Currently working on xamarin and trying to connect a scanner device(Zebra scanner) via bluetooth. CoreBluetooth.CBPeripheral is used to get information of device like id, name etc…
To scan device used following code :
protected override async Task StartScanningForDevicesNativeAsync(Guid[] serviceUuids, bool allowDuplicatesKey, CancellationToken scanCancellationToken)
{
// Wait for the PoweredOn state
await WaitForState(CBCentralManagerState.PoweredOn, scanCancellationToken).ConfigureAwait(false);
if (scanCancellationToken.IsCancellationRequested)
throw new TaskCanceledException("StartScanningForDevicesNativeAsync cancelled");
Trace.Message("Adapter: Starting a scan for devices.");
CBUUID[] serviceCbuuids = null;
if (serviceUuids != null && serviceUuids.Any())
{
serviceCbuuids = serviceUuids.Select(u => CBUUID.FromString(u.ToString())).ToArray();
Trace.Message("Adapter: Scanning for " + serviceCbuuids.First());
}
DiscoveredDevices.Clear();
_centralManager.ScanForPeripherals(serviceCbuuids, new PeripheralScanningOptions { AllowDuplicatesKey = allowDuplicatesKey });
}
And getting Response in Event by following code :
_centralManager.DiscoveredPeripheral += (sender, e) =>
{
Trace.Message("DiscoveredPeripheral: {0}, Id: {1}", e.Peripheral.Name, e.Peripheral.Identifier);
System.Diagnostics.Debug.WriteLine("DiscoveredPeripheral: {0}, Id: {1}", e.Peripheral.Name, e.Peripheral.Identifier);;
var name = e.Peripheral.Name;
foreach (var oData in e.AdvertisementData)
{
System.Diagnostics.Debug.WriteLine("AdvertisementData : key : " + oData.Key + " , Value : " + oData.Value);
}
if (e.AdvertisementData.ContainsKey(CBAdvertisement.DataLocalNameKey))
{
// iOS caches the peripheral name, so it can become stale (if changing)
// keep track of the local name key manually
name = ((NSString)e.AdvertisementData.ValueForKey(CBAdvertisement.DataLocalNameKey)).ToString();
}
var device = new Device(this, e.Peripheral, name, e.RSSI.Int32Value,
ParseAdvertismentData(e.AdvertisementData));
HandleDiscoveredDevice(device);
};
Now, in this AdvertisementData doesn’t contains CBAdvertisement.DataLocalNameKey so not able to get device name…?
Related
I have an ASP.NET Core 3.0 Web API endpoint that I have set up to allow me to post large audio files. I have followed the following directions from MS docs to set up the endpoint.
https://learn.microsoft.com/en-us/aspnet/core/mvc/models/file-uploads?view=aspnetcore-3.0#kestrel-maximum-request-body-size
When an audio file is uploaded to the endpoint, it is streamed to an Azure Blob Storage container.
My code works as expected locally.
When I push it to my production server in Azure App Service on Linux, the code does not work and errors with
Unhandled exception in request pipeline: System.Net.Http.HttpRequestException: An error occurred while sending the request. ---> Microsoft.AspNetCore.Server.Kestrel.Core.BadHttpRequestException: Request body too large.
Per advice from the above article, I have configured incrementally updated Kesterl with the following:
.ConfigureWebHostDefaults(webBuilder =>
{
webBuilder.UseKestrel((ctx, options) =>
{
var config = ctx.Configuration;
options.Limits.MaxRequestBodySize = 6000000000;
options.Limits.MinRequestBodyDataRate =
new MinDataRate(bytesPerSecond: 100,
gracePeriod: TimeSpan.FromSeconds(10));
options.Limits.MinResponseDataRate =
new MinDataRate(bytesPerSecond: 100,
gracePeriod: TimeSpan.FromSeconds(10));
options.Limits.RequestHeadersTimeout =
TimeSpan.FromMinutes(2);
}).UseStartup<Startup>();
Also configured FormOptions to accept files up to 6000000000
services.Configure<FormOptions>(options =>
{
options.MultipartBodyLengthLimit = 6000000000;
});
And also set up the API controller with the following attributes, per advice from the article
[HttpPost("audio", Name="UploadAudio")]
[DisableFormValueModelBinding]
[GenerateAntiforgeryTokenCookie]
[RequestSizeLimit(6000000000)]
[RequestFormLimits(MultipartBodyLengthLimit = 6000000000)]
Finally, here is the action itself. This giant block of code is not indicative of how I want the code to be written but I have merged it into one method as part of the debugging exercise.
