func NetPipe(t testing.TB) (net.Conn, net.Conn) {
l, err := net.Listen("tcp", "localhost:0")
if err != nil {
t.Fatal(err)
}
defer l.Close()
client_future := utils.NewFuture()
go func() {
client_future.Set(net.Dial(l.Addr().Network(), l.Addr().String()))
}()
var errs utils.ErrorGroup
server_conn, err := l.Accept()
errs.Add(err)
client_conn, err := client_future.Get()
errs.Add(err)
err = errs.Finalize()
if err != nil {
if server_conn != nil {
server_conn.Close()
}
if client_conn != nil {
client_conn.(net.Conn).Close()
}
t.Fatal(err)
}
return server_conn, client_conn.(net.Conn)
}
func (c *Conn) getErrorHandler(rv C.int, errno error) func() error {
errcode := C.SSL_get_error(c.ssl, rv)
switch errcode {
case C.SSL_ERROR_ZERO_RETURN:
return func() error {
c.Close()
return io.ErrUnexpectedEOF
}
case C.SSL_ERROR_WANT_READ:
go c.flushOutputBuffer()
if c.want_read_future != nil {
want_read_future := c.want_read_future
return func() error {
_, err := want_read_future.Get()
return err
}
}
c.want_read_future = utils.NewFuture()
want_read_future := c.want_read_future
return func() (err error) {
defer func() {
c.mtx.Lock()
c.want_read_future = nil
c.mtx.Unlock()
want_read_future.Set(nil, err)
}()
err = c.fillInputBuffer()
if err != nil {
return err
}
return tryAgain
}
case C.SSL_ERROR_WANT_WRITE:
return func() error {
err := c.flushOutputBuffer()
if err != nil {
return err
}
return tryAgain
}
case C.SSL_ERROR_SYSCALL:
var err error
if C.ERR_peek_error() == 0 {
switch rv {
case 0:
err = errors.New("protocol-violating EOF")
case -1:
err = errno
default:
err = errorFromErrorQueue()
}
} else {
err = errorFromErrorQueue()
}
return func() error { return err }
default:
err := errorFromErrorQueue()
return func() error { return err }
}
}
func (c *Conn) ioErrorHandler(rv C.int, errno error, funcErr *C.SSLFuncError) func() error {
errorString := ""
if funcErr.error_message != nil {
errorString = C.GoStringN(funcErr.error_message, 255)
C.free(unsafe.Pointer(funcErr.error_message))
funcErr.error_message = nil
}
errcode := C.int(funcErr.error_code)
switch errcode {
case C.SSL_ERROR_ZERO_RETURN:
return func() error {
c.Close()
return io.ErrUnexpectedEOF
}
case C.SSL_ERROR_WANT_READ:
go c.flushOutputBuffer()
if c.want_read_future != nil {
want_read_future := c.want_read_future
return func() error {
_, err := want_read_future.Get()
return err
}
}
c.want_read_future = utils.NewFuture()
want_read_future := c.want_read_future
return func() (err error) {
defer func() {
c.mtx.Lock()
c.want_read_future = nil
c.mtx.Unlock()
want_read_future.Set(nil, err)
}()
err = c.fillInputBuffer()
if err != nil {
return err
}
return tryAgain
}
case C.SSL_ERROR_WANT_WRITE:
return func() error {
err := c.flushOutputBuffer()
if err != nil {
return err
}
return tryAgain
}
case C.SSL_ERROR_NONE:
return func() error {
return nil
}
case C.SSL_ERROR_SYSCALL:
var retErr error
if funcErr.has_errno != 0 {
switch rv {
case 0:
retErr = errors.New("protocol-violating EOF")
case -1:
retErr = errno
}
} else {
retErr = errors.New(errorString)
}
return func() error { return retErr }
default:
return func() error { return errors.New(errorString) }
}
}