RESTful Java Web Services - Third Edition

HTTP status codes

For every HTTP request, the server returns a status code indicating the processing status of the request. In this section, we will see some of the frequently used HTTP status codes. A basic understanding of status codes will definitely help us later while designing RESTful web services:

• 1xx Informational: This series of status codes indicates informational content. This means that the request is received and processing is going on. Here are the frequently used informational status codes:
  • 100 Continue: This code indicates that the server has received the request header and the client can now send the body content. In this case, the client first makes a request (with the Expect: 100-continue header) to check whether it can ...