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How to fix Amazon.Rekognition.AmazonRekognitionException?

I am getting AmazonRekognitionException as below when trying to run CompareFacesResponse, I am stuck, what should I do or check?
Amazon.Rekognition.AmazonRekognitionException: The request signature we calculated does not match the signature you provided. Check your AWS Secret Access Key and signing method. Consult the service documentation for details. ---> Amazon.Runtime.Internal.HttpErrorResponseException: Exception of type 'Amazon.Runtime.Internal.HttpErrorResponseException' was thrown
AWS credentials access key and secret are checked and correct
public static async Task<Tuple<bool, string>> Rekognition_Compare_Faces(string _source, string _target, string _bucketName)
{
const string HOSTNAME = "https://rekognition.ap-southeast-1.amazonaws.com/";
const string ACCESS_KEY = "my_access_key";
const string ACCESS_SECRET = "my_secret_key";
float _similarityThreshold = 70F;
bool _ret = false;
string _confidence = string.Empty;
try
{
AmazonRekognitionConfig _config = new AmazonRekognitionConfig();
_config.ServiceURL = HOSTNAME + _bucketName;
AmazonRekognitionClient _rekognitionClient = new AmazonRekognitionClient(ACCESS_KEY, ACCESS_SECRET, _config);
Amazon.Rekognition.Model.Image _imageSource = new Amazon.Rekognition.Model.Image();
Amazon.Rekognition.Model.Image _imageTarget = new Amazon.Rekognition.Model.Image();
Amazon.Rekognition.Model.S3Object _s3_source = new Amazon.Rekognition.Model.S3Object { Bucket = _bucketName, Name = _source };
Amazon.Rekognition.Model.S3Object _s3_target = new Amazon.Rekognition.Model.S3Object { Bucket = _bucketName, Name = _target };
CompareFacesRequest _compareFacesRequest = new CompareFacesRequest()
{
SourceImage = new Amazon.Rekognition.Model.Image
{
S3Object = new Amazon.Rekognition.Model.S3Object
{
Bucket = HOSTNAME + _bucketName,
Name = _source
}
},
TargetImage = new Amazon.Rekognition.Model.Image
{
S3Object = new Amazon.Rekognition.Model.S3Object
{
Bucket = HOSTNAME + _bucketName,
Name = _target
}
},
SimilarityThreshold = _similarityThreshold
};
// IT THROWN HERE!!
CompareFacesResponse _compareFacesResponse = await _rekognitionClient.CompareFacesAsync(_compareFacesRequest);
// Display results
foreach (CompareFacesMatch match in _compareFacesResponse.FaceMatches)
{
ComparedFace face = match.Face;
BoundingBox position = face.BoundingBox;
_confidence = match.Similarity.ToString(AppSettings.Decimal_Number_Format) + "%";
_ret = true;
}
}
catch (Exception ex) { await ClsMain.SaveLog("AWS.Compare_Faces: " + ex.ToString()); }
finally { }
return await Task.FromResult(new Tuple<bool, string>(_ret, _confidence));
}
has anybody experience on this?
thanks a lot in advance
Regards
Don

I had the same error.
I tried adding RegionEndpoint = RegionEndpoint.EUWest1 to my AmazonRekognitionConfig so it now looks like this:
var config = new AmazonRekognitionConfig
{
ServiceURL = $"https://rekognition.ap-southeast-1.amazonaws.com/{_awsSettings.BucketName}",
RegionEndpoint = RegionEndpoint.EUWest1
};
var client = new AmazonRekognitionClient(_awsSettings.AccessKey, _awsSettings.Secret, config);
This fixed the problem for me.

