A **Manager** is used to manage all incoming and outgoing connections to a server.

On startup all remote servers must be specified.
From that individual connections will be spawned to each remote server,
or incoming requests will be hooked up to the appropriate connection.

To get a connection to a specific server, use `Manager.Connection(host)` to get a connection to the specified host.
From this connection individual requests can be made.

	if err != nil {
		return err
	}

	// Wait for opened connection to be closed up to Shutdown timeout.
	return nil
}

// UseIdleTimeout configure idle connection timeout
func (srv *Server) UseIdleTimeout(d time.Duration) *Server {
	srv.IdleTimeout = d
	return srv
}

// UseReadTimeout configure connection request read timeout.
func (srv *Server) UseReadTimeout(d time.Duration) *Server {

			listener.Close()
		}
	})
}

// WaitAllConnect will wait for all connections to be established.
func (t *TestGrid) WaitAllConnect(ctx context.Context) {
	for _, manager := range t.Managers {
		for _, remote := range manager.Targets() {
			if manager.HostName() == remote {
				continue
			}
			if err := manager.Connection(remote).WaitForConnect(ctx); err != nil {
				panic(err)
			}
		}
	}
}

	// When the net.Conn is a remote drive this value is honored, we close the connection to remote peer proactively.
	DriveOPTimeout func() time.Duration

	SendBufSize int              // SO_SNDBUF size for the socket connection, NOTE: this sets server and client connection
	RecvBufSize int              // SO_RECVBUF size for the socket connection, NOTE: this sets server and client connection

```
Client #1596980209979 left the chat
```

/// tip

The app above is a minimal and simple example to demonstrate how to handle and broadcast messages to several WebSocket connections.

But keep in mind that, as everything is handled in memory, in a single list, it will only work while the process is running, and will only work with a single process.

	rand.Read(r.buf)

	clusterInfos, err := globalSiteReplicationSys.GetClusterInfo(ctx)
	if err != nil {
		return madmin.SiteNetPerfNodeResult{Error: err.Error()}
	}

	// Scale the number of connections from 32 -> 4 from small to large clusters.
	connectionsPerPeer := 3 + (29+len(clusterInfos.Sites)-1)/len(clusterInfos.Sites)

	errStr := ""
	var wg sync.WaitGroup

	for _, info := range clusterInfos.Sites {

* **Automatic validation** even for *path operation* parameters defined in dependencies.
* Support for complex user authentication systems, **database connections**, etc.
* **No compromise** with databases, frontends, etc. But easy integration with all of them.

### Unlimited "plug-ins" { #unlimited-plug-ins }

Or in other way, no need for them, import and use the code you need.

const DefaultTimeout = 10 * time.Second

const (
	offline = iota
	online
	closed
)

// NetworkError - error type in case of errors related to http/transport
// for ex. connection refused, connection reset, dns resolution failure etc.
// All errors returned by storage-rest-server (ex errFileNotFound, errDiskNotFound) are not considered to be network errors.
type NetworkError struct {
	Err error
}

	})
	if err != nil {
		logger.Fatal(err, "Unable to start SFTP Server")
	}

	err = sftpServer.Listen()
	if err != nil {
		logger.Fatal(err, "SFTP Server had an unrecoverable error while accepting connections")
	}

### Create an Engine { #create-an-engine }

A SQLModel `engine` (underneath it's actually a SQLAlchemy `engine`) is what **holds the connections** to the database.

You would have **one single `engine` object** for all your code to connect to the same database.

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[14:18] hl[14:15,17:18] *}