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edited Oct 23 at 16:39

Or maybe something with my cert? I generated it once via nodejs':

import selfsigned from 'selfsigned';
const pems = selfsigned.generate([{name: 'commonName', value: 'Solana node'}, { name: "subjectAltName", value: [{ type: 7, value: "0.0.0.0" }]}], { days: 365, algorithm: 'ed25519', keySize: 2048 });

and combined it into one pfx like this:

openssl pkcs12 -export -in certificate.pem -inkey privatekey.pem -out cert-and-key.pfx

and impoting in C# like this:

var mockedCert = new X509Certificate2(@"C:\cert-and-key.pfx");

(.NET doesn't natively support Ed25519 yet)

Or maybe something with my cert? I generated it once via nodejs':

import selfsigned from 'selfsigned';
const pems = selfsigned.generate([{name: 'commonName', value: 'Solana node'}, { name: "subjectAltName", value: [{ type: 7, value: "0.0.0.0" }]}], { days: 365, algorithm: 'ed25519', keySize: 2048 });

and combined it into one pfx like this:

openssl pkcs12 -export -in certificate.pem -inkey privatekey.pem -out cert-and-key.pfx

and impoting in C# like this:

var mockedCert = new X509Certificate2(@"C:\cert-and-key.pfx");

(.NET doesn't natively support Ed25519 yet)

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asked Oct 23 at 14:55

Temnij

How can I connect to Solana TPU via C#?

Trying to implement TPU Client over MsQuic. Here is my code:

var quicClient = await QuicConnection.ConnectAsync(new QuicClientConnectionOptions
{
    DefaultStreamErrorCode = 0x0A,
    DefaultCloseErrorCode = 0x0B,

    RemoteEndPoint = IPEndPoint.Parse(firstLeader.Item2.TpuQuic!),
    ClientAuthenticationOptions = new SslClientAuthenticationOptions
    {
        ClientCertificates = [mockedCert],
        ApplicationProtocols = [new SslApplicationProtocol("solana-tpu")],
        EnabledSslProtocols = SslProtocols.Tls13,
        TargetHost = "server",
    }
});
await using var streamSend = await quicClient.OpenOutboundStreamAsync(QuicStreamType.Unidirectional);

This code is failing with exception System.Net.Quic.QuicException: An internal error has occurred. Status code: QUIC_STATUS_HANDSHAKE_FAILURE. When I look further in Wireshark, I see slightly more informational error:

CONNECTION_CLOSE (Transport) Error code: CRYPTO_ERROR (Handshake Failure)
    Frame Type: CONNECTION_CLOSE (Transport) (0x000000000000001c)
    Error code: CRYPTO_ERROR (296)
    TLS Alert Description: Handshake Failure (40)
    Frame Type: 0
    Reason phrase Length: 48
    Reason phrase: peer is incompatible: NoSignatureSchemesInCommon

So I suppose, MsQuic doesn't provide such TLS Signature Algorithms, that Solana TPU Server use. There is signature algorithms from and cipher suites from my ClientHello:

Signature Hash Algorithms (12 algorithms)
    Signature Algorithm: rsa_pss_rsae_sha256 (0x0804)
    Signature Algorithm: rsa_pss_rsae_sha384 (0x0805)
    Signature Algorithm: rsa_pss_rsae_sha512 (0x0806)
    Signature Algorithm: rsa_pkcs1_sha256 (0x0401)
    Signature Algorithm: rsa_pkcs1_sha384 (0x0501)
    Signature Algorithm: rsa_pkcs1_sha1 (0x0201)
    Signature Algorithm: ecdsa_secp256r1_sha256 (0x0403)
    Signature Algorithm: ecdsa_secp384r1_sha384 (0x0503)
    Signature Algorithm: ecdsa_sha1 (0x0203)
    Signature Algorithm: SHA1 DSA (0x0202)
    Signature Algorithm: rsa_pkcs1_sha512 (0x0601)
    Signature Algorithm: ecdsa_secp521r1_sha512 (0x0603)

Cipher Suites (2 suites)
    Cipher Suite: TLS_AES_256_GCM_SHA384 (0x1302)
    Cipher Suite: TLS_AES_128_GCM_SHA256 (0x1301)

So, what can I do with it? As I can see, there is no other Quic implementations/binders (that are not outdated) in C#.

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