Unable to fetch results of member functions of Data Exchange

Question

Hi, actually I am new to the AWS services and was going through the various methods provided by the **DataExchange Client class**. I am working with PHP SDK and when I am using the **ListDataSets** method it is returning the desired results but when I am trying to get the response of API (to which I have already subscribed), then it is not giving me the desired output.

Whereas, when I am doing the API call through POSTMAN, I am getting the response. For example, this is the response of postman:

![Everything is as expected in Postman](/media/postImages/original/IM2xH9epXKS0ugSZppkfzd4w)
 
As defined in the documentation, when **sendApiAsset()** will be called, in the response object there will be two things: One being the **body** and the second one being **Response Headers**. But in my case, the body is empty always. Why is that? The method should return the JSON object so that I can use it for further processing. I have searched every available resource but can't find a reason why that's happening.

![Enter image description here](/media/postImages/original/IMqruec5zGSzqGRm5YfaGUwA)

Here is the output which doesn't have anything in the body:
![Enter image description here](/media/postImages/original/IMyDY8-y0jStKS_0sszTK_yw)

Please help me out.

Answer

From what you posted, it appears that the response is, in fact, coming back with contents. The response message body is wrapped in a Stream Object (ref: https://docs.guzzlephp.org/en/stable/psr7.html#streams). To read it, you should be able cast or parse it:

$contents = (string) $result->getBody();

or

$contents_json = json_decode($result->getBody());

```
$contents = (string) $result->getBody();
```

or

```
$contents_json = json_decode($result->getBody());
```

Unable to fetch results of member functions of Data Exchange

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