public async Task<IActionResult> Audio()
{
if (!MultipartRequestHelper.IsMultipartContentType(Request.ContentType))
{
throw new ArgumentException("The media file could not be processed.");
}
string mediaId = string.Empty;
string instructorId = string.Empty;
try
{
// process file first
KeyValueAccumulator formAccumulator = new KeyValueAccumulator();
var streamedFileContent = new byte[0];
var boundary = MultipartRequestHelper.GetBoundary(
MediaTypeHeaderValue.Parse(Request.ContentType),
_defaultFormOptions.MultipartBoundaryLengthLimit
);
var reader = new MultipartReader(boundary, Request.Body);
var section = await reader.ReadNextSectionAsync();
while (section != null)
{
var hasContentDispositionHeader = ContentDispositionHeaderValue.TryParse(
section.ContentDisposition, out var contentDisposition);
if (hasContentDispositionHeader)
{
if (MultipartRequestHelper
.HasFileContentDisposition(contentDisposition))
{
streamedFileContent =
await FileHelpers.ProcessStreamedFile(section, contentDisposition,
_permittedExtensions, _fileSizeLimit);
}
else if (MultipartRequestHelper
.HasFormDataContentDisposition(contentDisposition))
{
var key = HeaderUtilities.RemoveQuotes(contentDisposition.Name).Value;
var encoding = FileHelpers.GetEncoding(section);
if (encoding == null)
{
return BadRequest($"The request could not be processed: Bad Encoding");
}
using (var streamReader = new StreamReader(
section.Body,
encoding,
detectEncodingFromByteOrderMarks: true,
bufferSize: 1024,
leaveOpen: true))
{
// The value length limit is enforced by
// MultipartBodyLengthLimit
var value = await streamReader.ReadToEndAsync();
if (string.Equals(value, "undefined",
StringComparison.OrdinalIgnoreCase))
{
value = string.Empty;
}
formAccumulator.Append(key, value);
if (formAccumulator.ValueCount >
_defaultFormOptions.ValueCountLimit)
{
return BadRequest($"The request could not be processed: Key Count limit exceeded.");
}
}
}
}
// Drain any remaining section body that hasn't been consumed and
// read the headers for the next section.
section = await reader.ReadNextSectionAsync();
}
var form = formAccumulator;
var file = streamedFileContent;
var results = form.GetResults();
instructorId = results["instructorId"];
string title = results["title"];
string firstName = results["firstName"];
string lastName = results["lastName"];
string durationInMinutes = results["durationInMinutes"];
//mediaId = await AddInstructorAudioMedia(instructorId, firstName, lastName, title, Convert.ToInt32(duration), DateTime.UtcNow, DateTime.UtcNow, file);
string fileExtension = "m4a";
// Generate Container Name - InstructorSpecific
string containerName = $"{firstName[0].ToString().ToLower()}{lastName.ToLower()}-{instructorId}";
string contentType = "audio/mp4";
FileType fileType = FileType.audio;
string authorName = $"{firstName} {lastName}";
string authorShortName = $"{firstName[0]}{lastName}";
string description = $"{authorShortName} - {title}";
long duration = (Convert.ToInt32(durationInMinutes) * 60000);
// Generate new filename
string fileName = $"{firstName[0].ToString().ToLower()}{lastName.ToLower()}-{Guid.NewGuid()}";
DateTime recordingDate = DateTime.UtcNow;
DateTime uploadDate = DateTime.UtcNow;
long blobSize = long.MinValue;
try
{
// Update file properties in storage
Dictionary<string, string> fileProperties = new Dictionary<string, string>();
fileProperties.Add("ContentType", contentType);
// update file metadata in storage
Dictionary<string, string> metadata = new Dictionary<string, string>();
metadata.Add("author", authorShortName);
metadata.Add("tite", title);
metadata.Add("description", description);
metadata.Add("duration", duration.ToString());
