Failing with Status code 502 since Dec 4? about yahoofinanceapi

[BobMc98]

@kamoco My code now looks like this:

       public static async Task InitAsync(CancellationToken token = default)
       {
           if (_crumb != null)
           {
               return;
           }

           await _semaphore.WaitAsync(token).ConfigureAwait(false);
           try
           {
               const string userAgentKey = "User-Agent";
               const string userAgentValue = "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36";

               var response = await "https://login.yahoo.com"
                   .AllowHttpStatus("404")
                   .WithHeader(userAgentKey, userAgentValue)
                   .GetAsync()
                   .ConfigureAwait(false);

               if (response.Cookies.Count == 0)
               {
                   throw new Exception("Failed to obtain Yahoo auth cookie.");
               }
               else
               {
                   _cookie = response.Cookies.FirstOrDefault(c => c.Name == "A3");

[estebanf93]

me too, since since Dec. 4 too

[kamoco]

I am hitting the same too.

[emoreau99]

found a workaround that seems to work.

In the InitAsync method of the "internal static class YahooSession" class:

-on the line : var response = await "https://login.yahoo.com"
-replace login with fc
-replace the line "_cookie = response.Cookies[0];"
-with : _cookie = response.Cookies.FirstOrDefault(c => c.Name == "A3");

[kamoco]

Those changes did not work. The response here still throws 502. May be you have some other changes on machine that helped along with these 2 changes ?

var response = await "https://fc.yahoo.com"
.AllowHttpStatus("404")
.WithHeader(userAgentKey, userAgentValue)
.GetAsync()
.ConfigureAwait(false);

[BobMc98]

The workaround from @emoreau99 worked well for me, with the following clarification:

-replace login with fc

For me, I did the opposite. I had "fc.yahoo.com" on that line, and I replaced it with "login.yahoo.com". Everything worked then. The implication being that "fc.yahoo.com" is no longer responding.

[kamoco]

hmm I tried both and none of them worked.

[kamoco]

This worked for me:

change login to fc
Allow 502
replace the _cookie line - _cookie = response.Cookies.FirstOrDefault(c => c.Name == "A3");

var response = await "https://fc.yahoo.com"
.AllowHttpStatus("502")
.WithHeader(userAgentKey, userAgentValue)
.GetAsync()
.ConfigureAwait(false);

if (response.Cookies.Count == 0)
{
throw new Exception("Failed to obtain Yahoo auth cookie.");
}
else
{
//_cookie = response.Cookies[0];
_cookie = response.Cookies.FirstOrDefault(c => c.Name == "A3");

[reviloxx]

For me the request to "https://fc.yahoo.com" runs into a timeout and if I try "https://login.yahoo.com" I only get a cookie with name "AS". With this cookie the next request (_crumb = await "https://query1.finance.yahoo.com/v1/test/getcrumb") throws an error.

[irigopou]

Same as above. Location in Germany, just in case this matters.
Note I used _cookie = response.Cookies[0] as the above suggested FirstOrDefault fails.
The fetched _cookie has Name is "AS" and Value a very long string.
The exception message is:
"Call failed with status code 500 (Internal Server Error): GET https://query1.finance.yahoo.com/v1/test/getcrumb"

[reviloxx]

I missed the part with "Allow 502". With this change it works again. Thank you @kamoco !

This is how my method looks now:

public static async Task InitAsync(CancellationToken token = default)
{
    if (_crumb != null)
    {
        return;
    }

    await _semaphore.WaitAsync(token).ConfigureAwait(false);
    try
    {
        const string userAgentKey = "User-Agent";
        const string userAgentValue = "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36";

        var response = await "https://fc.yahoo.com/"
            .AllowHttpStatus("502")
            .WithHeader(userAgentKey, userAgentValue)
            .GetAsync()
            .ConfigureAwait(false);

        if (!response.Cookies.Any(c => c.Name == "A3"))
        {
            throw new Exception("Failed to obtain Yahoo auth cookie.");
        }
        else
        {
            _cookie = response.Cookies.FirstOrDefault(c => c.Name == "A3");

            _crumb = await "https://query1.finance.yahoo.com/v1/test/getcrumb"
                .WithCookie(_cookie.Name, _cookie.Value)
                .WithHeader(userAgentKey, userAgentValue)
                .GetAsync(token)
                .ReceiveString();

            if (string.IsNullOrEmpty(_crumb))
            {
                throw new Exception("Failed to retrieve Yahoo crumb.");
            }
        }
    }
    finally
    {
        _semaphore.Release();
    }
}

[irigopou]

Thanks mate! Changing to 502 worked for me too!
I noticed though that the invocation of the following takes long time to complete. About 30 secs. Any idea why this is happening?
I guess is some timeout setting. At least, it is invoked only once and afterwards the feeds are fetched without delay by using the discovered cookie.

var response = await "https://fc.yahoo.com"
.AllowHttpStatus("502")//works after 5.12.23
.WithHeader(userAgentKey, userAgentValue)
.GetAsync()
.ConfigureAwait(false);

[hbraasch]

Thank all, I had same problem and its now working again.

[sergemat]

Fixed with PRs #62 and #63.