I have an .net core WEB API method that needs to call another external API (java) which expects .zip file. When try to access the external API via Postman by attaching the file, it is working fine (getting expected response). However when i pass the same parameters via my WEB API code, it is throwing 403-Forbidden error.
Please let me know if i am missing anything....
Thanks in advance!!!
request-header
request-body-file-attached
response-403-error
API code: for connecting to api:
Dictionary<string, string> parameters = new Dictionary<string, string>();
parameters.Add("pane", "forward");
parameters.Add("forward_path", "/store/execute");
parameters.Add("csrf", "1996fe6b2d0c97a8a0db725a10432d83");
parameters.Add("data_format", "binary");
newContent = new FormUrlEncodedContent(parameters);
MultipartFormDataContent form = new MultipartFormDataContent();
HttpContent con;// = new StringContent("file_name");
//form.Add(con, "file_name");
form.Add(newContent);
var str = new FileStream("D:\\dummy\\xmlstore.zip", FileMode.Open);
con = new StreamContent(str);
con.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")
{
Name = "file_name",
FileName = "xmlstore.zip"
};
con.Headers.ContentType = new MediaTypeHeaderValue("application/zip");
form.Add(con);
client.DefaultRequestHeaders.Add("Cookie", "JSESSIONID=05DEB277E294CBF73288F2E24682C7EE;");
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("text/html"));
client.DefaultRequestHeaders.AcceptEncoding.Add(new StringWithQualityHeaderValue("gzip"));
client.DefaultRequestHeaders.AcceptEncoding.Add(new StringWithQualityHeaderValue("deflate"));
client.DefaultRequestHeaders.AcceptEncoding.Add(new StringWithQualityHeaderValue("br"));
client.DefaultRequestHeaders.UserAgent.Add(new ProductInfoHeaderValue("user-agent", "1"));
var resp = client.PostAsync("java-api", con).Result;
Related
I need to create a Web API "wrapper" that is consumed by a client, but in this Web API Service, I actually need to create a POST request to a different REST API service that is running on the same IIS server that does some work and returns StringContent that I pass back to the client via a JSON HttpResponse. Is this possible? Instead of the client making direct calls to the actual REST API and returning data they don't need/want, they would call my Web API service and I would only return them the required data. I know this was done in the old SOAP WSDL model.
If I need the client to pass in a couple parameters that are required for my POST request, would I be having the client use a GET or POST request?
This is an sample code i used call API inside another API using POST method.
using (var client = new HttpClient())
{
string query;
using (var content = new FormUrlEncodedContent(new Dictionary<string, string>()
{
{"username", username},
{"password", password}
}))
{
query = content.ReadAsStringAsync().Result;
}
var model = new{
username = txtUsername.Text,
password = txtPassword.Text
};
var json = JsonConvert.SerializeObject(model);
var user = new StringContent(json, Encoding.UTF8, "application/json");
using (var response = await client.PostAsync(#"http://localhost/dataagent/api/user/authenticate", user))
{
if (response.IsSuccessStatusCode)
{
var result = await response.Content.ReadAsStringAsync();
// handle result here
}
}
}
I am implementing a Xamarin Form mobile app to allow post photo to Drupal using service module node resources. http://xxxx.com/{endpoint}/node/4/attach_file
i able to post from POSTMAN with
I tried to implement with c# HttpClient but keep getting response like "401 :Missing required argument field_name"
Please help on my code:
var httpClient = new HttpClient(new NativeMessageHandler());
httpClient.Timeout.Add(new TimeSpan(0, 0, 30));
httpClient.BaseAddress = new Uri(BaseAddress);
var content = new MultipartFormDataContent();
var streamContent = new StreamContent(g_media.GetStream());
streamContent.Headers.ContentDisposition = ContentDispositionHeaderValue.Parse("form-data");
streamContent.Headers.ContentDisposition.Parameters.Add(new NameValueHeaderValue("field_name", "field_receipt_image"));
content.Add(streamContent,"files[file]");
var response = await httpClient.PostAsync("node/4/attach_file", content);
response.EnsureSuccessStatusCode();
I had the same issue and used RestSharp to resolve it. Here is the code I used to upload a file to Drupal:
var restClient = new RestClient("http:XXXXXX/attach_file");
var request = new RestRequest(Method.POST);
request.AddFile("files[file]", fileName);
request.AddParameter("field_name", field);
IRestResponse response = restClient.Execute(request);
I have an ASP.NET MVC 5 website - in C# client code I am using HttpClient.PutAsJsonAsync(path, myObject) fine to call a Json API (the API is also mine created in Web API).
client.BaseAddress = new Uri("http://mydomain");
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
var response = await client.PutAsJsonAsync("api/something", myObj);
I would like to do the same with a Delete verb. However client.DeleteAsync does not allow an object to be passed in the body. (I would like to record the reason for deletion alongside the Id of the item to delete in the URI).
