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The HTTP interface is used to send and receive data and information from HTTP server. If the remote HTTP server requires bearer authentication, the required configuration for bearer authentication can be specified here.

title
Info

File location

<WorkspaceDirectory>\DataFiles\xio.HTTP.BearerDefinitions.dat

Info

Changes within this definition file are taking effect immediately. No server restart is required.

Col#

Parameter 

Description

Scope

Unit

Mandatory / default value

1

Name

it is the key that identifies the

resource within the data point definitions

bearer definition. The name can freely be chosen but has to be unique.

string

None

mandatory

2

Type

type of encoding. 

XML, JSON, URL encoded, Text, Form DataNonemandatory3Resource contentit defines the content that is excepted at the HTTP server. The structure and type depends on the used encoding and on the direction (polling or update). Examples and more information can be found within this tutorial. As an alternative, the content can be specified within a separate file. The file name must be specified in "Resource file name"

Bearer method

if static is used, the bearer token is a static one that has to be defined in "Bearer Token or Refresh Url". If dynamic is chosen, the bearer token has to be fetched from a HTTP server periodically. 

Static, Dynamic

None

Static

3

Bearer token or refresh URL

if static is used, the bearer token has to be defined here. If dynamic is chosen, the HTTP server URL from which the bearer token can be retrieved must be defined here.

string

None

mandatory

The following parameters are only required, if "dynamic" is chosen as bearer method:

file name

Col#

Parameter 

Description

Scope

Unit

Mandatory / default value

4

Refresh method

the HTTP request method for retrieving the token. 

POST, PUT, GET

None

POST

5

Refresh interval

the interval in seconds for refreshing the bearer token.

1 – 65535

seconds

60

6

Request resource

the resource that is used for requesting the bearer token. It has to match the name that is used in the HTTP resource definition.

Reference to HTTP resource definition

None

mandatory

7

Request parameters

A comma-separated list of parameters that are used to replace the placeholders within the request resource ({0}, {1}, ...).

string

None

empty

8

Response Resource

the resource that is used for extracting the token from the response. It has to match the name that is used in the HTTP resource definition.

Reference to HTTP resource definition

None

mandatory

9

Response parameters

A comma-separated list of parameters that are used to replace the placeholders within the request resource ({0}, {1}, ...).

string

None

empty

10

Authentication method

The authentication method (None, Basic or Digest) if required by the HTTP server.

None, Basic, Digest

None

None

11

Authentication user

Username for Basic or Digest HTTP authentication if required by the HTTP server. 

string

None

empty

4Resource file namehere a file name can be defined that contains content that is excepted at the HTTP server. The file must be located in <WorkspaceDirectory>\DataFiles\. The structure and type depends on the used encoding and on the direction (polling or update). Examples and more information can be found within this tutorial. As an alternative, the content can be specified directly in "Resource content"

12

Authentication password

Password for Basic or Digest HTTP authentication if required by the HTTP server. If empty, no HTTP authentication is used.

string

None

empty

13

Additional HTTP headers

A list of additional HTTP headers which is included in each HTTP request, e.g. for authentication purposes. Additional headers must have the following form: "<key1>: <value1>\r\n<key2>: <value2>\r\n<key3>: <value3>..."

string

None

empty

14

Response Refresh Resource

If the bearer authentication uses a dynamic refresh token, the resource to extract this refresh token can be specified here.

string

None

empty