diff options
Diffstat (limited to 'src/vpp-api/python')
| -rw-r--r-- | src/vpp-api/python/vpp_papi/vpp_transport_socket.py | 42 |
1 files changed, 24 insertions, 18 deletions
diff --git a/src/vpp-api/python/vpp_papi/vpp_transport_socket.py b/src/vpp-api/python/vpp_papi/vpp_transport_socket.py index 3c3c8e514db..3c1ea326198 100644 --- a/src/vpp-api/python/vpp_papi/vpp_transport_socket.py +++ b/src/vpp-api/python/vpp_papi/vpp_transport_socket.py @@ -188,31 +188,37 @@ class VppTransport(object): # Send header header = self.header.pack(0, len(buf), 0) - n = self.socket.send(header) - n = self.socket.send(buf) - if n == 0: - raise VppTransportSocketIOError(1, 'Not connected') + if self.socket.sendall(header) is None: + raise VppTransportSocketIOError(1, 'Failed to send') + if self.socket.sendall(buf) is None: + raise VppTransportSocketIOError(1, 'Failed to send') + + def _read_fixed(self, size): + """Repeat receive until fixed size is read. Return empty on error.""" + buf = bytearray(size) + view = memoryview(buf) + left = size + while 1: + got = self.socket.recv_into(view, left) + if got <= 0: + # Read error. + return "" + if got >= left: + # TODO: Raise if got > left? + break + left -= got + view = view[got:] + return buf def _read(self): - hdr = self.socket.recv(16) + """Read single complete message, return it or empty on error.""" + hdr = self._read_fixed(16) if not hdr: return (_, hdrlen, _) = self.header.unpack(hdr) # If at head of message # Read rest of message - msg = self.socket.recv(hdrlen) - if hdrlen > len(msg): - nbytes = len(msg) - buf = bytearray(hdrlen) - view = memoryview(buf) - view[:nbytes] = msg - view = view[nbytes:] - left = hdrlen - nbytes - while left: - nbytes = self.socket.recv_into(view, left) - view = view[nbytes:] - left -= nbytes - return buf + msg = self._read_fixed(hdrlen) if hdrlen == len(msg): return msg raise VppTransportSocketIOError(1, 'Unknown socket read error') |