Check if AWS Lambda function completed the job

I am currently sending a file to be transcoded to my AWS lambda function. After I send the file, I send a notification to the SQS for some external aplication to start downloading the transcoded files.
The problem is, sometimes, the download of the files happen before the Lambda function completed.
How can I only send the notification to SQS after the Lambda completed.
I tried getting the Job.Status as follow, but not sure how to query it again if Status is not Complete.
Here is my code:
using (var eClient = new AmazonElasticTranscoderClient())
{
var response = await this.S3Client.GetObjectMetadataAsync(s3Event.Bucket.Name, s3Event.Object.Key);
var videoPresets = new List<Preset>();
var presetRequest = new ListPresetsRequest();
ListPresetsResponse presetResponse;
do
{
presetResponse = await eClient.ListPresetsAsync(presetRequest);
videoPresets.AddRange(presetResponse.Presets);
presetRequest.PageToken = presetResponse.NextPageToken;
} while (presetResponse.NextPageToken != null);
var pipelines = new List<Pipeline>();
var pipelineRequest = new ListPipelinesRequest();
ListPipelinesResponse pipelineResponse;
do
{
pipelineResponse = await eClient.ListPipelinesAsync(pipelineRequest);
pipelines.AddRange(pipelineResponse.Pipelines);
pipelineRequest.PageToken = pipelineResponse.NextPageToken;
} while (pipelineResponse.NextPageToken != null);
var pipeLine = s3Event.Bucket.Name.ToLower().Contains("test") ? pipelines.First(p => p.Name.ToLower().Contains("test")) : pipelines.First(p => !p.Name.ToLower().Contains("test"));
//HLS Stuff for Apple
var usablePreset = videoPresets.Where(p => p.Name.Contains("HLS") && !p.Name.Contains("HLS Video")).ToList();
var hlsPresets = new List<Preset>();
foreach (var preset in usablePreset)
{
var resolution = preset.Name.Replace("System preset: HLS ", "");
switch (resolution)
{
case "2M":
case "1M":
case "400k":
hlsPresets.Add(preset);
break;
}
}
var jobReq = new CreateJobRequest
{
PipelineId = pipeLine.Id,
Input = new JobInput() { Key = fileName, },
OutputKeyPrefix = outPutPrefix
//OutputKeyPrefix = "LambdaTest/" + playlistName + "/"
};
var outputs = new List<CreateJobOutput>();
var playlistHLS = new CreateJobPlaylist() { Name = "HLS_" + playlistName, Format = "HLSv3" };
foreach (var preset in hlsPresets)
{
var resolution = preset.Name.Replace("System preset: HLS ", "").Replace(".", "");
var newName = resolution + "_" + playlistName;
var output = new CreateJobOutput() { Key = newName, PresetId = preset.Id, SegmentDuration = "10" };
outputs.Add(output);
playlistHLS.OutputKeys.Add(newName);
}
jobReq.Playlists.Add(playlistHLS);
jobReq.Outputs = outputs;
//var temp = JsonConvert.SerializeObject(jobReq);
var reply = eClient.CreateJobAsync(jobReq);
var transcodingCompleted = reply.Result.Job.Status == "Complete" ? true : false;
do {
//somehow need to query status again
} while (!transcodingCompleted);
if (transcodingCompleted)
await SendAsync(jobReq.OutputKeyPrefix, pipeLine.OutputBucket);
}
The part I am interested in:
var reply = eClient.CreateJobAsync(jobReq);
var transcodingCompleted = reply.Result.Job.Status == "Complete" ? true : false;
do {
//somehow need to query status again
} while (!transcodingCompleted);
if (transcodingCompleted)
await SendAsync(jobReq.OutputKeyPrefix, pipeLine.OutputBucket);

