Large body files

[viktor-klestov]

Describe the bug
It doesn't handle large files. I have a 2.3G file that I want to be served as a response body. Unfortunately I get response with no body.
If I have "Response with 404 when the file path did not match any files" option checked, it returns 404, but file actually exists. Also when I truncate file it works as expected.

curl -v -X POST ... 'http://localhost:1900/csp/lpu11/DLO.Service.cls'

Error while serving the file content: File size (2428588349) is greater than 2 GB

File content:

<?xml version="1.0" encoding="UTF-8" ?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV='http://schemas.xmlsoap.org/soap/envelope/' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:s='http://www.w3.org/2001/XMLSchema'>
  <SOAP-ENV:Body>
<GetSprByIdResponse xmlns="..."><GetSprByIdResult>MQ==</GetSprByIdResult><pStream>{{VERY VERY LONG BASE64 STRING}}</pStream></GetSprByIdResponse>  </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

To Reproduce
You just need a huge file, I guess

{
    "source": "mockoon:1.17.0",
    "data": [
        {
            "type": "environment",
            "item": {
                "uuid": "9f9f9770-52b4-11ec-a569-b7dcfa209caa",
                "lastMigration": 19,
                "name": "asulon",
                "endpointPrefix": "",
                "latency": 0,
                "port": 1900,
                "routes": [
                    {
                        "uuid": "9f9f9771-52b4-11ec-a569-b7dcfa209caa",
                        "documentation": "",
                        "method": "post",
                        "endpoint": "csp/lpu11/DLO.Service.cls",
                        "responses": [
                            {
                                "uuid": "9f9fbe80-52b4-11ec-a569-b7dcfa209caa",
                                "body": "",
                                "latency": 0,
                                "statusCode": 200,
                                "label": "",
                                "headers": [
                                    {
                                        "key": "Content-Type",
                                        "value": "text/xml"
                                    }
                                ],
                                "filePath": "/home/dietolog/response.encoded",
                                "sendFileAsBody": false,
                                "rules": [
                                    {
                                        "target": "header",
                                        "modifier": "SOAPAction",
                                        "value": "action",
                                        "operator": "equals"
                                    },
                                    {
                                        "target": "header",
                                        "modifier": "Content-Type",
                                        "value": "application/xml",
                                        "operator": "equals"
                                    }
                                ],
                                "rulesOperator": "AND",
                                "disableTemplating": true,
                                "fallbackTo404": true
                            }
                        ],
                        "enabled": true,
                        "randomResponse": false,
                        "sequentialResponse": false
                    }
                ],
                "proxyMode": false,
                "proxyHost": "",
                "cors": true,
                "headers": [
                    {
                        "key": "Content-Type",
                        "value": "text/xml"
                    }
                ],
                "proxyReqHeaders": [
                    {
                        "key": "",
                        "value": ""
                    }
                ],
                "proxyResHeaders": [
                    {
                        "key": "",
                        "value": ""
                    }
                ],
                "proxyRemovePrefix": false,
                "hostname": "0.0.0.0",
                "tlsOptions": {
                    "enabled": false,
                    "type": "CERT",
                    "pfxPath": "",
                    "certPath": "",
                    "keyPath": "",
                    "caPath": "",
                    "passphrase": ""
                }
            }
        }
    ]
}

Expected behavior
Response with the body

Mockoon version:
1.17.0

OS / OS version:
Ubuntu 20.04.3 LTS

[viktor-klestov]

looks like problem here commons-server/src/libs/server.ts:448 readFile can't handle such size? May be stream read is possible?