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Saturday, June 20, 2015

Simple Soap envelope parser and generator

So I figured as a followup to my previous post here is a small sample project of what I would love to find when searching for a person online that is looking for a job.

This library on GitHub is just one class to help you generate and parse a SOAP envelope, something I was surprised to see wasn't actually available in the .Net framework as a stand alone class (Or at least I haven't found it).

Its use is very simple. To create a SOAP envelope you create an instance of the class SoapEnvelope and assign the Headers and `Body` properties (And possible the Exception if you want to signal an error) and then call the ToDocument method to generate the XML document for the SOAP envelope.

To read data simply call the method SoapEnvelop.FromStream or SoapEnvelope.FromRequest and it will return the envelope it parsed from the stream or request. It does support handling GZip content encoding from the request.

Here is a simple round trip example of its use (For more examples check out the tests).

      SoapEnvelope envelope = new SoapEnvelope();
      envelope.Body = new[] { new XElement("BodyElement") };
      envelope.Headers = new[] { new XElement("HeaderElement") };
      XDocument doc = envelope.ToDocument();
      MemoryStream stream = new MemoryStream();
      doc.Save(stream);
      stream.Seek(0, SeekOrigin.Begin);
      SoapEnvelope otherEnvelope = SoapEnvelope.FromStream(stream);

To continue from the previous post from a few days ago. Even though this example is very short it does show a couple of things if I were to evaluate the author of something similar for a job.

  • This is somebody who actually likes to code because otherwise why would he (Or she) even have taken the time to do this.
  • This is somebody that cares about the quality of their code because even though this is a super simple class it contains a small test suite to make sure that it works.
  • This person has at least a decent grasp of the C# and .Net framework and understand how to use inheritance and interfaces to create something new (If you are a coder and doesn't know, it is scary how few people who should know this stuff, do actually know it).

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