I'm using WCF to create some REST service.
One of the Rest Service method need to get byte array as parameter ( picture as byte array ) and return some object.
I run this service using IIS.
But this is not working.
The code that i wrote :
[ServiceContract]
public interface IPicService
{
[OperationContract, WebInvoke(Method="POST", UriTemplate = "GetPicReport/{imageName}")]
Report GetPicReport( string imageName, Stream image );
}
[ServiceBehavior( AddressFilterMode = AddressFilterMode.Any )]
public class PicService: IPicService
{
public Report GetPicReport( string imageName, Stream image )
{
return new Report ();
}
}
I checking this code using explorer - but i get an error about missing parameter ( the image stream )
How can i test it ?
I can't use the WCF Test Client - so i wrote simple application that create http call - and this method return error 404 ( server not found )
Can you try the below code:
var request = WebRequest.Create(string.Concat(serviceUrl, resourceUrl)) as HttpWebRequest;
if (request != null)
{
request.ContentType = "text/xml";
request.Method = method;
}
//var objContent = HttpContentExtensions.CreateDataContract(requestBody);
if(method == "POST" && requestBody != null)
{
//byte[] requestBodyBytes = ToByteArrayUsingXmlSer(requestBody, "http://schemas.datacontract.org/2004/07/XMLService");
byte[] requestBodyBytes = ToByteArrayUsingDataContractSer(requestBody);
request.ContentLength = requestBodyBytes.Length;
using (Stream postStream = request.GetRequestStream())
postStream.Write(requestBodyBytes, 0, requestBodyBytes.Length);
//request.Timeout = 60000;
}
if (request != null)
{
var response = request.GetResponse() as HttpWebResponse;
if(response.StatusCode == HttpStatusCode.OK)
{
Stream responseStream = response.GetResponseStream();
if (responseStream != null)
{
var reader = new StreamReader(responseStream);
responseMessage = reader.ReadToEnd();
}
}
else
{
responseMessage = response.StatusDescription;
}
}
The post here shows how to implement a service just like yours, along with a test client (using HttpWebRequest). Another thing you can do is to enable tracing at the server, it may tell you why the request is being rejected.
Related
Can someone please help me to fix this Issue. I am not able to debug from where it is going wrong. Basically I have created a WCF Rest API WebService using WCF Relay in Azure to have hybrid connection between on-premise and Azure. Also if I am ignoring any certificate validation, that endpoint is for on-premise as it is self-signed certificate but when making API call, I am using the base64 encoded public key provided by WCF Relay when publishing it in Azure.
WCF Contract And Implementation:
Contract Interface
Implementation
I am successfully able to get the "validationToken" in the WCF service and also returning the same validationToken immediately below 5 seconds. After returning, it always error out showing this message.
Postman Client For Sending HTTP Request
Error Response and no subscription created
EDIT
WCF Contract
[OperationContract]
[WebInvoke(Method = "POST", UriTemplate = "webhookForConservation?validationToken={validationToken}",
BodyStyle = WebMessageBodyStyle.Bare)]
string webhookForConservation(WebhookPayload data, string validationToken);
WCF Implementation:
1st approach to return 200 OK status code:
public string webhookForConservation(WebhookPayload data, string validationToken = "")
{
ServicePointManager.ServerCertificateValidationCallback = (sender, cert, chain, sslPolicyErrors) => true;
var client = new HttpClient();
client.DefaultRequestHeaders.Add("Accept", "text/plain");
client.DefaultRequestHeaders.TryAddWithoutValidation("Content-Type", "application/json");
HttpResponseMessage response = null;
WebOperationContext ctx = WebOperationContext.Current;
if (validationToken != null && validationToken != "")
{
response = client.PostAsync("http://localhost:8080/conversationWebHook/conversationSubscription?validationToken=" + validationToken, null).Result;
var apiContent = response.Content.ReadAsStringAsync().Result;
ctx.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.OK;
ctx.OutgoingResponse.ContentType = "text/plain";
return apiContent;
}
else
{
StringContent strContent = new StringContent(DataContractJsonSerializerHelper.SerializeJson(data));
strContent.Headers.ContentType = MediaTypeHeaderValue.Parse("application/json");
response = client.PostAsync("http://localhost:8080/conversationWebHook/conversationSubscription", strContent).Result;
}
var result = (response != null) ? response.Content.ReadAsStringAsync().Result : "";
ctx.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.OK;
return result;
}
2nd Approach to return 200 status code:
public WebFaultException<string> webhookForConservation(WebhookPayload data, string validationToken="")
{
ServicePointManager.ServerCertificateValidationCallback = (sender, cert, chain, sslPolicyErrors) => true;
var client = new HttpClient();
client.DefaultRequestHeaders.Add("Accept", "text/plain");
client.DefaultRequestHeaders.TryAddWithoutValidation("Content-Type", "application/json");
HttpResponseMessage response = null;
if (validationToken != null && validationToken != "")
{
response = client.PostAsync("http://localhost:8080/conversationWebHook/conversationSubscription?validationToken=" + validationToken, null).Result;
var apiContent = response.Content.ReadAsStringAsync().Result;
return new WebFaultException<string>(apiContent, HttpStatusCode.OK);
}
else
{
StringContent strContent = new StringContent(DataContractJsonSerializerHelper.SerializeJson(data));
strContent.Headers.ContentType = MediaTypeHeaderValue.Parse("application/json");
response = client.PostAsync("http://localhost:8080/conversationWebHook/conversationSubscription", strContent).Result;
}
var result = (response != null) ? response.Content.ReadAsStringAsync().Result : "";
return new WebFaultException<string>(result, HttpStatusCode.OK); ;
}
Same error seen after returning 200 OK response code from WCF Service
Calling Relay WCF API directly with Postman:
Headers:
Thank you in advance for all the help.
