Source: message.go in package vendor/golang.org/x/net/route

+build darwin dragonfly freebsd netbsd openbsd


package route

A Message represents a routing message.

Sys returns operating system-specific information.

	Sys() []Sys
}

A Sys reprensents operating system-specific information.

SysType returns a type of operating system-specific information.

	SysType() SysType
}

A SysType represents a type of operating system-specific information.

type SysType int

const (
	SysMetrics SysType = iota
	SysStats
)

ParseRIB parses b as a routing information base and returns a list of routing messages.

func ParseRIB(typ RIBType, b []byte) ([]Message, error) {
	if !typ.parseable() {
		return nil, errUnsupportedMessage
	}
	var msgs []Message
	nmsgs, nskips := 0, 0
	for len(b) > 4 {
		nmsgs++
		l := int(nativeEndian.Uint16(b[:2]))
		if l == 0 {
			return nil, errInvalidMessage
		}
		if len(b) < l {
			return nil, errMessageTooShort
		}
		if b[2] != rtmVersion {
			b = b[l:]
			continue
		}
		if w, ok := wireFormats[int(b[3])]; !ok {
			nskips++
		} else {
			m, err := w.parse(typ, b)
			if err != nil {
				return nil, err
			}
			if m == nil {
				nskips++
			} else {
				msgs = append(msgs, m)
			}
		}
		b = b[l:]

We failed to parse any of the messages - version mismatch?

	if nmsgs != len(msgs)+nskips {
		return nil, errMessageMismatch
	}
	return msgs, nil