Method: echo

Echos back a string sent from the client.

If the endpoint encounters an error while processing the request, the response from this endpoint will be of type ErrorResponse.

Responses to this query may be empty if this method does not return an HTTP 200. The response body is empty in situations where an ErrorResponse with a clear description could be used to help an attacker understand the payment integrator account identifier of other integrators. In these situations, where either the signing key doesn't match, the payment integrator identifier was not found, or the encryption key was unknown, this method will return an HTTP 404 with an empty body. If the request signature could be verified, additional information regarding the error will be returned in the response body.

An example request looks like:


{
  "requestHeader": {
    "protocolVersion": {
      "major": 2
    },
    "requestId": "G1MQ0YERJ0Q7LPM",
    "requestTimestamp": {
      "epochMillis": "1481899949606"
    },
    "paymentIntegratorAccountId": "InvisiCashUSA_USD"
  },
  "clientMessage": "Client echo message"
}

An example success response looks like:


{
  "responseHeader": {
    "responseTimestamp": {
      "epochMillis":"1481899950236"
    }
  },
  "clientMessage": "Client echo message",
  "serverMessage": "Debug ID 12345"
}

HTTP request

POST https://vgw.googleapis.com/secure-serving/gsp/v2/echo/:PIAID

Request body

The request body contains data with the following structure:

JSON representation 
{
  "requestHeader": {
    object (RequestHeader)
  },
  "clientMessage": string
}
Fields
requestHeader

object (RequestHeader)

REQUIRED: Common header for all requests.
clientMessage

string

REQUIRED: Message to echo in the response.

Response body

If successful, the response body contains data with the following structure:

Response object for the echo method.

JSON representation 
{
  "responseHeader": {
    object (ResponseHeader)
  },
  "clientMessage": string,
  "serverMessage": string
}
Fields
responseHeader

object (ResponseHeader)

REQUIRED: Common header for all responses.
clientMessage

string

REQUIRED: Message received in the request.
serverMessage

string

OPTIONAL: Server message, independent of the clientMessage being echoed.

RequestHeader

Header object that is defined on all requests sent to the server.

JSON representation 
{
  "requestId": string,
  "requestTimestamp": {
    object (Timestamp)
  },
  "protocolVersion": {
    object (Version)
  },
  "paymentIntegratorAccountId": string
}
Fields
requestId

string

REQUIRED: Unique identifier of this request.

This is a string that has a max length of 100 characters, and contains only the characters "a-z", "A-Z", "0-9", ":", "-", and "_".
requestTimestamp

object (Timestamp)

REQUIRED: Timestamp of this request. The receiver must verify that this timestamp is ± 60s of 'now', and reject the request if it is not. This request timestamp is not idempotent upon retries.
protocolVersion

object (Version)

REQUIRED: The version of this request.
paymentIntegratorAccountId

string

REQUIRED: Identifies a unique account with contractual constraints.