PowerApps by itself doesn't have a way to check an arbitrary web service, as all communication is done via connectors (data sources). You can, however, create a custom connector that can do this.
To test this I create an Azure Function with the code below:
using System.Net;
using System.Net.Http;
public static async Task<HttpResponseMessage> Run(HttpRequestMessage req, TraceWriter log)
{
log.Info("C# HTTP trigger function processed a request.");
// parse query parameter
string url = req.GetQueryNameValuePairs()
.FirstOrDefault(q => string.Compare(q.Key, "url", true) == 0)
.Value;
if (url == null)
{
// Get request body
dynamic data = await req.Content.ReadAsAsync<object>();
url = data?.url;
}
if (url == null) {
return req.CreateResponse(HttpStatusCode.BadRequest, "Please inform the URL to test");
}
using (HttpClient c = new HttpClient()) {
try {
var resp = await c.GetAsync(url);
log.Info($"Url: {url}, Status: {resp.StatusCode}");
return req.CreateResponse(HttpStatusCode.OK, new Result { StatusCode = (int)resp.StatusCode, Url = url });
} catch (Exception ex) {
log.Info($"Exception: {ex.GetType().FullName} - {ex.Message}");
return req.CreateResponse(HttpStatusCode.OK, new Result { StatusCode = 0, Url = url });
}
}
}
public class Result {
public string Url { get; set; }
public int StatusCode { get; set; }
}
And then use a custom connector - for example, with the OpenAPI definition below:
{
"swagger": "2.0",
"info": {
"title": "ForumThread235074",
"description": "Connector for https://powerusers.microsoft.com/t5/General-Discussion/Check-Web-Service-or-Server-is-up-and-running-or-not-using/m-p/235074",
"version": "1.0"
},
"host": "YOUR.HOSTNAME.GOES.HERE.net",
"basePath": "/api/",
"schemes": [
"https"
],
"consumes": [],
"produces": [],
"paths": {
"/ForumThread235074": {
"post": {
"responses": {
"default": {
"description": "default",
"schema": {
"type": "object",
"properties": {
"Url": {
"type": "string",
"description": "Url"
},
"StatusCode": {
"type": "integer",
"format": "int32",
"description": "StatusCode"
}
}
}
}
},
"summary": "GetStatus",
"description": "GetStatus",
"operationId": "GetStatus",
"parameters": [
{
"name": "body",
"in": "body",
"required": false,
"schema": {
"type": "object",
"properties": {
"url": {
"type": "string",
"description": "url"
}
}
}
}
]
}
}
},
"definitions": {},
"parameters": {},
"responses": {},
"securityDefinitions": {},
"security": [],
"tags": []
}
With this custom connector you can then have an app that can use that connector to check a certain web server is running.
Hope this helps!
