prerequest script

[johncagnina]

Hi @geral2 ,

Is it possible to run a prerequest script. I need to get an auth header.

John

[geral2]

Hi,

Do you have any code, how we can get the headers in a prerequest?

[johncagnina]

See postman file and let me know

"info": {
"_postman_id": "f06e8df0-1a88-4c7b-8b90-ecf353c23a6b",
"name": "",
"schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json"
},
"item": [
{
"name": "newnotification",
"event": [
{
"listen": "prerequest",
"script": {
"id": "1c718015-8f7c-490d-861f-abf26bb7d94d",
"exec": [
"function getAuthHeader(resourceUri, keyName, key) {\r",
"\r",
" var d = new Date();\r",
" var sinceEpoch = Math.round(d.getTime() / 1000);\r",
" var expiry = (sinceEpoch + 3600);\r",
" var stringToSign = encodeURIComponent(resourceUri) + '\n' + expiry;\r",
" var hash = CryptoJS.HmacSHA256(stringToSign, key);\r",
" var hashInBase64 = CryptoJS.enc.Base64.stringify(hash);\r",
" var sasToken = 'SharedAccessSignature sr=' + encodeURIComponent(resourceUri) + '&sig=' + encodeURIComponent(hashInBase64) + '&se=' + expiry + '&skn=' + keyName;\r",
" console.log(sasToken);\r",
" \r",
"\r",
" return sasToken;\r",
"}\r",
"postman.setEnvironmentVariable('azure-authorization',getAuthHeader(request.url,"KeyName", "Key"));\r",
"postman.setEnvironmentVariable('current-date',new Date().toUTCString());"
],
"type": "text/javascript"
}
}
],
"request": {
"method": "POST",
"header": [
{
"key": "Authorization",
"value": "{{azure-authorization}}",
"type": "text"
},
{
"key": "Content-Type",
"value": "application/json",
"type": "text"
},
{
"key": "ServiceBusNotification-Format",
"value": "gcm",
"type": "text"
},
{
"key": "ServiceBusNotification-Tags",
"value": "veelead1",
"type": "text"
}
],
"body": {
"mode": "raw",
"raw": "{"data":{"gcm.notification.body":"Hello the push notification "}}"
},
"url": {
"raw": "https://xdnotification.servicebus.windows.net/xdnotihub/messages/?api-version=2015-01",
"protocol": "https",
"host": [
"xdnotificationpoweriq",
"servicebus",
"windows",
"net"
],
"path": [
"xdnotihub",
"messages",
""
],
"query": [
{
"key": "api-version",
"value": "2015-01"
},
{
"key": "",
"value": null,
"disabled": true
}
]
},
"description": ""
},
"response": []
}
],
"protocolProfileBehavior": {}
}