Two problems were preventing the WCF relay to work properly:
The relay wasn't setting the response content type to text/plain, this was fixed with ctx.OutgoingResponse.ContentType = "text/plain"
The relay was adding an XML wrapper to the required response body, this was addressed by changing the return value to Stream
I need to create a procedure in SQL server that takes a web URL of an image and converts it to VARBINARY, and after that: store in a column called "personqr_Image" in table "tblPersons".
I created a procedure "getPersonQrCode" that returns a URL of a unique QR code (450x450 image), and using that URL I need to convert it to VARBINARY data type in order to store it in my SQL DB.
Unfortunately I haven't really found a solution online, maybe because I am not very familiar with the subject.
You can't do this purely in TSQL, as it doesn't have any functions for browsing the web and handling http requests and responses. If you have to do this IN SQL Server, you'll need to write a CLR procedure.
Here is a CLR function that will allow you to submit HTTP requests
public class RestClient
{
[SqlFunction(DataAccess = DataAccessKind.Read)]
public static string Submit(string url, string data, string contentType, string
method = "POST",
string httpHeaderCredentials = "")
{
try
{
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls |
SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;
var request = (HttpWebRequest) WebRequest.Create(url);
//Add header credentials if required
if (!string.IsNullOrEmpty(httpHeaderCredentials))
{
request.Headers.Add("Authorization: " + httpHeaderCredentials);
}
request.ContentType = contentType;
request.Method = method;
if (request.Method == "PATCH")
{
//http://stackoverflow.com/questions/31043195/rest-api-patch-request
request.ServicePoint.Expect100Continue = false;
}
if (method == "POST" || method == "PATCH")
{
using (var streamWriter = new StreamWriter(request.GetRequestStream()))
{
streamWriter.Write(data);
streamWriter.Flush();
streamWriter.Close();
}
}
var httpResponse = request.GetResponse();
using (var responseStream = httpResponse.GetResponseStream())
{
if (responseStream != null)
{
using (var reader = new StreamReader(responseStream))
{
return reader.ReadToEnd().Replace("\n", string.Empty);
}
}
}
}
catch (Exception ex)
{
if (SqlContext.Pipe != null)
{
SqlContext.Pipe.Send(ex.Message);
}
}
return "";
}
I want to pass array of byte to WCF service from my windows phone app.The url is like below
"http:/serviceurl/Service1.svc/saverecord3?firstarray="
How can i do this?
Here a part of my code, which I am using to send post data to my server
HttpWebRequest req = (HttpWebRequest)WebRequest.Create("http:/serviceurl/Service1.svc/saverecord3");
req.Method = "POST";
req.ContentType = "text/xml; charset=utf-8"; //if your data is different, use a content type accordingly
string postData = #"firstarray=thedatatosend";
int length = arrayData.Length;
// Convert the string into a byte array.
byte[] byteArray = Encoding.UTF8.GetBytes(arrayData);
req.Headers[HttpRequestHeader.ContentLength] = byteArray.Length.ToString();
req.BeginGetRequestStream(ar =>
{
using (var requestStream = req.EndGetRequestStream(ar))
{
// Write the body of your request here
requestStream.Write(byteArray, 0, length);
}
req.BeginGetResponse(a =>
{
try
{
var response = req.EndGetResponse(a);
var responseStream = response.GetResponseStream();
using (var streamRead = new StreamReader(responseStream))
{
// Get the response message here
string responseString = streamRead.ReadToEnd();
//Do whatever you want here, with the response
}
}
catch (Exception e)
{
}
}, null);
}, null);
Saving data in windows phone received from WCF/web service .
