What would be best way to measure data usage in Android Xamarin app in Visual Studio?
I would like to know, how much data was transferred for each called request. I was looking in Xamarin Profiler but there isn't any info about data usage.
Thanks.
One approach that you could use is via Android Device Monitor to watch network traffic
Alternatively you could wrap your request if you are using HttpClient
in a custom handler and log the size of the request payload:
public class RequestLoggerHandler : HttpClientHandler
{
#if DEBUG
protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
var stopwatch = Stopwatch.StartNew();
HttpResponseMessage response = null;
var headers = request.Headers;
var responseString = string.Empty;
var requestString = string.Empty;
var outputStringBuilder = new StringBuilder();
const string LINE_ENDING = "===================================================================================================";
const string SECTION_ENDING = "---------------------------------------------------------------------------------------------------";
try
{
if (request.Content != null) requestString = await request.Content?.ReadAsStringAsync();
response = await base.SendAsync(request, cancellationToken);
responseString = await response.Content?.ReadAsStringAsync();
outputStringBuilder.AppendLine(LINE_ENDING);
// Headers
outputStringBuilder.AppendLine("REQUEST HEADERS:");
foreach (var header in headers)
outputStringBuilder.AppendLine($"HEADER: {header.Key}: {header.Value?.ToList()?.FirstOrDefault()}");
outputStringBuilder.AppendLine(SECTION_ENDING);
// Parameters
outputStringBuilder.AppendLine("REQUEST PARAMS:");
outputStringBuilder.AppendLine(requestString);
outputStringBuilder.AppendLine(SECTION_ENDING);
// Response
outputStringBuilder.AppendLine("RESPONSE:");
outputStringBuilder.AppendLine(responseString);
outputStringBuilder.AppendLine(SECTION_ENDING);
return response;
}
finally
{
stopwatch.Stop();
var totalSize = 0L;
if (response != null)
{
var bodylength = response.Content.Headers.ContentLength;
var headerlength = response.Headers.ToString().Length;
totalSize = bodylength.GetValueOrDefault() + headerlength;
}
outputStringBuilder.AppendLine(string.Format("REQUEST [{0}:{1}] Time:{2}| Size:{3}| HTTP-CODE:{4}",
request.Method.ToString(),
request.RequestUri,
stopwatch.Elapsed.ToString("ss\\.fff"),
totalSize.ToPrettyByteSize(),
response?.StatusCode.ToString() ?? "No Internet Connectivity"));
outputStringBuilder.AppendLine(LINE_ENDING);
Debug.WriteLine("\n" + outputStringBuilder);
}
}
#endif
}
Then in your output window using VSColorOutput extension it produces a nice readable report of your request/response, including time and size. You can of cause simplify this code if all you are after is just the request/response size.
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