metadata.Add("recordingDate", recordingDate.ToString());
metadata.Add("uploadDate", uploadDate.ToString());
var fileNameWExt = $"{fileName}.{fileExtension}";
var blobContainer = await _cloudStorageService.CreateBlob(containerName, fileNameWExt, "audio");
try
{
MemoryStream fileContent = new MemoryStream(streamedFileContent);
fileContent.Position = 0;
using (fileContent)
{
await blobContainer.UploadFromStreamAsync(fileContent);
}
}
catch (StorageException e)
{
if (e.RequestInformation.HttpStatusCode == 403)
{
return BadRequest(e.Message);
}
else
{
return BadRequest(e.Message);
}
}
try
{
foreach (var key in metadata.Keys.ToList())
{
blobContainer.Metadata.Add(key, metadata[key]);
}
await blobContainer.SetMetadataAsync();
}
catch (StorageException e)
{
return BadRequest(e.Message);
}
blobSize = await StorageUtils.GetBlobSize(blobContainer);
}
catch (StorageException e)
{
return BadRequest(e.Message);
}
Media media = Media.Create(string.Empty, instructorId, authorName, fileName, fileType, fileExtension, recordingDate, uploadDate, ContentDetails.Create(title, description, duration, blobSize, 0, new List<string>()), StateDetails.Create(StatusType.STAGED, DateTime.MinValue, DateTime.UtcNow, DateTime.MaxValue), Manifest.Create(new Dictionary<string, string>()));
// upload to MongoDB
if (media != null)
{
var mapper = new Mapper(_mapperConfiguration);
var dao = mapper.Map<ContentDAO>(media);
try
{
await _db.Content.InsertOneAsync(dao);
}
catch (Exception)
{
mediaId = string.Empty;
}
mediaId = dao.Id.ToString();
}
else
{
// metadata wasn't stored, remove blob
await _cloudStorageService.DeleteBlob(containerName, fileName, "audio");
return BadRequest($"An issue occurred during media upload: rolling back storage change");
}
if (string.IsNullOrEmpty(mediaId))
{
return BadRequest($"Could not add instructor media");
}
}
catch (Exception ex)
{
return BadRequest(ex.Message);
}
var result = new { MediaId = mediaId, InstructorId = instructorId };
return Ok(result);
}
I reiterate, this all works great locally. I do not run it in IISExpress, I run it as a console app.
I submit large audio files via my SPA app and Postman and it works perfectly.
I am deploying this code to an Azure App Service on Linux (as a Basic B1).
Since the code works in my local development environment, I am at a loss of what my next steps are. I have refactored this code a few times but I suspect that it's environment related.
I cannot find anywhere that mentions that the level of App Service Plan is the culprit so before I go out spending more money I wanted to see if anyone here had encountered this challenge and could provide advice.
UPDATE: I attempted upgrading to a Production App Service Plan to see if there was an undocumented gate for incoming traffic. Upgrading didn't work either.
Thanks in advance.
-A
Currently, as of 11/2019, there is a limitation with the Azure App Service for Linux. It's CORS functionality is enabled by default and cannot be disabled AND it has a file size limitation that doesn't appear to get overridden by any of the published Kestrel configurations. The solution is to move the Web API app to a Azure App Service for Windows and it works as expected.
I am sure there is some way to get around it if you know the magic combination of configurations, server settings, and CLI commands but I need to move on with development.
While executing my test suite I have to switch between different wifi networks available in Android Device.
In the middle of the execution I have to change my wifi connection from Wifi_Network_1 to Wifi_Network_2 provided ssid name and password of wifi network is known. How can it be done?
