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net: fix WriteTo on Plan 9

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This change excludes internal UDP header size from a result of number of
bytes written on WriteTo.

Change-Id: I847d57f7f195657b6f14efdf1b4cfab13d4490dd
Reviewed-on: https://go-review.googlesource.com/9196
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: David du Colombier <0intro@gmail.com>
This commit is contained in:
Mikio Hara 2015-04-21 23:15:12 +09:00
parent 91f2db3c57
commit 275755401d
1 changed files with 3 additions and 4 deletions
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7
src/net/udpsock_plan9.go
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@ -86,11 +86,10 @@ func (c *UDPConn) WriteToUDP(b []byte, addr *UDPAddr) (int, error) {
buf := make([]byte, udpHeaderSize+len(b))
i := copy(buf, h.Bytes())
copy(buf[i:], b)
n, err := c.fd.data.Write(buf)
if err != nil {
err = &OpError{Op: "write", Net: c.fd.dir, Addr: addr, Err: err}
if _, err := c.fd.data.Write(buf); err != nil {
return 0, &OpError{Op: "write", Net: c.fd.dir, Addr: addr, Err: err}
}
return n, err
return len(b), nil
}
// WriteTo implements the PacketConn WriteTo method.