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HttpClient

HttpClients are used to communicate with web services outside of the database. There are many different ways to interface with HttpClients. These articles are used to to show you how to create HttpClients and how they can be used to extend database solutions.

  • IS.HTTPCLIENT - D3 9.1 and above

    D3 9.1 and above includes support for both normal sockets and SSL sockets. This provide this version of D3 the ability to access both Http:// and Https:// without requiring an external OS routine.

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  • IS.HTTPCLIENT - Using CURL and BASIC's EXECUTE

    CURL is an open source tools and can be found on every version of Linux being distributed. CURL can be find as compiled binaries as well as compliable source code. Many software applications integrate CURL using the libcurl, but in this case we will be using the curl command line routine using the command-line switches, standard-in, and standard-out to transmit information between MultiValue BASIC and CURL.

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  • IS.HTTPCLIENT - Using Universe and UniData HttpCall Extensions

    Universe and Unidata have built in UniBASIC extensions that make the job of calling to a HTTP web server relatively easy. If you look into the UniVerse and/or UniData BASIC extension manual, you will see references to the CallHTTP functions that were added. These functions isolate a lot of the complexity of writing the HTTP protocols by hand, but they still require you to do some work. The subroutine included with this article removes that set of complexity by creating a single subroutine that you can call.

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  • IS.HTTPCLIENT - Using UniVerse and UniData UniBASIC Sockets

    UniVerse and UniData includes support for both normal sockets and SSL sockets, in addition to the CallHTTP extension. The UniVerse and UniData CallHTTP UniBASIC extensions do what most developers needed when making SOAP or REST calls, but they do not support custom Authorization Headers. In order to work around this issue, a developer is requires to create the HTTP protocol manually.

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