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safesocket: document

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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2020-02-25 08:46:26 -08:00
parent a6ad3c46e2
commit 29f7d64091
3 changed files with 46 additions and 20 deletions
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12
safesocket/unixsocket.go
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@@ -12,16 +12,8 @@ import (
"os"
)
func ConnCloseRead(c net.Conn) error {
return c.(*net.UnixConn).CloseRead()
}
func ConnCloseWrite(c net.Conn) error {
return c.(*net.UnixConn).CloseWrite()
}
// TODO(apenwarr): handle magic cookie auth
func Connect(path string, port uint16) (net.Conn, error) {
func connect(path string, port uint16) (net.Conn, error) {
pipe, err := net.Dial("unix", path)
if err != nil {
return nil, err
@@ -30,7 +22,7 @@ func Connect(path string, port uint16) (net.Conn, error) {
}
// TODO(apenwarr): handle magic cookie auth
func Listen(path string, port uint16) (net.Listener, uint16, error) {
func listen(path string, port uint16) (ln net.Listener, _ uint16, err error) {
// Unix sockets hang around in the filesystem even after nobody
// is listening on them. (Which is really unfortunate but long-
// entrenched semantics.) Try connecting first; if it works, then