Can HTTP response have empty body?

1. Any response message which “MUST NOT” include a message-body (such as the 1xx, 204, and 304 responses and any response to a HEAD request) is always terminated by the first empty line after the header fields, regardless of the entity-header fields present in the message.

What is the format of HTTP response?

After receiving and interpreting a request message, a server responds with an HTTP response message: A Status-line. Zero or more header (General|Response|Entity) fields followed by CRLF. An empty line (i.e., a line with nothing preceding the CRLF) indicating the end of the header fields.

What are the three parts of an HTTP response?

An HTTP response is also divided into three parts: Status line, header and body.

What are the components of HTTP response?

HTTP Response broadly has 3 main components:

  • Status Line.
  • Headers.
  • Body (Optional)

Is HTTP response always JSON?

No, the response text for a POST request is totally up to the web service. A good REST API will always respond with JSON, but you will not always get that.

How do you send an empty response entity?

Returning an empty ResponseEntity in Spring MVC

  1. @GetMapping(“/”)
  2. public ResponseEntity> getAll() {
  3. return new ResponseEntity<>(myService. getAll(), HttpStatus. CREATED);
  4. }

What is HTTP response header?

A response header is an HTTP header that can be used in an HTTP response and that doesn’t relate to the content of the message. Response headers, like Age , Location or Server are used to give a more detailed context of the response.

What is HTTP structure?

HTTP request consists of 4 fundamental elements: A request line, zero or more header (General|Request|Entity) fields followed by CRLF, and a space preceding the CRLF (indicating the end of the header fields) and optionally a message body.

What is header in HTTP response?

HTTP headers let the client and the server pass additional information with an HTTP request or response. An HTTP header consists of its case-insensitive name followed by a colon ( : ), then by its value. Whitespace before the value is ignored.

How many types of HTTP responses are there?

Responses are grouped in five classes: Informational responses ( 100 – 199 ) Successful responses ( 200 – 299 ) Redirection messages ( 300 – 399 )