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PalaBeaveR
PalaBeaveR

Reputation: 181

How to fix "The SSL connection could not be established, see inner exception." when trying to download osu! avatar

I want to download osu! avatars to use them, but keep getting this error:

The SSL connection could not be established.

Inner exception is:

System.Net.Http.HttpRequestException: The SSL connection could not be established, see inner exception. ---> System.Security.Authentication.AuthenticationException: Authentication failed, see inner exception. ---> System.ComponentModel.Win32Exception: Получено непредвиденное сообщение или оно имеет неправильный формат

Example url: https://a.ppy.sh/10638551?1524507784.png

I tried using HttpClient and WebClient but without any success. 

using(HttpClient client = new HttpClient())
{
     var resp = await client.GetAsync("https://a.ppy.sh/10638551?1547998515.jpeg");
     var responseStr = await resp.Content.ReadAsStringAsync();
     File.WriteAllText("html/avatars/avatar.jpeg", responseStr);
}

Upvotes: 15

Views: 139724

Answers (5)

Gunasekaran sengodan
Gunasekaran sengodan

Reputation: 1

I faced similar Issue, now I am able to populate schema and rebuild indexes. Note: Make sure IIS is Stopped and all Solr services in services stopped. <services.msc>

steps 1: Did switch to Linux container in docker and switched back to previous. step 2: Executed down.ps1 and below list in Windows Powershell in Admin Mode

Stop-Service docker
Stop-service hns
Start-service hns
Start-Service docker
docker network prune

step 3: then Execute docker/clean.ps1 step 4: Execute \init.ps1 step 5: Execute docker-compose up -d and up.ps1.

Not sure the flow consideration on actual steps but it started populating and building index for my setup.

Upvotes: 0

Rory Becker
Rory Becker

Reputation: 15701

I believe we may have solved this exact issue (or one very similar)

In our case we got the same exception, but strangely from only a single machine.

After some investigation, we used this software (https://www.nartac.com/Products/IISCrypto/Download) to determine that there were no shared cipher suites between our box and the one we were attempting to contact.

We used the software to enable a supported suite on our box and rebooted.

Once back up and running, everything worked fine.

Ultimately this was a machine configuration issue and not a coding one.

[Note: I have no affiliation with this software or it's company, and I'm sure other methods could be used to achieve this, but I know this worked one for us]

Upvotes: 2

SeveneduS
SeveneduS

Reputation: 49

Before use HttpClient you should setup HttpClientHandler;

var handler = new HttpClientHandler();

handler.ServerCertificateCustomValidationCallback += 
                (sender, certificate, chain, errors) =>
                {
                    return true;
                };

only than your HttpClient code. Must Work for .net Core 3.*

Upvotes: 3

PalaBeaveR
PalaBeaveR

Reputation: 181

Answer:

After some time i figured that the library i was using was a bit bad. And after that i discovered Selenium.

With that in mind i started using Selenium WebDriver and figured that i can take a screenshot of a page i needed, then i cropped that image and i got what i needed.
So theres no need to continue this issue.

Upvotes: -2

Diego Mauricio Guerrero
Diego Mauricio Guerrero

Reputation: 151

I found te solution this blog helped me

ServicePointManager.ServerCertificateValidationCallback += (sender, certificate, chain, errors) =>
{
    // local dev, just approve all certs
    if (development) return true;
    return errors == SslPolicyErrors.None ;
};

https://www.khalidabuhakmeh.com/validate-ssl-certificate-with-servicepointmanager

Upvotes: 6

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