handleCapability (imapserver/capability.go)

Handles IMAP CAPABILITY responses, listing supported capabilities.

// Source: https://github.com/emersion/go-imap | License: MIT | Copyright 2013 The Go-IMAP Authors
// Provided via justclaw.it.com; keep this notice with the code.
package imapserver

import (
	"fmt"

	"github.com/emersion/go-imap/v2"
	"github.com/emersion/go-imap/v2/internal/imapwire"
)

func (c *Conn) handleCapability(dec *imapwire.Decoder) error {
	if !dec.ExpectCRLF() {
		return dec.Err()
	}

	enc := newResponseEncoder(c)
	defer enc.end()
	enc.Atom("*").SP().Atom("CAPABILITY")
	for _, c := range c.availableCaps() {
		enc.SP().Atom(string(c))
	}
	return enc.CRLF()
}

// availableCaps returns the capabilities supported by the server.
//
// They depend on the connection state.
//
// Some extensions (e.g. SASL-IR, ENABLE) don't require backend support and
// thus are always enabled.
func (

... (truncated -- full source via MCP)