CODEWITHSUNDEEP
c#httpflurl
Ivan-Mark Debono
Ivan-Mark Debono

Reputation: 16300

NullReferenceException when make a PUT request using Flurl

I'm constructing a Url and making an PUT request using Flurl, as follows:

using (var client = new Url("myurl"))
    .ConfigureClient(c => c.HttpClientFactory = new CompressHttpClientFactory())
    .WithCookie(new System.Net.Cookie("name", "value", "/", "domain"))
{
    var content = new StringContent("json here", Encoding.UTF8, "application/json");
    var response = await client.PutAsync(content)
}

But I'm getting an exception when calling PutAsync:

System.NullReferenceException occurred HResult=0x80004003 Message=Object reference not set to an instance of an object. Source=Flurl.Http StackTrace: at Flurl.Http.FlurlClient.ReadResponseCookies(HttpResponseMessage response) at Flurl.Http.FlurlClient.d__28.MoveNext() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()

Should I use try / catch and ignore the exception?

Upvotes: 0

Views: 1197

Answers (1)

Todd Menier
Todd Menier

Reputation: 39319

I suspect that the actual HTTP call is failing to get a response, and Flurl is trying to read the cookies anyway without doing a null check on the response. This is a known bug and is fixed/ready for the 2.0 release. 2.0 is in prerelease right now and I recommend upgrading. It's stable for production use, I'm just not guaranteeing quite yet that the changes are set in stone.

Upvotes: 0

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