HttpURLConnection

HTTP Status-Code 202: Accepted.

HTTP Status-Code 502: Bad Gateway.

HTTP Status-Code 405: Method Not Allowed.

HTTP Status-Code 400: Bad Request.

HTTP Status-Code 408: Request Time-Out.

HTTP Status-Code 409: Conflict.

HTTP Status-Code 201: Created.

HTTP Status-Code 413: Request Entity Too Large.

HTTP Status-Code 403: Forbidden.

HTTP Status-Code 504: Gateway Timeout.

HTTP Status-Code 410: Gone.

HTTP Status-Code 500: Internal Server Error.

HTTP Status-Code 411: Length Required.

HTTP Status-Code 301: Moved Permanently.

HTTP Status-Code 302: Temporary Redirect.

HTTP Status-Code 300: Multiple Choices.

HTTP Status-Code 406: Not Acceptable.

HTTP Status-Code 203: Non-Authoritative Information.

HTTP Status-Code 404: Not Found.

HTTP Status-Code 501: Not Implemented.

HTTP Status-Code 304: Not Modified.

HTTP Status-Code 204: No Content.

HTTP Status-Code 200: OK.

HTTP Status-Code 206: Partial Content.

HTTP Status-Code 402: Payment Required.

HTTP Status-Code 412: Precondition Failed.

HTTP Status-Code 407: Proxy Authentication Required.

HTTP Status-Code 414: Request-URI Too Large.

HTTP Status-Code 205: Reset Content.

HTTP Status-Code 303: See Other.

HTTP Status-Code 500: Internal Server Error.

HTTP Status-Code 401: Unauthorized.

HTTP Status-Code 503: Service Unavailable.

HTTP Status-Code 415: Unsupported Media Type.

HTTP Status-Code 305: Use Proxy.

HTTP Status-Code 505: HTTP Version Not Supported.

The chunk-length when using chunked encoding streaming mode for output. A value of -1 means chunked encoding is disabled for output.

The fixed content-length when using fixed-length streaming mode. A value of -1 means fixed-length streaming mode is disabled for output.

If true, the protocol will automatically follow redirects. If false, the protocol will not automatically follow redirects.

This field is set by the setInstanceFollowRedirects method. Its value is returned by the getInstanceFollowRedirects method.

Its default value is based on the value of the static followRedirects at HttpURLConnection construction time.

The HTTP method (GET,POST,PUT,etc.).

An int representing the three digit HTTP Status-Code.

• 1xx: Informational
• 2xx: Success
• 3xx: Redirection
• 4xx: Client Error
• 5xx: Server Error

The HTTP response message.

Constructor for the HttpURLConnection.

Indicates that other requests to the server are unlikely in the near future. Calling disconnect() should not imply that this HttpURLConnection instance can be reused for other requests.

Returns the error stream if the connection failed but the server sent useful data nonetheless. The typical example is when an HTTP server responds with a 404, which will cause a FileNotFoundException to be thrown in connect, but the server sent an HTML help page with suggestions as to what to do.

This method will not cause a connection to be initiated. If the connection was not connected, or if the server did not have an error while connecting or if the server had an error but no error data was sent, this method will return null. This is the default.

Returns a boolean indicating whether or not HTTP redirects (3xx) should be automatically followed.

Returns the value for the n^th header field. Some implementations may treat the 0^th header field as special, i.e. as the status line returned by the HTTP server.

This method can be used in conjunction with the getHeaderFieldKey method to iterate through all the headers in the message.

Returns the value of the named field parsed as date. The result is the number of milliseconds since January 1, 1970 GMT represented by the named field.

This form of getHeaderField exists because some connection types (e.g., http-ng) have pre-parsed headers. Classes for that connection type can override this method and short-circuit the parsing.

Returns the key for the n^th header field. Some implementations may treat the 0^th header field as special, i.e. as the status line returned by the HTTP server. In this case, getHeaderField(0) returns the status line, but getHeaderFieldKey(0) returns null.

Returns the value of this HttpURLConnection's instanceFollowRedirects field.

Returns a permission object representing the permission necessary to make the connection represented by this object. This method returns null if no permission is required to make the connection. By default, this method returns java.security.AllPermission. Subclasses should override this method and return the permission that best represents the permission required to make a a connection to the URL. For example, a URLConnection representing a file: URL would return a java.io.FilePermission object.

The permission returned may dependent upon the state of the connection. For example, the permission before connecting may be different from that after connecting. For example, an HTTP sever, say foo.com, may redirect the connection to a different host, say bar.com. Before connecting the permission returned by the connection will represent the permission needed to connect to foo.com, while the permission returned after connecting will be to bar.com.

Permissions are generally used for two purposes: to protect caches of objects obtained through URLConnections, and to check the right of a recipient to learn about a particular URL. In the first case, the permission should be obtained after the object has been obtained. For example, in an HTTP connection, this will represent the permission to connect to the host from which the data was ultimately fetched. In the second case, the permission should be obtained and tested before connecting.

Get the request method.

Gets the status code from an HTTP response message. For example, in the case of the following status lines:

 HTTP/1.0 200 OK
 HTTP/1.0 401 Unauthorized
 

Gets the HTTP response message, if any, returned along with the response code from a server. From responses like:

 HTTP/1.0 200 OK
 HTTP/1.0 404 Not Found
 

This method is used to enable streaming of a HTTP request body without internal buffering, when the content length is not known in advance. In this mode, chunked transfer encoding is used to send the request body. Note, not all HTTP servers support this mode.

When output streaming is enabled, authentication and redirection cannot be handled automatically. A HttpRetryException will be thrown when reading the response if authentication or redirection are required. This exception can be queried for the details of the error.

This method must be called before the URLConnection is connected.

This method is used to enable streaming of a HTTP request body without internal buffering, when the content length is known in advance.

An exception will be thrown if the application attempts to write more data than the indicated content-length, or if the application closes the OutputStream before writing the indicated amount.

When output streaming is enabled, authentication and redirection cannot be handled automatically. A HttpRetryException will be thrown when reading the response if authentication or redirection are required. This exception can be queried for the details of the error.

This method must be called before the URLConnection is connected.

Sets whether HTTP redirects (requests with response code 3xx) should be automatically followed by this class. True by default. Applets cannot change this variable.

If there is a security manager, this method first calls the security manager's checkSetFactory method to ensure the operation is allowed. This could result in a SecurityException.

Sets whether HTTP redirects (requests with response code 3xx) should be automatically followed by this HttpURLConnection instance.

The default value comes from followRedirects, which defaults to true.

Set the method for the URL request, one of:

• GET
• POST
• HEAD
• OPTIONS
• PUT
• DELETE
• TRACE

Indicates if the connection is going through a proxy.