HTTP Requests & Responses

Requests

• GET: Retrieves the resource identified by the request URL
• HEAD: Returns the headers identified by the request URL
• POST: Sends data of unlimited length to the Web server
• PUT: Stores a resource under the request URL
• DELETE: Removes the resource identified by the request URL
• OPTIONS: Returns the HTTP methods the server supports
• TRACE: Returns the header fields sent with the TRACE request

Responses

• 404: The requested resource is not available
• 401: The request requires HTTP authentication
• 500: An error occurred inside the HTTP server preventing it from fulfilling the request
• 503: The HTTP server is temporarily overloaded and unable to handle the request

http://java.sun.com/j2ee/1.4/docs/tutorial/doc/HTTP.html