I am using:
Appium server -->1.8.1
java-client --> 6.1.0
selenium-java --> 3.13.0
Since NetworkConnectionSetting has been deprciated, I am not able to find alternate for it.
I can toggle wifi on/off using
driver.toggleWifi();
But it is not suitable for my case as i need to toggle between different wifi network available using SSID name and its password.
Thanks in advance.
Hi I'am using this method due Appium deprecated their switch for wifi, and I've created my own override via console via commands from adb. It is working for me so give it a try:
public synchronized boolean wifiSetup(String udid, boolean flg) {
synchronized (this) {
String flgEnabled = (flg) ? "enable" : "disable";
List<String> output = Console.runProcess(false, "adb -s " + udid + " shell am broadcast -a io.appium.settings.wifi --es setstatus " + flgEnabled);
for (String line : output) {
System.err.println(line);
if (line.equalsIgnoreCase("Broadcast completed: result=-1"))
return true;
}
return false;
}
}
usage to switch off:
wifiSetup("xxxUDIDfromAndroid", false);
usage to switch on:
wifiSetup("xxxUDIDfromAndroid", true);
And here is part for calling console:
public class Console {
private static final String[] WIN_RUNTIME = { "cmd.exe", "/C" };
private static final String[] OS_LINUX_RUNTIME = { "/bin/bash", "-l", "-c" };
private Console() {
}
private static <T> T[] concat(T[] first, T[] second) {
T[] result = Arrays.copyOf(first, first.length + second.length);
System.arraycopy(second, 0, result, first.length, second.length);
return result;
}
#SuppressWarnings({ "hiding"})
private static <String> String[] concatStr(String[] first, String[] second) {
String[] result = Arrays.copyOf(first, first.length + second.length);
System.arraycopy(second, 0, result, first.length, second.length);
return result;
}
public static List<String> runProcess(boolean isWin, String... command) {
String[] allCommand = null;
try {
if (isWin) {
allCommand = concat(WIN_RUNTIME, command);
} else {
allCommand = concat(OS_LINUX_RUNTIME, command);
}
ProcessBuilder pb = new ProcessBuilder(allCommand);
pb.redirectErrorStream(true);
Process p = pb.start();
p.waitFor();
BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
String _temp = null;
List<String> line = new ArrayList<String>();
while ((_temp = in.readLine()) != null) {
// system.out.println("temp line: " + _temp);
line.add(_temp);
}
// system.out.println("result after command: " + line);
return line;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
Hope this helps,
In my Xamarin.iOS project I used SecRecord/SecKeyChain to store my token values and app version. From production log I found keychain related exceptions with status code 'InteractionNotAllowed' when try to write/read items in keychain. Apple documents states that to resolve InteractionNotAllowed error we need to change the default kSecAttrAccessible attribute value from ‘WhenUnlocked' to ‘Always’.
But in my existing code when I changed accessible attribute to 'Always' app log out because it failed to read token from keychain. It return’s 'Item not found' when read. But when I tried to save token again it returns 'Duplicate item'. So again I tried to remove same item but this time it again returns 'Item not found'. That’s really strange I can’t delete it and I can’t read it with same key.
Below is the code snippet -
private SecRecord CreateRecordForNewKeyValue(string accountName, string value)
{
return new SecRecord(SecKind.GenericPassword)
{
Service = App.AppName,
Account = accountName,
ValueData = NSData.FromString(value, NSStringEncoding.UTF8),
Accessible = SecAccessible.Always //This line of code is newly added.
};
}
private SecRecord ExistingRecordForKey(string accountName)
{
return new SecRecord(SecKind.GenericPassword)
{
Service = App.AppName,
Account = accountName,
Accessible = SecAccessible.Always //This line of code is newly added.
