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Protocols SOAP and REST APIs

SOAP is a simple web service communication protocol that stands for Simple Object Access Protocol. SOAP protocol was developed by Microsoft back in 1998. It’s now used to transmit information over HTTPS/HTTP. The SOAP is more reliable than other protocols. Developers popularly use this protocol for creating web APIs.

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REST is also a web communication protocol that stands for Representational State Transfer. REST guidelines allow users to implement the data according to their requirements. To develop a REST API, users have to use some architectural constraints such as uniform interface, client-server separation, statelessness, cacheable resources, layered system and code on demand. REST is based on a client/server procedure which divides front and back ends of the APIs.

Benefits of SOAP Protocol over REST

Both SOAP and REST APIs provide exceptional support to the developers. First, let’s see some benefits of SOAP over REST. The SOAP provides robust security support. It provides greater assurance for data integrity and privacy. Built-in retry logic is an added advantage that will compensate for some failed interactions or communications.

Benefits of REST protocol over SOAP

REST API protocol has more benefits than SOAP. Let’s take a look at them. REST protocol allows a greater variance of data options but SOAP only goes with XML. It shows the supreme performance when it’s caching for information. REST is now using by some popular brands such as eBay, Amazon, Google and Yahoo. It only uses less bandwidth but works faster than SOAP. It has many message formats such as HTML, JSON, plain text, YAML, XML and more. The SOAP protocol is recommended for payment gateways, enterprise apps, financial services, telecommunication services and more. REST protocol is recommended for mobile services, social networks, and other web services. SOAP supports HTTP, UDP, SMTP and others but REST supports only HTTP.

SOAP

REST

Works only with XML

Works with many formats HTML, XML, JSON, plain texts and more

High-quality Security

Secured but not too high

Access more bandwidth and low scalability

Access lesser bandwidth and highly scalable

Best for enterprise and telecommunication apps

Best for mobile services and web services applications

Built for remote procedure calls

REST is fully based on Resources

JSON

Both SOAP and REST formats are developed to connect web applications and utilize HTTP protocols and valuable commands such as POST, DELETE, GET, and more. JSON is a specific file format that used for transferring information or data in web applications. It’s not bigger than XML. JSON allows user to send data between all the mobile apps, browsers and web servers. It’s an easy design so anybody can understand it clearly.

JSON Request type:

{“menu”: {
  “id”: “file”,
  “value”: “File”,
  “popup”: {
    “menuitem”: [
      {“value”: “New”, “onclick”: “CreateNewDoc()”},
      {“value”: “Open”, “onclick”: “OpenDoc()”},
      {“value”: “Close”, “onclick”: “CloseDoc()”}
    ]
  }
}}

The same text expressed as XML:

<menu id=”file” value=”File”>
  <popup>
    <menuitem value=”New” onclick=”CreateNewDoc()” />
    <menuitem value=”Open” onclick=”OpenDoc()” />
    <menuitem value=”Close” onclick=”CloseDoc()” />
  </popup>
</menu>

XML Request Type:

<?xml version=”1.0″?>

<SOAP-ENV:Envelope

xmlns:SOAP-ENV

=”http://www.QrsSolution.org/2006/15/soap-envelope”

SOAP-ENV:encodingStyle

=”http://www.QrsSolution.org/2006/15/soap-encoding”>

<soap:Body>

 <Demo.QrsWebService

 xmlns=”http://QrsWebService.com/”>  <EmployeeName>String</EmployeeName>

   </Demo.QrsWebService>

 </soap:Body>

</SOAP-ENV:Envelope>

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