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Require SSL for connecting to PostgreSQL #1023

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8 changes: 7 additions & 1 deletion tools/Azure.Mcp.Tools.Postgres/src/Services/PostgresService.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -219,7 +219,13 @@ private sealed class PostgresResource : IAsyncDisposable

public static async Task<PostgresResource> CreateAsync(string connectionString)
{
var dataSource = new NpgsqlSlimDataSourceBuilder(connectionString)
// Configure SSL settings for secure connection
var connectionBuilder = new NpgsqlConnectionStringBuilder(connectionString)
{
SslMode = SslMode.VerifyFull // See: https://www.npgsql.org/doc/security.html?tabs=tabid-1#encryption-ssltls
};

var dataSource = new NpgsqlSlimDataSourceBuilder(connectionBuilder.ConnectionString)
.EnableTransportSecurity()
.Build();
var connection = await dataSource.OpenConnectionAsync();
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