PHP Zlib Extension not woking

[poovarasudev]

Hi,

I have deployed a simple php application which has default compression enabled.

I'm using "ini_set('zlib.output_compression', 'On');" to compress the responses. But I'm receiving "Internal Server Error" as the response.

I tried to manually compress the response by using gzencode() - zlib's function to get the compressed output. Still I'm facing the same issue.
![Screensho

[mnapoli]

What is the error message in the logs?

[poovarasudev]

@mnapoli While using gzencode(), I'm getting this :

2946e38f-7a46-43ea-8993-e4cb6f9ea4ee Invoke Error
{
"errorType": "Exception",
"errorMessage": "The Lambda response cannot be encoded to JSON.\nThis error usually happens when you try to return binary content. If you are writing an HTTP application and you want to return a binary HTTP response (like an image, a PDF, etc.), please read this guide: https://bref.sh/docs/runtimes/http.html#binary-responses\nHere is the original JSON error: 'Malformed UTF-8 characters, possibly incorrectly encoded'",
"stack": [
"#0 /var/task/vendor/bref/bref/src/Runtime/LambdaRuntime.php(187): Bref\Runtime\LambdaRuntime->postJson()",
"#1 /var/task/vendor/bref/bref/src/Runtime/LambdaRuntime.php(104): Bref\Runtime\LambdaRuntime->sendResponse()",
"#2 /opt/bootstrap(35): Bref\Runtime\LambdaRuntime->processNextEvent()",
"#3 {main}"
]
}

[mnapoli]

I guess you have your answer right here then.

[poovarasudev]

@mnapoli After handling binary-response, I'm getting the response status code as '200'. But the response is not decoded properly. Facing ERR_CONTENT_DECODING_FAILED issue in the browser.

FYI : Also there is no error logs in CloudWatch.

• This same code working fine in a Linux machine

[mnapoli]

I think PHP's zlib.output_compression is not compatible with Lambda and API Gateway.

Have a look at https://docs.aws.amazon.com/apigateway/latest/developerguide/api-gateway-gzip-compression-decompression.html and https://www.serverless.com/plugins/serverless-api-compression if you really want to implement that.