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Merge pull request #1414 from libp2p/merge-swarm
move the go-libp2p-swarm here
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| package swarm | ||
|
|
||
| import ( | ||
| ma "github.com/multiformats/go-multiaddr" | ||
| mamask "github.com/whyrusleeping/multiaddr-filter" | ||
| ) | ||
|
|
||
| // http://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xhtml | ||
| var lowTimeoutFilters = ma.NewFilters() | ||
|
|
||
| func init() { | ||
| for _, p := range []string{ | ||
| "/ip4/10.0.0.0/ipcidr/8", | ||
| "/ip4/100.64.0.0/ipcidr/10", | ||
| "/ip4/169.254.0.0/ipcidr/16", | ||
| "/ip4/172.16.0.0/ipcidr/12", | ||
| "/ip4/192.0.0.0/ipcidr/24", | ||
| "/ip4/192.0.0.0/ipcidr/29", | ||
| "/ip4/192.0.0.8/ipcidr/32", | ||
| "/ip4/192.0.0.170/ipcidr/32", | ||
| "/ip4/192.0.0.171/ipcidr/32", | ||
| "/ip4/192.0.2.0/ipcidr/24", | ||
| "/ip4/192.168.0.0/ipcidr/16", | ||
| "/ip4/198.18.0.0/ipcidr/15", | ||
| "/ip4/198.51.100.0/ipcidr/24", | ||
| "/ip4/203.0.113.0/ipcidr/24", | ||
| "/ip4/240.0.0.0/ipcidr/4", | ||
| } { | ||
| f, err := mamask.NewMask(p) | ||
| if err != nil { | ||
| panic("error in lowTimeoutFilters init: " + err.Error()) | ||
| } | ||
| lowTimeoutFilters.AddFilter(*f, ma.ActionDeny) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| package swarm | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "os" | ||
| "strings" | ||
|
|
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| "github.com/libp2p/go-libp2p-core/peer" | ||
|
|
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| ma "github.com/multiformats/go-multiaddr" | ||
| ) | ||
|
|
||
| // maxDialDialErrors is the maximum number of dial errors we record | ||
| const maxDialDialErrors = 16 | ||
|
|
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| // DialError is the error type returned when dialing. | ||
| type DialError struct { | ||
| Peer peer.ID | ||
| DialErrors []TransportError | ||
| Cause error | ||
| Skipped int | ||
| } | ||
|
|
||
| func (e *DialError) Timeout() bool { | ||
| return os.IsTimeout(e.Cause) | ||
| } | ||
|
|
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| func (e *DialError) recordErr(addr ma.Multiaddr, err error) { | ||
| if len(e.DialErrors) >= maxDialDialErrors { | ||
| e.Skipped++ | ||
| return | ||
| } | ||
| e.DialErrors = append(e.DialErrors, TransportError{ | ||
| Address: addr, | ||
| Cause: err, | ||
| }) | ||
| } | ||
|
|
||
| func (e *DialError) Error() string { | ||
| var builder strings.Builder | ||
| fmt.Fprintf(&builder, "failed to dial %s:", e.Peer) | ||
| if e.Cause != nil { | ||
| fmt.Fprintf(&builder, " %s", e.Cause) | ||
| } | ||
| for _, te := range e.DialErrors { | ||
| fmt.Fprintf(&builder, "\n * [%s] %s", te.Address, te.Cause) | ||
| } | ||
| if e.Skipped > 0 { | ||
| fmt.Fprintf(&builder, "\n ... skipping %d errors ...", e.Skipped) | ||
| } | ||
| return builder.String() | ||
| } | ||
|
|
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| // Unwrap implements https://godoc.org/golang.org/x/xerrors#Wrapper. | ||
| func (e *DialError) Unwrap() error { | ||
| return e.Cause | ||
| } | ||
|
|
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| var _ error = (*DialError)(nil) | ||
|
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| // TransportError is the error returned when dialing a specific address. | ||
| type TransportError struct { | ||
| Address ma.Multiaddr | ||
| Cause error | ||
| } | ||
|
|
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| func (e *TransportError) Error() string { | ||
| return fmt.Sprintf("failed to dial %s: %s", e.Address, e.Cause) | ||
| } | ||
|
|
||
| var _ error = (*TransportError)(nil) |
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