Newtonsoft.Json.JsonReaderException occurred

[nskiro]

Hello Zaczero,

Thank you for nice library, but I got an error. You can see my code below:

var captcha = new _2Captcha(<my_API_key>);
KeyValuePair<string, string>[] options = new KeyValuePair<string, string>[]
{
// I have to add this because my language isn't English
new KeyValuePair<string, string>("textinstructions","Select icons in the order required")
};
var clickCaptcha = await captcha.SolveClickCaptcha(ImageToBase64String("captcha.png"), FileType.Png, "TASK", options);

The captcha has been solved (I checked in my dashboard at 2captcha.com). But Newtonsoft.Json.JsonReaderException occurred. Error message is

{"Unexpected character encountered while parsing value: [. Path 'request', line 1, position 23."}

I see in VS , the return object is {Success: false, Response: null}
Please help me! Thank you very much.

[Zaczero]

I think it may have to do something with a KeyValuePair array being used instead of a Dictionary.

I have had some problems with that in the past. A fix should come really soon. Thanks for reporting!

[nskiro]

I think the problem is occurred when parsing final response from 2captcha. In document of 2captcha, they write:

By default answers are returned as plain text like: OK|Your answer. But answer can also be returned as JSON {"status":1,"request":"TEXT"} if json parameter is used.

You can see the request property in JSON response, it does appear in error message.

Edit: I remove KeyValuePair array and this exception still occurred

[nskiro]

Hello Zaczero,

Most likely the problem occurs when the final return string contains an array of coordinates, but the type of request variable is string.

This is return object:

{
"status": 1,
"request": [
{
"x": "150",
"y": "114"
},
{
"x": "126",
"y": "183"
},
{
"x": "86",
"y": "191"
},
{
"x": "55",
"y": "69"
}
]
}

[Zaczero]

Fixed in the latest release 1.10

After retrieving the result and checking for .Success you may now use one of the following properties:

• .ResponseCoordinates which will return an array of X-Y coordinates (it's a predefined structure/best for your use case)
• .ResponseJson which will return an unparsed JSON string (if you want to process it by yourself)
• .ResponseObject which will return a JToken which can be used to easily parse data to any format you wish (check out .ToObject<T>() method)