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using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Threading.Tasks;
using System.IO;
using System.Text;
public static async Task<HttpResponseMessage> Run(HttpRequestMessage req, TraceWriter log)
log.Info($"C# HTTP trigger proxy function processed a request. RequestUri={req.RequestUri}");
// parse query parameter
string requesturl = req.GetQueryNameValuePairs()
.FirstOrDefault(q => string.Compare(q.Key, "requesturl", true) == 0)
log.Info($"C# HTTP trigger proxy function is trying to get response from {requesturl}");
Encoding outputencoding = Encoding.GetEncoding("ASCII");
var ProxyResponse = new HttpResponseMessage();
HttpStatusCode statuscode = new HttpStatusCode();
if (requesturl == null)
statuscode = HttpStatusCode.BadRequest;
StringContent errorcontent =new StringContent("Please pass a web request url on the query string or in the request body", outputencoding);
ProxyResponse = req.CreateResponse(statuscode, errorcontent);
ProxyResponse.Content.Headers.ContentType = new MediaTypeHeaderValue("text/html");
ProxyResponse.Content = errorcontent;
} else {
HttpClient client = new HttpClient();
HttpResponseMessage response = await client.GetAsync(requesturl);
ProxyResponse = response;
ProxyResponse.Content.Headers.ContentType = new MediaTypeHeaderValue("text/html");
return ProxyResponse;
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