.NET(C#) MySQL conn.Open()报错:SSL Connection error的解决方法

本文主要介绍.NET(C#)中,使用MySQL数据库调用MySqlConnection对象的Open()方法时,报错:MySql.Data.MySqlClient.MySqlException (0x80004005): SSL Connection error.的解决方法。

使用示例代码:

public async void SQLInsert()
{
string connStr = "Server=echstreme.de;User=c1Look;Database=c1Look;Port=3306;Password=redacted;";
MySqlConnection conn = new MySqlConnection(connStr);
try
{
await SendEmbedMessage("MySQL", "Attempting to connect to database");
conn.Open();
await SendEmbedMessage("MySQL", "Connection to Database Successful");
MySqlCommand cmd = new MySqlCommand(sqlQuery, conn);
cmd.ExecuteNonQuery();

conn.Close();
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}

报错信息:

MySql.Data.MySqlClient.MySqlException (0x80004005): SSL Connection error.
---> System.AggregateException: One or more errors occurred. (The handshake failed due to an unexpected packet format.)
---> System.IO.IOException: The handshake failed due to an unexpected packet format.
at System.Net.Security.SslStream.StartReadFrame(Byte[] buffer, Int32 readBytes, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslStream.PartialFrameCallback(AsyncProtocolRequest asyncRequest)
--- End of stack trace from previous location where exception was thrown ---
at System.Net.Security.SslStream.ThrowIfExceptional()
at System.Net.Security.SslStream.InternalEndProcessAuthentication(LazyAsyncResult lazyResult)
at System.Net.Security.SslStream.EndProcessAuthentication(IAsyncResult result)
at System.Net.Security.SslStream.EndAuthenticateAsClient(IAsyncResult asyncResult)
at System.Net.Security.SslStream.<>c.<AuthenticateAsClientAsync>b__64_2(IAsyncResult iar)
at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of inner exception stack trace ---
at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
at MySql.Data.Common.Ssl.StartSSL(Stream& baseStream, Encoding encoding, String connectionString)
at MySql.Data.Common.Ssl.StartSSL(Stream& baseStream, Encoding encoding, String connectionString)
at MySql.Data.MySqlClient.NativeDriver.Open()
at MySql.Data.MySqlClient.Driver.Open()
at MySql.Data.MySqlClient.Driver.Create(MySqlConnectionStringBuilder settings)
at MySql.Data.MySqlClient.MySqlPool.CreateNewPooledConnection()
at MySql.Data.MySqlClient.MySqlPool.GetPooledConnection()
at MySql.Data.MySqlClient.MySqlPool.TryToGetDriver()
at MySql.Data.MySqlClient.MySqlPool.GetConnection()
at MySql.Data.MySqlClient.MySqlConnection.Open()
at Bot.Admins.AdminCommands.SQLInsert() in C:\Users\Owner\source\repos\Bot\Bot\Admins\AdminCommands.cs:line 71

解决方法:

如果服务器不支持SSL,可以使用SSL模式选项,NoneRequired

连接字符串需要这样写:

"Server=echstreme.de;User=c1Look;Database=c1Look;Port=3306;Password=redacted;SSL Mode=None"


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