};
}
public void SetValueForKeyAndAccount(string value, string accountName, string key)
{
var record = ExistingRecordForKey(accountName);
try
{
if (string.IsNullOrEmpty(value))
{
if (!string.IsNullOrEmpty(GetValueFromAccountAndKey(accountName, key)))
RemoveRecord(record);
return;
}
// if the key already exists, remove it before set value
if (!string.IsNullOrEmpty(GetValueFromAccountAndKey(accountName, key)))
RemoveRecord(record);
}
catch (Exception e)
{
//Log exception here -("RemoveRecord Failed " + accountName, e,);
}
//Adding new record values to keychain
var result = SecKeyChain.Add(CreateRecordForNewKeyValue(accountName, value));
if (result != SecStatusCode.Success)
{
if (result == SecStatusCode.DuplicateItem)
{
try
{
//Log exception here -("Error adding record: {0} for Account-" + accountName, result), "Try Remove account");
RemoveRecord(record);
}
catch (Exception e)
{
//Log exception here -("RemoveRecord Failed after getting error SecStatusCode.DuplicateItem for Account-" + accountName, e);
}
}
else
throw new Exception(string.Format("Error adding record: {0} for Account-" + accountName, result));
}
}
public string GetValueFromAccountAndKey(string accountName, string key)
{
try
{
var record = ExistingRecordForKey(accountName);
SecStatusCode resultCode;
var match = SecKeyChain.QueryAsRecord(record, out resultCode);
if (resultCode == SecStatusCode.Success)
{
if (match.ValueData != null)
{
string valueData = NSString.FromData(match.ValueData, NSStringEncoding.UTF8);
if (string.IsNullOrEmpty(valueData))
return string.Empty;
return valueData;
}
else if (match.Generic != null)
{
string valueData = NSString.FromData(match.ValueData, NSStringEncoding.UTF8);
if (string.IsNullOrEmpty(valueData))
return string.Empty;
return valueData;
}
else
return string.Empty;
}
}
catch (Exception e)
{
// Exception logged here -("iOS Keychain Error for account-" + accountName, e);
}
return string.Empty;
}
Any help would be great! Thanks
The property Service is also an unique identification when we store or retrieve data using KeyChain. You didn't post your GetValueFromAccountAndKey() method, so we don't know what is the key used for? But in your case, you should use the same Service to retrieve value:
string GetValueFromAccountAndKey(string accoundName, string service)
{
var securityRecord = new SecRecord(SecKind.GenericPassword)
{
Service = service,
Account = accoundName
};
SecStatusCode status;
NSData resultData = SecKeyChain.QueryAsData(securityRecord, false, out status);
var result = resultData != null ? new NSString(resultData, NSStringEncoding.UTF8) : "Not found";
return result;
}
Since you just make a hard code in your CreateRecordForNewKeyValue()( the Service has been written as a constant ), if you want to retrieve your value you should also set the Service as App.AppName in the method GetValueFromAccountAndKey().
It return’s 'Item not found' when read. But when I tried to save token
again it returns 'Duplicate item'.
This is because when we use the same Account but different Service to retrieve data, KeyChain can't find the corresponding SecRecord. This made you thought the SecRecord didn't exist, then use the same Account to store value. The Duplicate item result throws out. For a SecRecord, the Account and Service must both be unique.
Consider I am running my tests using Appium in multiple Real device.
is it possible to get getDeviceName and getVersion runtime using Appium.
Because i need to take screenshots and save it in a folder with that Devicename
I can show you how to get a list of running devices and emulators but I have no code to get the versions they are running.
/**
* Determine already connected physical devices or already running emulators
* #author Bill Hileman
* #return String List of running/connected devices
*/
public List<String> getRunningDevicesList() {
List<String> dev = new ArrayList<String>();
//Location of the Android SDK
String sdkPath = System.getenv("ANDROID_HOME");
if (sdkPath == null) {
System.err.println("ANDROID_HOME is not set in the environment");
Assert.fail();
} else {
//Location of Android Debug Bridge
String adbPath = sdkPath + "/platform-tools/adb.exe";
if (!new File(adbPath).exists()) {
System.err.println(adbPath + " is not found");
Assert.fail();
} else {
try {
String[] commandListAVDs = new String[]{adbPath, "devices"};
System.out.println("Executing command: " + adbPath + " devices");
Process process = new ProcessBuilder(commandListAVDs).start();
BufferedReader inputStream = new BufferedReader(
new InputStreamReader(process.getInputStream()));
String line = null;
while ((line = inputStream.readLine()) != null)
//ignore lines that do not contain device information
if (!(line.trim().equals("") || line.equals("List of devices attached") || line.startsWith("* daemon ")))
dev.add(line.trim());
} catch (Exception e) {
System.err.println("Unable to read device list: " + e);
e.printStackTrace();
}
System.out.println("Running Devices: " + dev.toString());
}
}
return dev;
}
I developed windows service for sending push notifications to both iOS and Android apps using pushsharp library. Recently I updated the library from 2.x.x to 4.0.10 and GCM notifications are sending fine but Ios notifications are not sending, always getting "Connection Error" And I need to send notifications to thousands of tokens, So I am looping through all the tokens and queuing. Even for 10 tokens also getting same error.
