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p2p: support protocol version negotiation

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This commit is contained in:
Péter Szilágyi
2015-06-26 15:48:50 +03:00
parent b0a5be4495
commit d84638bd31
3 changed files with 110 additions and 6 deletions
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10
p2p/protocol.go
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@ -43,8 +43,10 @@ func (cap Cap) String() string {
return fmt.Sprintf("%s/%d", cap.Name, cap.Version)
}
type capsByName []Cap
type capsByNameAndVersion []Cap
func (cs capsByName) Len() int { return len(cs) }
func (cs capsByName) Less(i, j int) bool { return cs[i].Name < cs[j].Name }
func (cs capsByName) Swap(i, j int) { cs[i], cs[j] = cs[j], cs[i] }
func (cs capsByNameAndVersion) Len() int { return len(cs) }
func (cs capsByNameAndVersion) Swap(i, j int) { cs[i], cs[j] = cs[j], cs[i] }
func (cs capsByNameAndVersion) Less(i, j int) bool {
return cs[i].Name < cs[j].Name || (cs[i].Name == cs[j].Name && cs[i].Version < cs[j].Version)
}