39 lines
1.4 KiB
Go
39 lines
1.4 KiB
Go
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package ipnet
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import (
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"net"
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"os"
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)
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// EnvKey defines environment variable name for forcing usage of PNet in libp2p
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// When environment variable of this name is set to "1" the ForcePrivateNetwork
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// variable will be set to true.
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const EnvKey = "LIBP2P_FORCE_PNET"
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// ForcePrivateNetwork is boolean variable that forces usage of PNet in libp2p
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// Setting this variable to true or setting LIBP2P_FORCE_PNET environment variable
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// to true will make libp2p to require private network protector.
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// If no network protector is provided and this variable is set to true libp2p will
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// refuse to connect.
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var ForcePrivateNetwork = false
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func init() {
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ForcePrivateNetwork = os.Getenv(EnvKey) == "1"
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}
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// ErrNotInPrivateNetwork is an error that should be returned by libp2p when it
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// tries to dial witt ForcePrivateNetwork set and no PNet Protector
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var ErrNotInPrivateNetwork = NewError("private network was not configured but" +
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" is enforced by the environment")
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// Protector interface is a way for private network implementation to be transparent in
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// libp2p. It is created by implementation and use by libp2p-conn to secure connections
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// so they can be only established with selected number of peers.
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type Protector interface {
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// Wraps passed connection to protect it
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Protect(net.Conn) (net.Conn, error)
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// Returns key fingerprint that is safe to expose
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Fingerprint() []byte
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}
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