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Make loop() in esp32spi implementation non-blocking #69

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Merged
merged 3 commits into from
Feb 19, 2021
Merged

Make loop() in esp32spi implementation non-blocking #69

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1c0f6c8
Changed format codes from %x to %s in logger. _sock_exact_recv raises…
dlizotte-uwo Feb 13, 2021
9791e9d
Fixed long comment lines.
dlizotte-uwo Feb 13, 2021
3ab67bb
fixed superfluous-parens
dlizotte-uwo Feb 19, 2021
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19 changes: 13 additions & 6 deletions adafruit_minimqtt/adafruit_minimqtt.py
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Original file line number Diff line number Diff line change
Expand Up @@ -510,7 +510,7 @@ def connect(self, clean_session=True, host=None, port=None, keep_alive=None):
if self.logger:
self.logger.debug("Sending CONNECT to broker...")
self.logger.debug(
"Fixed Header: %x\nVariable Header: %x", fixed_header, var_header
"Fixed Header: %s\nVariable Header: %s", fixed_header, var_header
)
self._sock.send(fixed_header)
self._sock.send(var_header)
Expand Down Expand Up @@ -634,7 +634,7 @@ def publish(self, topic, msg, retain=False, qos=0):

if self.logger:
self.logger.debug(
"Sending PUBLISH\nTopic: %s\nMsg: %x\
"Sending PUBLISH\nTopic: %s\nMsg: %s\
\nQoS: %d\nRetain? %r",
topic,
msg,
Expand Down Expand Up @@ -803,8 +803,7 @@ def loop(self, timeout=1):
# Handle KeepAlive by expecting a PINGREQ/PINGRESP from the server
if self.logger is not None:
self.logger.debug(
"KeepAlive period elapsed - \
requesting a PINGRESP from the server..."
"KeepAlive period elapsed - requesting a PINGRESP from the server..."
)
rcs = self.ping()
self._timestamp = 0
Expand All @@ -826,7 +825,7 @@ def _wait_for_msg(self, timeout=0.1):
res = self._sock_exact_recv(1)
except OSError as error:
if error.errno == errno.ETIMEDOUT:
# raised by a socket timeout in socketpool
# raised by a socket timeout if 0 bytes were present
return None
raise MMQTTException from error

Expand All @@ -837,7 +836,7 @@ def _wait_for_msg(self, timeout=0.1):
return None
if res[0] == MQTT_PINGRESP:
if self.logger:
self.logger.debug("Checking PINGRESP")
self.logger.debug("Got PINGRESP")
sz = self._sock_exact_recv(1)[0]
if sz != 0x00:
raise MMQTTException(
Expand Down Expand Up @@ -910,7 +909,15 @@ def _sock_exact_recv(self, bufsize):
else: # ESP32SPI Impl.
stamp = time.monotonic()
read_timeout = self.keep_alive
# This will timeout with socket timeout (not keepalive timeout)
rc = self._sock.recv(bufsize)
if(not rc):
if self.logger:
self.logger.debug("_sock_exact_recv timeout")
# If no bytes waiting, raise same exception as socketpool
raise OSError(errno.ETIMEDOUT)
# If any bytes waiting, try to read them all,
# or raise exception if wait longer than read_timeout
to_read = bufsize - len(rc)
assert to_read >= 0
read_timeout = self.keep_alive
Expand Down