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40 lines
1.4 KiB
Go
40 lines
1.4 KiB
Go
//go:build !js
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package client
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import (
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"github.com/netbirdio/netbird/client/iface"
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"github.com/netbirdio/netbird/shared/relay/client/dialer"
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"github.com/netbirdio/netbird/shared/relay/client/dialer/quic"
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"github.com/netbirdio/netbird/shared/relay/client/dialer/ws"
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)
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// getDialers returns the ordered list of dialers for connecting to the relay
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// server. For racing modes (auto) the order is irrelevant; for prefer modes the
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// first entry is tried before falling back to the second.
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func (c *Client) getDialers(mode TransportMode) []dialer.DialeFn {
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switch mode {
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case TransportModeWS:
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c.log.Infof("%s=ws, using WebSocket transport", EnvRelayTransport)
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return []dialer.DialeFn{ws.Dialer{}}
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case TransportModeQUIC:
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c.log.Infof("%s=quic, using QUIC transport", EnvRelayTransport)
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return []dialer.DialeFn{quic.Dialer{}}
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}
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if c.mtu > 0 && c.mtu > iface.DefaultMTU {
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c.log.Infof("MTU %d exceeds default (%d), forcing WebSocket transport to avoid DATAGRAM frame size issues", c.mtu, iface.DefaultMTU)
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return []dialer.DialeFn{ws.Dialer{}}
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}
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if c.transportFallback != nil && c.transportFallback.preferWS(c.connectionURL) {
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c.log.Infof("relay recently rejected QUIC datagrams, using WebSocket transport")
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return []dialer.DialeFn{ws.Dialer{}}
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}
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if mode == TransportModePreferWS {
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return []dialer.DialeFn{ws.Dialer{}, quic.Dialer{}}
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}
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return []dialer.DialeFn{quic.Dialer{}, ws.Dialer{}}
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}
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