firstdata | First Data Global Gateway E4 - Payment Gateway
kandi X-RAY | firstdata Summary
kandi X-RAY | firstdata Summary
Trying to provide a well documented & tested interaction with the First Data api. I have found many things that are undocumented and inconsistent hence the need for a place to gather some sanity. Main goal is to provide proper handling for the various responses (first data gateway & banks). Focus is on version 12+ by implementing the required SHA-1 HMAC hash security protocol. It should work with prior versions v9+ but currently not tested. Some error codes are currently "untestable" within the integration test environment. This library covers significantly more response types then what is listed in the documentation or any other library. Many undocumented responses have been found thus far. (See Test section for more info).
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QUESTION
I have a microcontroller which I communicate with my windows pc, through FT232RL. On the computer side, I am making a C-library to send and receive data, using windows API.
I have managed to:
- Receive data (or multiple receives),
- Transmit data (or multiple transmits),
- First transmit (or multiple transmits) and then receive data (or multiple receives)
But I have not managed to:
- Transmit Data and then receive.
If I receive anything, and then try to transmit, I get error. So, I guess when I receive data, there is a change in configuration of the HANDLE hComm
, which I cannot find.
So the question is, what changes to my HANDLE hComm
configuration when I receive data, which does not allow me to transmit after that?
Here is my code/functions and the main() that give me the error. If I run this, I get this "error 6" -screenshot of the error down below-:
...ANSWER
Answered 2021-Jun-14 at 01:17According to MSDN:Sample, Maybe you need to set a pin's signal state to indicate the data has been sent/received in your microcontroller program. More details reside in your serial communication transmission of data standard. And you should write code according to the result of WaitCommEvent(hCom, &dwEvtMask, &o);
like the linked sample.
QUESTION
I have a widget like this,
...ANSWER
Answered 2021-Jun-10 at 11:18You can use one future builder and wait for both method completion
QUESTION
I am getting error when setting up API test in Jmeter, same is working fine in POSTMAN.
Using HMAC authentication.
I have some basic knowledge of Jmeter new to the tool.
https://developer.firstdata.com/marketplace/api/authentication.html?shell#authentication.
Postman API response is working fine. Same as been work in Jmeter but I' getting response message as {"message":"HMAC signature cannot be verified, a valid date or x-date header is required for HMAC Authentication"} I have added JSR223 PostProcessor and HTTP Header Manager. and here are the details for both image attached below.
...ANSWER
Answered 2021-Apr-22 at 06:17Copying and pasting code from Postman won't work in JMeter because:
Postman is a browser extension and is capable of executing JavaScript and according to JMeter project main page:
JMeter is not a browser, it works at protocol level. As far as web-services and remote services are concerned, JMeter looks like a browser (or rather, multiple browsers); however JMeter does not perform all the actions supported by browsers. In particular, JMeter does not execute the Javascript found in HTML pages. Nor does it render the HTML pages as a browser does (it's possible to view the response as HTML etc., but the timings are not included in any samples, and only one sample in one thread is ever displayed at a time).
If you're trying to run JavaScript code you need to choose the appropriate language from the dropdown
JMeter doesn't include CryptoJS library, you will need to download it and load before running the JavaScript
Since JMeter 3.1 it's recommended to use Groovy language for scripting as this option provides maximum performance especially when it comes to "heavy" cryptographic operations so I would recommend re-writing your code in Groovy
I see you like screenshots so I include an example implementation as a screenshot here:
More information on Groovy scripting in JMeter: Apache Groovy - Why and How You Should Use It
QUESTION
I am making a website to modify db data. first, The structure of the component is as follows
...ANSWER
Answered 2021-Mar-22 at 03:34What you are attempting to do here violates not one but two of the "Essential" rules of Redux.
Ref objects are mutable by design. The reference changes by updating the .current
property of the ref object, but the object instance stays the same. This violates Redux rules that state must be immutable because the Redux state can be mutated by unrelated React code.
All data in your Redux store should be able to be converted to a JSON string
and back. Anything that would get lost in that conversion does not belong in Redux. An instance of a DOM element is not serializable.
You need to figure out what raw data is needed to represent your state. Store that data in Redux and use it to generate the correct DOM elements. Storing the DOM in Redux is doing it backwards.
QUESTION
I have written a LINQ query that returns a set of objects(anon-type) based on the JOIN condition
...ANSWER
Answered 2021-Feb-01 at 12:51If you want the combined weight and volume of all items in a single customer order, you can do this like so:
QUESTION
I'm trying to use Google Pay in my Xamarin app. First I added the GooglePlayServices package from nuget then I followed the documentation from here
here is my JSON
...ANSWER
Answered 2020-Dec-14 at 17:43after rereviewing the documentation I realized that my json object was wrong instead of
QUESTION
I have the following try/catch
block which is making 3 different api calls.
The following code is working fine but it is taking lot of time to execute when firstData
has large dataset.
ANSWER
Answered 2020-Dec-08 at 02:13Simplest tweak would be to push each Promise to an array inside the if
s:
QUESTION
I am on Maya / PySide2 / Python 2.7
I cannot set the header data with a custom table model.
I tried this:
...ANSWER
Answered 2020-Dec-07 at 10:35When implementing an abstract model, all the required methods should be implemented, otherwise the default ones will be used. In the case of header labels, the fallback is the headerData()
(which returns None in the default implementation) and setHeaderData()
. The latter is important, as it always returns a bool
value indicating whether the data has been set or not: the default behavior of abstract models is that no data is set, because the method must be implemented.
In order to correctly implement both reading and writing of header data, you must override both methods:
QUESTION
I am trying to implement Dismissible
to swipe and remove the item from the list in flutter, but I am getting the below error on implementation of the same
type '_InternalLinkedHashMap' is not a subtype of type 'String'
at this line of the code key: Key(item)
How should I resolve it ?
...ANSWER
Answered 2020-Oct-13 at 14:27type '_InternalLinkedHashMap' is not a subtype of type 'String'
means that it crashed because it was expecting a String and flutter did not find one.
This means that:
key: Key(item)
Key(item)-> Is not a String. I don´t know how are you creating Key/where is it.
My best guess is to try to find some method like...:
QUESTION
I am trying to nest listview.builder
in ExpansionTileCard
but not able to do so I am getting this error
ERROR
The following assertion was thrown during performResize(): Vertical viewport was given unbounded height.
CODE
...ANSWER
Answered 2020-Oct-09 at 08:35In Listview.builder you can try to keep shrinkWrap: true
,
and in Column Widget, you can keep mainAxisSize = MainAxisSize.min
,
A combination of this both should do the trick.
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Go to the "Terminal Section"
Click on the ECOMM Terminal it should expand (horrible ui).
In the Details tab record: GatewayID Password (click generate) - This is NOT the same password as your admin login Create a Transarmor Token (4 characters) Check Allow Soft Descriptors Select Support Level 2 Data and Level 3 Data
In the Api tab record: KeyId HMAC (click generate) make sure to hit the update button on the very bottom of the screen or else changes aren't saved.
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