vasyansk
2623bc8815
Reduce idle read timeout from 120s to 60s Add batching for IMAP metadata fetches
31 lines
1.0 KiB
Go
31 lines
1.0 KiB
Go
package imapx
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import (
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"net"
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"time"
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)
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// idleReadTimeout bounds how long a connection may go WITHOUT receiving any
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// bytes from the server before the read is aborted. It is an *idle* timeout,
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// not a total deadline: every successful read pushes it forward, so a slow but
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// live transfer never trips it — only a genuinely dead/mute socket does. This
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// is what stops an account from wedging in "running" forever when a server
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// accepts a command (e.g. a large FETCH) and then goes silent.
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var idleReadTimeout = 60 * time.Second
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// idleConn wraps a net.Conn and arms a fresh read deadline before every Read.
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// It lives beneath any TLS layer (the raw TCP conn), so the deadline governs
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// the actual blocking network read regardless of encryption.
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type idleConn struct {
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net.Conn
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timeout time.Duration
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}
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func (c *idleConn) Read(b []byte) (int, error) {
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if c.timeout > 0 {
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// Ignore the error: a closed conn will surface it from Read below.
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_ = c.Conn.SetReadDeadline(time.Now().Add(c.timeout))
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}
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return c.Conn.Read(b)
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}
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