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47 lines
1.5 KiB
Markdown
47 lines
1.5 KiB
Markdown
---
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id: error_handling
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title: Error Handling
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---
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API calls can fail when input data is malformed or the server detects issues with the request. As an example, the following request obviously fails:
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```csharp
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var track = await spotify.Tracks.Get("NotExistingTrackId");
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Console.WriteLine(track.Name);
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```
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When a request fails, an `APIException` is thrown. Specific errors may throw a child exception of `APIException`.
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## APIException
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A very general API error. The message is parsed from the API response's JSON body and the response is available as a public property.
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```csharp
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try {
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var track = await spotify.Tracks.Get("NotExistingTrackId");
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} catch(APIException e) {
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// Prints: invalid id
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Console.WriteLine(e.Message);
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// Prints: BadRequest
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Console.WriteLine(e.Response?.StatusCode);
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}
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```
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## APIUnauthorizedException
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Provides the same properties as `APIException` and occurs when the access token is expired or not provided. Notice that an access token has to be included in **every** request. Spotify does not allow unauthorized API access.
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## APITooManyRequestsException
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Provides the same properties as `APIException` and occurs when too many requests has been sent by your application. It also provides the property `TimeSpan RetryAfter`, which maps to the received `Retry-After` header.
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```csharp
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try {
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// call it very often?
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var track = await spotify.Tracks.Get("1s6ux0lNiTziSrd7iUAADH");
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} catch(APITooManyRequestsException e) {
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// Prints: seconds to wait, often 1 or 2
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Console.WriteLine(e.RetryAfter);
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}
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```
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