Epicor 10.1.5 SessionModSvcContractClient logout

Has anybody ever had an issue where the SessionModSvcContractClient Logout function throws an Exception: Additional information:
Object reference not set to an instance of an object.
When I tried LogoutAsync and Close methods they worked fine.
Can anybody help me figure out why that's happening or the difference between the 3.
I'm basically trying to use create the test from the WCF guide
static void Main(string[] args)
{
//use a self-signed certificate in IIS, be sure to include the following code. This code speeds up calls to the services and prevents the method from trying to validate the certificate with the known authorities.
ServicePointManager.ServerCertificateValidationCallback += (sender, certificate, chain, errors) => { return true; };
//You can toggle the value assigned to this variable to test the two bindings: SOAPHttp or BasicHttp
EndpointBindingType bindingType = EndpointBindingType.SOAPHttp;
//Epicor credentials:
string epicorUserID = "XXX";
string epiorUserPassword = "XXX";
string scheme = "http";
if (bindingType == EndpointBindingType.BasicHttp)
{
scheme = "https";
}
UriBuilder builder = new UriBuilder(scheme, "localhost");
string webServicesLink = "XXX/";
builder.Path = webServicesLink + "Ice/Lib/SessionMod.svc";
SessionModSvcContractClient sessionModClient = GetClient < SessionModSvcContractClient, SessionModSvcContract > (builder.Uri.ToString(), epicorUserID, epiorUserPassword, bindingType);
builder.Path = webServicesLink + "Erp/BO/AbcCode.svc";
ABCCodeSvcContractClient abcCodeClient = GetClient<ABCCodeSvcContractClient, ABCCodeSvcContract>(builder.Uri.ToString(), epicorUserID, epiorUserPassword, bindingType);
Guid sessionId = Guid.Empty;
sessionId = sessionModClient.Login();
//Create a new instance of the SessionModSvc. Do this because when you call any method on the service
//client class, you cannot modify its Endpointbehaviors.
builder.Path = webServicesLink + "Ice/Lib/SessionMod.svc";
sessionModClient = GetClient < SessionModSvcContractClient, SessionModSvcContract > (builder.Uri.ToString(),epicorUserID,epiorUserPassword,bindingType);
sessionModClient.Endpoint.EndpointBehaviors.Add(new HookServiceBehavior(sessionId, epicorUserID));
abcCodeClient.Endpoint.EndpointBehaviors.Add(new HookServiceBehavior(sessionId, epicorUserID));
var ts = new ABCCodeTableset();
abcCodeClient.GetNewABCCode(ref ts);
var newRow = ts.ABCCode.Where(n => n.RowMod.Equals("A", StringComparison.InvariantCultureIgnoreCase)).FirstOrDefault();
if (newRow != null)
{
newRow.ABCCode = "G";
newRow.CountFreq = 30;
newRow.StockValPcnt = 100;
abcCodeClient.Update(ref ts);
ts = null;
ts = abcCodeClient.GetByID("G");
if (ts != null && ts.ABCCode.Any())
{
ABCCodeRow backupRow = new ABCCodeRow();
var fields = backupRow.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public);
foreach (var field in fields)
{
if (field.PropertyType == typeof(System.Runtime.Serialization.ExtensionDataObject))
{
continue;
}
var fieldValue = field.GetValue(ts.ABCCode[0]);
field.SetValue(backupRow, fieldValue);
}
ts.ABCCode.Add(backupRow);
ts.ABCCode[0].CountFreq = 45;
ts.ABCCode[0].RowMod = "U";
abcCodeClient.Update(ref ts);
ts = null;
ts = abcCodeClient.GetByID("G");
if (ts != null && ts.ABCCode.Any())
{
Console.WriteLine("CountFreq = {0}", ts.ABCCode[0].CountFreq);
ts.ABCCode[0].RowMod = "D";
abcCodeClient.Update(ref ts);
try
{
ts = abcCodeClient.GetByID("G");
}
catch (FaultException<Epicor.AbcCodeSvc.EpicorFaultDetail> ex)
{
if (ex.Detail.ExceptionKindValue.Equals("RecordNotFound", StringComparison.InvariantCultureIgnoreCase))
{
Console.WriteLine("Record deleted.");
}
else
{
Console.WriteLine(ex.Message);
}
}
}
}
}
if (sessionId != Guid.Empty)
{
sessionModClient.Logout();
}
Console.ReadLine();
}

Your code worked fine for me after I changed the config to suit my environment.
It looks like you followed the step 7 on page 15 of the Epicor10_techrefWCFServices_101400.pdf guide and correctly created a new instance of the SessionModSvc after Login(). However, if you copied the full code for the Main method from page 18 then this is missing and I can replicate your issue.
Check the code that you are compiling has created a new instance of the SessionModSvc after the call to .Login().

See my other answer, but as an alternative you may want to consider this method of accessing the services.
If you have access to the client DLLs then this code might be easier:
static void Main(string[] args)
{
// Hard-coded LogOn method
// Reference: Ice.Core.Session.dll
Ice.Core.Session session = new Ice.Core.Session("manager", "manager", "net.tcp://AppServer/MyCustomerAppserver-99999-10.0.700.2");
// References: Epicor.ServiceModel.dll, Erp.Contracts.BO.ABCCode.dll
var abcCodeBO = Ice.Lib.Framework.WCFServiceSupport.CreateImpl<Erp.Proxy.BO.ABCCodeImpl>(session, Erp.Proxy.BO.ABCCodeImpl.UriPath);
// Call the BO methods
var ds = abcCodeBO.GetByID("A");
var row = ds.ABCCode[0];
System.Console.WriteLine("CountFreq is {0}", row.CountFreq);
System.Console.ReadKey();
}
Just add references to:
Ice.Core.Session.dll
Epicor.ServiceModel.dll
Erp.Contracts.BO.ABCCode.dll

