如何使用P12证书发送iOS - APN通知- C#示例

string certificatePath = "path/to/certificate.p12";
string certificatePassword = "password";

X509Certificate2 certificate = new X509Certificate2(certificatePath, certificatePassword);

string apnServer = "gateway.push.apple.com";
int apnPort = 2195;

TcpClient apnClient = new TcpClient(apnServer, apnPort);

SslStream sslStream = new SslStream(apnClient.GetStream(), false);
sslStream.AuthenticateAsClient(apnServer, new X509CertificateCollection() { certificate }, System.Security.Authentication.SslProtocols.Tls, false);

string deviceToken = "device_token";
string payload = "{\"aps\":{\"alert\":\"Hello, World!\"}}";

byte[] payloadBytes = Encoding.UTF8.GetBytes(payload);
byte[] deviceTokenBytes = HexStringToByteArray(deviceToken);

MemoryStream memoryStream = new MemoryStream();
BinaryWriter writer = new BinaryWriter(memoryStream);

writer.Write((byte)0);  // Command
writer.Write((byte)0);  // Identifier
writer.Write((byte)0);  // Expiry
writer.Write((byte)32); // Token length
writer.Write(deviceTokenBytes);
writer.Write((byte)0);  // Payload length
writer.Write(payloadBytes);
writer.Flush();

byte[] notification = memoryStream.ToArray();
sslStream.Write(notification);
sslStream.Flush();

sslStream.Close();
apnClient.Close();