Please suggest me what's wrong with my code. Here is my code snippet
public static void SendNotifications(List currentBrandNotications, long brandId)
{
byte[] appleCert = null;
string p12File = #"aps_production_brand" + brandId.ToString().Trim() + ".p12";
try
{
appleCert = File.ReadAllBytes(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "P12\\" + p12File));
}
catch (Exception ex)
{
logger.Debug("P12 certificate is not avilable for BrandId: " + brandId);
}
try
{
logger.Debug(" Send PushNotifications To Apple :- ");
if (appleCert != null)
{
// Configuration
var config = new ApnsConfiguration(ApnsConfiguration.ApnsServerEnvironment.Production, appleCert, currentBrandNotications[0].P12Password);
// Create a new broker
var apnsBroker = new ApnsServiceBroker(config);
var fbs = new FeedbackService(config);
// Wire up events
apnsBroker.OnNotificationFailed += (Notification, aggregateEx) =>
{
//ScheduledNotification ScheduledNotification = new InstantPNScheduler.ScheduledNotification();
aggregateEx.Handle(ex =>
{
// See what kind of exception it was to further diagnose
if (ex is ApnsNotificationException)
{
var notificationException = (ApnsNotificationException)ex;
// Deal with the failed notification
var apnsNotification = notificationException.Notification;
var statusCode = notificationException.ErrorStatusCode;
logger.Debug("Apple Notification Failed: ID=" + apnsNotification.Identifier + " Code=" + statusCode);
}
else
{
// Inner exception might hold more useful information like an ApnsConnectionException
logger.Debug(ex.InnerException.ToString());
}
// Mark it as handled
return true;
});
};
apnsBroker.OnNotificationSucceeded += (Notification) =>
{
logger.Debug("Apple Notification Sent!");
};
// Start the broker
apnsBroker.Start();
foreach (ScheduledNotification notification in currentBrandNotications)
{
try
{
//logger.Debug("iOS Device token=" + notification.DeviceToken); apnsBroker.QueueNotification(new ApnsNotification
{
DeviceToken = notification.DeviceToken,
Payload = JObject.Parse("{\"aps\":{\"alert\":\"" + notification.Message + "\",\"badge\":1,\"sound\":\"sound.caf\",\"BrandId\":\"" + brandId.ToString() + "\",\"notificationType\":\"Basic\",\"DeviceType\":\"" + notification.DeviceType + "\",\"DeviceToken\":\"" + notification.DeviceToken + "\",\"NotificationId\":\"" + notification.NotificationId + "\"}}")
});
}
Thread.Sleep(800);
}
catch (Exception ex)
{
logger.Debug(" SendPushNotificationToApple :- " + ex.Message);
}
}
// Stop the broker, wait for it to finish
// This isn't done after every message, but after you're
// done with the broker
apnsBroker.Stop();
}
}
catch (Exception ex)
{
logger.Debug("Error" + ex.Message);
}
finally
{
//apnsBroker = null;
}
}
Note : If I put thread.sleep(800) in for loop, then notifications will be sent but it's getting too late in case of thousands of tokens. I need it without thread.sleep(800), even If I reduce below 800ms, getting same exception.
Please help me what's wrong with my code.
Any help would be appreciated.