The response may be received after sometime so how to handle this situation.
Saving data is no problem but How to handel if data is received late
You can use this code (show the code from my project):
public void sendPost(string postData, Action<MyResponse, Exception> callback, CreateResponse creater)
{
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(UrlRequest);
webRequest.Method = "POST";
webRequest.ContentType = "application/x-www-form-urlencoded";
webRequest.Accept = "application/json";
webRequest.AllowAutoRedirect = true;
webRequest.BeginGetRequestStream(new AsyncCallback(getRequestStreamCallback), new Request()
{
HttpRequest = webRequest,
PostData = postData,
Url = UrlRequest,
CallBack = callback,
Creater = creater
});
}
private void getRequestStreamCallback(IAsyncResult asynchronousResult)
{
var request = (Request)asynchronousResult.AsyncState;
// End the stream request operation
Stream postStream = request.HttpRequest.EndGetRequestStream(asynchronousResult);
byte[] byteArray = Encoding.UTF8.GetBytes(request.PostData);
// Add the post data to the web request
postStream.Write(byteArray, 0, byteArray.Length);
postStream.Close();
// Start the web request
request.HttpRequest.BeginGetResponse(new AsyncCallback(getResponseCallback), request);
}
private void getResponseCallback(IAsyncResult asynchronousResult)
{
var request = (Request)asynchronousResult.AsyncState;
try
{
HttpWebResponse response;
// End the get response operation
response = (HttpWebResponse)request.HttpRequest.EndGetResponse(asynchronousResult);
Stream streamResponse = response.GetResponseStream();
StreamReader streamReader = new StreamReader(streamResponse);
var myResponse = streamReader.ReadToEnd();
streamResponse.Close();
streamReader.Close();
response.Close();
MyResponse response_obj = request.Creater.CreateResponseObj();
using (MemoryStream stream = new MemoryStream(Encoding.Unicode.GetBytes(myResponse)))
{
DataContractJsonSerializer serializer = new DataContractJsonSerializer(response_obj.GetType());
response_obj = (GYResponse)serializer.ReadObject(stream);
if (request.CallBack != null)
{
request.CallBack.Invoke(response_obj, null);
}
}
}
catch (WebException e)
{
if (request.CallBack != null)
{
request.CallBack.Invoke(null, e);
}
}
}
public void getInfo(string uid, Action<MyResponse, Exception> callback)
{
CreateResponse creater = new CreateResponseGetInfo();
string model = "User";
string method = "getInfo";
Params parametrs = new Params();
parametrs.Uid = uid;
//create yor request
string request = getRequestString(model, method, parametrs, Atoken);
sendPost(request, callback, creater);
}
So, you call method, which send request to web service postRequester.getInfo(uid, ResponseHandler) and use delegate for processing result.
private void ResponseHandler(MyResponse result, Exception error)
{
if (error != null)
{
string err = error.Message;
return;
}
else
{
var infoResponse = result as ResponseGetInfo;
if (infoResponse != null)
{
//result processing..
}
}
}
All the web requests you make in a Windows Phone app are Asynchronous. That means, you make a web request from your app and attach a handler to handle the response when it comes. In the response handler, you will have to take care of the response and do whatever you want with it.
Check this link Using WebClient and HttpWebRequest
I am trying to consume wcf restful service. The code is as follows:
private static string SendRequest(string uri, string method, string contentType, string body)
{
string responseBody = null;
HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(uri);
req.Method = method;
if (!String.IsNullOrEmpty(contentType))
{
req.ContentType = contentType;
}
if (body != null)
{
byte[] bodyBytes = Encoding.UTF8.GetBytes(body);
req.GetRequestStream().Write(bodyBytes, 0, bodyBytes.Length);
req.GetRequestStream().Close();
}
req.Accept = "*/*";
HttpWebResponse resp;
resp = (HttpWebResponse)req.GetResponse();
return responseBody;
}
Now the issue is, sometimes it works fine and sometimes i get the error
"the remote server returned an error 403 forbidden."
I cannot figure out why it fails. Any idea???