Xamarin.Forms sending HttpClient GET or POST request to API with TLS 1.3

Question

Any idea what is the workaround on my App. My app works perfectly before when our server using TLS 1.2,After we upgraded to TLS 1.3, all HttpClient POST and GET Request are not working and get the exception

INNER EXCEPTION

Javax.Net.Ssl.SSLProtocolException: SSL handshake aborted: ssl=0xcb444f08: Failure in SSL library, usually a protocol error
error:1000042e:SSL routines:OPENSSL_internal:TLSV1_ALERT_PROTOCOL_VERSION (external/boringssl/src/ssl/tls_record.cc:592 0xcb172b48:0x00000001)
  --- End of managed Javax.Net.Ssl.SSLProtocolException stack trace ---
javax.net.ssl.SSLProtocolException: SSL handshake aborted: ssl=0xcb444f08: Failure in SSL library, usually a protocol error
error:1000042e:SSL routines:OPENSSL_internal:TLSV1_ALERT_PROTOCOL_VERSION (external/boringssl/src/ssl/tls_record.cc:592 0xcb172b48:0x00000001)
    at com.android.org.conscrypt.NativeCrypto.SSL_do_handshake(Native Method)
    at com.android.org.conscrypt.NativeSsl.doHandshake(NativeSsl.java:375)
    at com.android.org.conscrypt.ConscryptFileDescriptorSocket.startHandshake(ConscryptFileDescriptorSocket.java:224)
    at com.android.okhttp.internal.io.RealConnection.connectTls(RealConnection.java:192)
    at com.android.okhttp.internal.io.RealConnection.connectSocket(RealConnection.java:149)
    at com.android.okhttp.internal.io.RealConnection.connect(RealConnection.java:112)
    at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:184)
    at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:126)
    at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:95)
    at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:281)
    at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:224)
    at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:461)
    at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:127)
    at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.connect(DelegatingHttpsURLConnection.java:89)
    at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:26)

Below image is the advance Android Option configuration I used.

Below snippets is ny HttpClient setup for HttpClient request.

public HttpClient httpClient { get; set; }

public ApiServiceBase()
{
    this.httpClient = new HttpClient() { BaseAddress = BaseAddress };
    this.httpClient.Timeout = TimeSpan.FromSeconds(60);
    this.httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
}

Visual Studio Community 2019 Version 16.7.2
.Net Framework Version 4.8

Yes, please provide the inner exception as well as @o_w mentioned. You can also try these https://stackoverflow.com/questions/59887091/how-to-make-calls-to-http2-on-xamarin-forms/62394603#62394603 — Saamer, Aug 23 '20 at 22:17
"the ssl connection could not be established see inner exception. authentication failed" That's the inner exception, It's occurred when we upgrade our server TLS from 1.2 to 1.3, It's only happen in Android platform in my Xamarin Forms. I do a lot of research including James Montemagno suggestions but it won't work. — parpar, Aug 24 '20 at 03:06
Javax.Net.Ssl.SSLProtocolException: SSL handshake aborted: ssl=0xcb444f08: Failure in SSL library, usually a protocol error error:1000042e:SSL routines:OPENSSL_internal:TLSV1_ALERT_PROTOCOL_VERSION (external/boringssl/src/ssl/tls_record.cc:592 0xcb172b48:0x00000001) --- End of managed Javax.Net.Ssl.SSLProtocolException stack trace --- javax.net.ssl.SSLProtocolException: SSL handshake aborted: ssl=0xcb444f08: Failure in SSL library, usually a protocol error error:1000042e:SSL routines:OPENSSL_internal:TLSV1_ALERT_PROTOCOL_VERSION — parpar, Aug 26 '20 at 00:42
I already post the detailed InnerException in my question above. Kindly check, please. Thanks — parpar, Aug 26 '20 at 00:45
What type of project is `Mobile.Client.APIService`? E.g. Is it .NET Standard 2.0? — Brandon Minnick, Aug 28 '20 at 16:18
Hi Brandon, Yes It is .Net Standard 2.0. All Libraries I used are .Net standard 2.0 — parpar, Aug 30 '20 at 02:07

Xamarin.Forms sending HttpClient GET or POST request to API with TLS 1.3

0 Answers0