I am new to windows 8. I want to call api url and the response will be return in terms of json. My Question is how to call below api url in my windows 8 code with c#.
API URL: http://scwin8dashboard.cloudapp.net/shell/~/analytics/reports/reports.ashx?fff=0&report=CampaignCategoriesOverview&languages=&sites=&startDate=20080101&endDate=20121114&addLastModified=true
please help
var uri = "http://scwin8dashboard.cloudapp.net/shell/~/analytics/reports/reports.ashx?fff=0&report=CampaignCategoriesOverview&languages=&sites=&startDate=20080101&endDate=20121114&addLastModified=true";
var client = new HttpClient();
var response = await client.GetStringAsync(uri);
var parser = JsonObject.Parse(response);
For more informations about Http requests see this page.
For JSON related classes see the Windows.Data.Json namespace.
Related
I have several RESTful services that working with each other. In one scenario I want to post some data from one service to another service and I want to attach some information in Header of the request. I saw several cases to do this and in the end I came up with this workaround:
var httpClient = new HttpClient();
httpClient.Timeout = TimeSpan.FromMinutes(3);
var httpRequestMessage = new HttpRequestMessage {
Method = HttpMethod.Post,
RequestUri = new Uri(service2Address),
Content = new StringContent(JsonConvert.SerializeObject(obj))
};
httpRequestMessage.Headers.Add("myCustomHeaderKey", "myCustomHeaderValue");
var response = await httpClient.SendAsync(httpRequestMessage);
var responseString = await response.Content.ReadAsStringAsync();
With these lines of code, a Post request sent, but in service2 when I want to get the headers from request, there is no sign of myCustomHeaderKey in headers collection. I inspect Request.Headers in Visual Studio Watch and even try to get custom header with Request.Headers["myCustomHeaderKey"]. So what's wrong here?
EDIT 1
This implementation in based on this tutorial.
I have developed code like yours. Have created Two Asp.net core 3.1 project with standart template. One service is starting localhost:44320 and other localhost:44300
localhost:44320/PostService wrote the your codes.
Then get this url with browser. localhost:44320/weatherforecast/IncomeService function is like below
Finally i put breakpoint to where get request header. Result is like below
There is a not a problem. Maybe you use change request header middleware. Or if you are using something like nginx. this problem maybe nginx configuration.
I am working on (built-in web apis) provided by whatsapp business api. As a newbie in .net core razor pages and web apis. I want to know how can I get access to the body of the post request api. Take an example below for sending a message
Post: {URL}/v1/messages
Request Body:
"to": "",
"message_type:"
"message_text:"
"recipient_type: "individual | group""
How can I make a call to the builtin api and access the body parts of it?
Ofcourse, we as a developer can use postman for checking the working of api. But take this as a client and for the client we have some fields like
To:
Message:
How can take these fields and put it into the api call body and then when the user click on the send, the api call works and shows whatever we want to show the user for example a model with send successfully etc.
You can call the API using HttpClient.
Add the URL in await client.PostAsync() function. If you have authorization use client.DefaultRequestHeaders.Authorization otherwise omit it
string myContent = "";
string myJson = <JsonQuery>;
using (HttpClient client = new HttpClient())
{
// If any authorization available
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", tokenLabel.Text.Trim());
using (HttpResponseMessage response = await client.PostAsync("https:url", new StringContent(myJson, Encoding.UTF8, "application/json")))
{
using (HttpContent content = response.Content)
{
myContent = await content.ReadAsStringAsync();
}
}
}
Update
Content
string myJson = "{\"subject\": }";
URL
using (HttpResponseMessage response = await client.PostAsync("{{URL}}/v1/groups", new StringContent(myJson, Encoding.UTF8, "application/json")))
Header
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", "");
I am trying to consume SharePoint 2013 REST services from a Desktop application ( cross-platform, cross-os ). Application is basically a HTML page in application view.
Is there a simple way I can authenticate my calls using HTTP methods ?