Is there a way to do this?
You'll have to give up a little in terms of convenience since the higher-level DeleteAsync doesn't support a body, but it's still pretty straightforward to do it the "long way":
var request = new HttpRequestMessage {
Method = HttpMethod.Delete,
RequestUri = new Uri("http://mydomain/api/something"),
Content = new StringContent(JsonConvert.SerializeObject(myObj), Encoding.UTF8, "application/json")
};
var response = await client.SendAsync(request);
We are trying to upload image to Twitter via silverlight code in WP7. We are able to post the message but not the image.
We tried all including download of their library but not getting the hint.
In following link,
https://dev.twitter.com/docs/api/1/post/statuses/update_with_media
there is one point which we are not able to set.
"Unlike POST statuses/update, this method expects raw multipart data. Your POST request's Content-Type should be set to multipart/form-data with the media[] parameter "
I am not getting it how to put it.
Can anyone please guide me or provide sample for image upload?
If your photo is called LoadedPhoto, you could create a memory stream from it
MemoryStream ms = new MemoryStream();
LoadedPhoto.SaveJpeg(ms, LoadedPhoto.PixelWidth, LoadedPhoto.PixelHeight, 0, 100);
Create OAuthCredentials object according to the authentication details you have acquired
var credentials = new OAuthCredentials
{
Type = OAuthType.ProtectedResource,
SignatureMethod = OAuthSignatureMethod.HmacSha1,
ParameterHandling = OAuthParameterHandling.HttpAuthorizationHeader,
ConsumerKey = Common.TwitterSettings.ConsumerKey,
ConsumerSecret = Common.TwitterSettings.ConsumerKeySecret,
Token = file.AccessToken,
TokenSecret = file.AccessTokenSecret,
Version = "1.0"
};
Create a RestClient and a RestRequest
var restClient = new RestClient
{
Authority = "https://upload.twitter.com"
};
var restRequest = new RestRequest
{
Credentials = credentials,
Path = "/1/statuses/update_with_media.xml",
Method = Hammock.Web.WebMethod.Post
};
Set the stream position to 0
ms.Position = 0;
Add fields to RestRequest
restRequest.AddField("status", message);
restRequest.AddFile("media[]", "ScreenShot.png", ms, "image/jpeg");
And then begin request
restClient.BeginRequest(restRequest, callback);
callback is a callback method for the request.
Taken from my blog post, see there for more details if you're interested.
I am trying to create an event using the C# SDK. I am using the code from the following blog:
http://facebooksdk.blogspot.co.uk/2011/05/facebook-create-event.html
And I am using an image that I copied from an existing event on Facebook.
I am getting however the following error:
(OAuthException) (#324) Missing or invalid image file
Does anyone have an idea how to make it work?
Many thanks!
The code is as follows:
public string CreateEvent()
{
var fb = new FacebookWebClient();
Dictionary<string, object> createEventParameters = new Dictionary<string, object>();
createEventParameters.Add("name", "My birthday party )");
createEventParameters.Add("start_time", DateTime.Now.AddDays(2).ToUniversalTime().ToString(new CultureInfo("en-US")));
createEventParameters.Add("end_time", DateTime.Now.AddDays(2).AddHours(4).ToUniversalTime().ToString(new CultureInfo("en-US")));
createEventParameters.Add("owner", "Balaji Birajdar");
createEventParameters.Add("description", " ( a long description can be used here..)");
//Add the "venue" details for the event
JsonObject venueParameters = new JsonObject();
venueParameters.Add("street", "dggdfgg");
venueParameters.Add("city", "gdfgf");
venueParameters.Add("state", "gfgdfgfg");
venueParameters.Add("zip", "gfdgdfg");
venueParameters.Add("country", "gfdgfg");
venueParameters.Add("latitude", "100.0");
venueParameters.Add("longitude", "100.0");
createEventParameters.Add("venue", venueParameters);
createEventParameters.Add("privacy", "OPEN");
createEventParameters.Add("location", "fhdhdfghgh");
//Add the event logo image
//You can add the event logo too
FacebookMediaObject logo = new FacebookMediaObject()
{
ContentType = "image/jpeg",
FileName = #"C:\DevProjects\O2\o2PriorityFB\o2PriorityFB.Web\Images\logo.jpg"
};
logo.SetValue(System.IO.File.ReadAllBytes(logo.FileName));
createEventParameters["#file.jpg"] = logo;
JsonObject resul = fb.Post("/me/events", createEventParameters) as JsonObject;
return resul["id"].ToString();
}
You need to include a valid access token in the request. Also, I would recommend upgrading to V6 of the Facebook C# SDK. For the version you are using though you need to pass the access token into the constructor of FacebookWebClient as follows:
var fb = new FacebookWebClient("valid_facebook_access_token");