WebConsumer.ProcessUserAuthorization returns null

I use DotNetOpenAuth.
So.. I am getting looking good response which has state Authenticated.
That is fine.
Now I want to get user profile info but always getting NULL.
Here is the code.
private ServiceProviderDescription GetServiceDescription()
{
string ValidateTokenEndPoint = ConfigurationManager.AppSettings["identityOAuthValidateTokenEndPointUrl"];
string ValidateAuthorizationHeaderEndPoint = ConfigurationManager.AppSettings["identityOAuthValidateAuthorizationHeaderEndPointUrl"];
string AccessTokenEndPoint = ConfigurationManager.AppSettings["identityOAuthAccessTokenURL"];
bool UseVersion10A = Convert.ToBoolean(ConfigurationManager.AppSettings["identityOAuthUseVersion10a"]);
string RequestTokenStr = ConfigurationManager.AppSettings["identityOAuthRequestTokenURL"];
string UserAuthStr = ConfigurationManager.AppSettings["identityOAuthAuthorizeUserURL"];
string AccessTokenStr = ConfigurationManager.AppSettings["identityOAuthAccessTokenURL"];
string InvalidateTokenStr = ConfigurationManager.AppSettings["identityOAuthRequestInvalidateTokenURL"];
return new ServiceProviderDescription
{
AccessTokenEndpoint = new MessageReceivingEndpoint(AccessTokenStr, HttpDeliveryMethods.PostRequest),
RequestTokenEndpoint = new MessageReceivingEndpoint(RequestTokenStr, HttpDeliveryMethods.PostRequest),
UserAuthorizationEndpoint = new MessageReceivingEndpoint(UserAuthStr, HttpDeliveryMethods.PostRequest),
TamperProtectionElements = new ITamperProtectionChannelBindingElement[] { new HmacSha1SigningBindingElement() },
ProtocolVersion = DotNetOpenAuth.OAuth.ProtocolVersion.V10a
};
}
void GetUserProfile()
{
var tokenManager = TokenManagerFactory.GetTokenManager(TokenManagerType.InMemoryTokenManager);
tokenManager.ConsumerKey = ConfigurationManager.AppSettings["identityOAuthConsumerKey"];
tokenManager.ConsumerSecret = ConfigurationManager.AppSettings["identityOAuthConsumerSecret"];
var serviceDescription = GetServiceDescription();
var consumer = new WebConsumer(serviceDescription, tokenManager);
var result = consumer.ProcessUserAuthorization(response);
if (result != null) // It is always null
{
}
Well I checked 10 times and I am pretty sure that all URLs to create ServiceProviderDescription are correct.
Any clue?

Well
finally check your web.config app keys
add key="identityOAuthConsumerKey" value="put here correct data!!!"
add key="identityOAuthConsumerSecret" value="put here correct data!!!"
and if you use hosts file you have to put correct sitename as well
127.0.0.1 site1.host1.com

Validate Google Account using WebClient

I am trying validate Google Account using WebClient.
class PostDataBuilder
{
private static Dictionary<string, string>
ToPropertyDictionary(object data)
{
var values = data
.GetType()
.GetProperties()
.Select(x => new {
Key = x.Name,
Value = x.GetValue(data, null)
});
var result = new Dictionary<string, string>();
foreach (var item in values)
result.Add(item.Key, item.Value.ToString());
return result;
}
public static string Build(object data)
{
string result = "";
var dict = ToPropertyDictionary(data);
foreach (var name in dict.Keys)
result += name + "=" + HttpUtility.UrlEncode(dict[name]) + "&";
return result.Substring(0, result.Length - 1);
}
}
class Program
{
static void Main(string[] args)
{
string postText = PostDataBuilder.Build(
new
{
dsh = "-1903339439726094408",
GALX = "-Ggrv6gqusk",
timeStmp = "",
secTok = "",
Email = "WrongEmail#gmail.com",
Passwd = "WrongPassword",
signIn = "?????",
rmShown = "1"
});
byte[] data = Encoding.UTF8.GetBytes(postText);
WebClient wc = new WebClient();
byte[] result = wc.UploadData(
new Uri("https://accounts.google.com/ServiceLoginAuth"),
"POST", data);
string resultText = Encoding.UTF8.GetString(result);
}
}
ResultText variable has setted , even if data is correct. What's wrong?

You shouldn't ever screw around with login services such as the Google one or try to fake a browser. In the end it could be considered attempt hacking or whatever and it's very likely to break the next time they update their page (or even just because your IP changes).
Instead use OpenID or OAuth as described here.