to the test set using the test set's IP address and a correctly configured request URL. For example, Once the sets set is configured to allow the use of the HTTP interface and cell broadcast service is enabled in the test set, you might send the following from the web browser if your test set's IP address was 111.111.111.112.