Skip to content

PostgresNIO

Core

Vapor AsyncKit RoutingKit ConsoleKit ConsoleLogger beta WebSocketKit MultipartKit

Authentication

JWT JWTKit Authentication

Templating

Database

Fluent FluentKit FluentSQL FluentPostgresDriver FluentMongoDriver FluentMySQLDriver FluentSQLiteDriver SQLKit PostgresKit MySQLKit SQLiteKit PostgresNIO MySQLNIO SQLiteNIO Redis

Queues

Queues QueuesRedisDriver

Push Notifications

Testing

XCTVapor VaporTesting XCTFluent XCTQueues

Essentials
PostgresClient
PostgresClient.Configuration
PostgresConnection
Running Queries
Advanced
PostgreSQL data types
Boosting Performance with Prepared Statements
- PostgresPreparedStatement
Listen & Notify
- PostgresNotification
  - Instance Properties
  - let payload: String
- PostgresNotificationSequence
Errors
PostgresError
PostgresDecodingError
PSQLError
Deprecations
Deprecations
Structures
PostgresCopyFromFormat
PostgresCopyFromWriter
- Instance Methods
- func write(ByteBuffer) async throws
PostgresTransactionError
- Instance Properties
- var beginError: (any Error)?
- var closureError: (any Error)?
- var commitError: (any Error)?
- var file: String
- var line: Int
- var rollbackError: (any Error)?
Extended Modules
Foundation
NIOCore
- Extended Structures
- ByteBuffer
Swift
_Concurrency
- Extended Protocols
- AsyncSequence
  - Instance Methods
  - func decode(_:context:file:line:)
  - func decode(_:file:line:)

API Docs
Framework Docs

- API Docs
  
  Reference documentation for Vapor
- Framework Docs
  
  Learn how to use Vapor
Home
Store
Showcase
Team
Blog
GitHub
Theme
- Light
- Dark
- System

Type Property

negotiateProtocolVersion

NegotiateProtocolVersion (B)

static let negotiateProtocolVersion: PostgresMessage.Identifier

Vapor

Reference documentation for Vapor and its ecosystem.

Community

Team
Join our Discord
Store
Showcase
Supporters

Resources

Blog
Framework Docs
API Docs
Press Kit
Help

API Documentation © 2026 Vapor.

Twitter
Mastodon
Bsky
GitHub