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-rw-r--r--vendor/golang.org/x/net/ipv4/helper.go64
1 files changed, 64 insertions, 0 deletions
diff --git a/vendor/golang.org/x/net/ipv4/helper.go b/vendor/golang.org/x/net/ipv4/helper.go
new file mode 100644
index 0000000..8d8ff98
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/helper.go
@@ -0,0 +1,64 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import (
+ "errors"
+ "net"
+)
+
+var (
+ errInvalidConn = errors.New("invalid connection")
+ errMissingAddress = errors.New("missing address")
+ errMissingHeader = errors.New("missing header")
+ errHeaderTooShort = errors.New("header too short")
+ errBufferTooShort = errors.New("buffer too short")
+ errInvalidConnType = errors.New("invalid conn type")
+ errOpNoSupport = errors.New("operation not supported")
+ errNoSuchInterface = errors.New("no such interface")
+ errNoSuchMulticastInterface = errors.New("no such multicast interface")
+
+ // See http://www.freebsd.org/doc/en/books/porters-handbook/freebsd-versions.html.
+ freebsdVersion uint32
+)
+
+func boolint(b bool) int {
+ if b {
+ return 1
+ }
+ return 0
+}
+
+func netAddrToIP4(a net.Addr) net.IP {
+ switch v := a.(type) {
+ case *net.UDPAddr:
+ if ip := v.IP.To4(); ip != nil {
+ return ip
+ }
+ case *net.IPAddr:
+ if ip := v.IP.To4(); ip != nil {
+ return ip
+ }
+ }
+ return nil
+}
+
+func opAddr(a net.Addr) net.Addr {
+ switch a.(type) {
+ case *net.TCPAddr:
+ if a == nil {
+ return nil
+ }
+ case *net.UDPAddr:
+ if a == nil {
+ return nil
+ }
+ case *net.IPAddr:
+ if a == nil {
+ return nil
+ }
+ }
+ return a
+}