Yes, you can get authenticated and receive a digest via a REST call.
string url = "http://Your.SP.Site";
HttpClient client = new HttpClient(new HttpClientHandler() { UseDefaultCredentials = true });
client.BaseAddress = new System.Uri(url);
string cmd = "_api/contextinfo";
client.DefaultRequestHeaders.Add("Accept", "application/json;odata=verbose");
client.DefaultRequestHeaders.Add("ContentType", "application/json");
client.DefaultRequestHeaders.Add("ContentLength", "0");
StringContent httpContent = new StringContent("");
var response = client.PostAsync(cmd, httpContent).Result;
if (response.IsSuccessStatusCode)
{
string content = response.Content.ReadAsStringAsync().Result;
JsonObject val = JsonValue.Parse(content).GetObject();
JsonObject d = val.GetNamedObject("d");
JsonObject wi = d.GetNamedObject("GetContextWebInformation");
retVal = wi.GetNamedString("FormDigestValue");
}
The above example shows how to retrieve the digest in C# with the HttpClient. This string needs to be passed as a header to all of the other rest calls you make to carry forward the authentication. You can create a credential by passing in a username and password if needed.
I have more examples here:
https://arcandotnet.wordpress.com/2015/04/01/sharepoint-2013-rest-services-using-c-and-the-httpclient-for-windows-store-apps/
You can do these calls in JavaScript as well and Microsoft has a lot of documentation on that. There is also .NET library, Microsoft.SharePoint.Client.DLL (CSOM) that simplifies this type of coding but you must have the library installed on the client.
I'm trying to exchange my authorization code for a token with the Google OAuth2 API for my Windows 8 app, but I keep getting HTTP 400 errors.
This is how I perform the request (simplified):
var url = "https://accounts.google.com/o/oauth2/token";
var body = "code=4/LEXF1iAVRZvfCfdQg9r1aFqoYDgV&client_id=904019870963.apps.googleusercontent.com&client_secret=[removed]&redirect_uri=urn:ietf:wg:oauth:2.0:oob&grant_type=authorization_code";
HttpClient httpClient = new HttpClient();
HttpResponseMessage response = await httpClient.PostAsync(new Uri(url), new StringContent(body));
response.EnsureSuccessStatusCode();
Visual Studio usually simply gives me a HTTP 400 bad request error, when I try the same thing in Fiddler I also get an HTTP 400 error, but with this as content:
21
{
"error" : "invalid_request"
}
0
I read all the documentation about Google OAuth, I searched on Google and StackOverflow for this issue, I tried changing all different sorts of things in my code (UrlEncode, etc.), I used the Google API Playground to see what kind of requests it performs and compared it with my own requests (couldn't find a difference except for the return URL, the auth code and the user-agent). No matter what I do, I just can't get this working, I've been stuck for hours already.
Can anyone help me out here?
Read the body content to get the error json you noticed in Fiddler.
HttpClient httpClient = new HttpClient();
var response = httpClient.PostAsync(new Uri(url), new StringContent(body)).Result;
var content = response.Content.ReadAsStringAsync().Result;
content now holds :
{
"error" : "invalid_request"
}
You could project the error in an object, by specifing your error type like: response.Content.ReadAsAsync().Result
For the invalid request part, you should play with UrlEncode. I know you say you tried it, but applying it at the right spots really solves your problem.
var body = "code="+WebUtility.UrlEncode("4/LEXF1iAVRZvfCfdQg9r1aFqoYDgV")+
"&redirect_uri="+WebUtility.UrlEncode("https://yoursite...")+
"&client_id=904019870963.apps.googleusercontent.com" +
"&scope=" +
"&client_secret=********" +
"&grant_type=authorization_code";
HttpClient httpClient = new HttpClient();
var response = httpClient.PostAsync(new Uri(endpoint),
new StringContent(body, Encoding.UTF8, "application/x-www-form-urlencoded")).Result;
This is the code that works for me. Should work for you also.
I'm new to ampscript, I would like to expose a restful service which will respond with json body. I have tried multiple sites and everywhere finding answered to hit an endpoint and read response, but not able to find ways to create and expose a restful service.
The following code will make an HTTPGet request with a header and set the response as an AMPscript variable:
<script runat="server">
Platform.Load("Core","1");
var url = "https://httpbin.org/anything";
var headerNames = ["Accept"];
var headerValues = ["application/json"];
var response = HTTP.Get(url, headerNames, headerValues);
Variable.SetValue("response",response.Content);
</script>
Response: %%=v(#response)=%%
did I understand true?