fix hostname parsing, add aio posting

Author: brentru

adafruit_fona/adafruit_fona.py

@@ -506,29 +506,24 @@ def get_host_by_name(self, hostname):
         :param str hostname: Destination server.
 
         """
+        self._read_line()
         if self._debug:
             print("*** get_host_by_name: ", hostname)
         if isinstance(hostname, str):
             hostname = bytes(hostname, "utf-8")
 
-        self._read_line()
-        self._uart.reset_input_buffer()
-
         if self._debug:
             print("\t---> AT+CDNSGIP=", hostname)
-        
         if not self._send_check_reply(b'AT+CDNSGIP="' + hostname + b'"\r\n', reply=REPLY_OK):
             return False
 
-#        self._uart.write(b'AT+CDNSGIP="' + hostname + b'"\r\n')
-#        if not self._expect_reply(REPLY_OK):
-#            return False
-
-        # parse the second response
+        # attempt to parse a response
         self._read_line()
+        while not self._parse_reply(b"+CDNSGIP:", idx=2):
+            self._read_line()
+
         if self._debug:
             print("\t<--- ", self._buf)
-        self._parse_reply(b"+CDNSGIP:", idx=2)
         return self._buf
 
     ### Socket API (TCP, UDP) ###

examples/fona_aio_post.py

@@ -0,0 +1,60 @@
+import time
+import board
+import busio
+import digitalio
+from adafruit_fona.adafruit_fona import FONA
+import adafruit_fona.adafruit_fona_socket as cellular_socket
+import adafruit_requests as requests
+
+# Get GPRS details and more from a secrets.py file
+try:
+    from secrets import secrets
+except ImportError:
+    print("GPRS secrets are kept in secrets.py, please add them there!")
+    raise
+
+# Create a serial connection for the FONA connection using 4800 baud.
+# These are the defaults you should use for the FONA Shield.
+# For other boards set RX = GPS module TX, and TX = GPS module RX pins.
+uart = busio.UART(board.TX, board.RX, baudrate=4800)
+rst = digitalio.DigitalInOut(board.D4)
+
+# Initialize FONA module (this may take a few seconds)
+print("Initializing FONA")
+fona = FONA(uart, rst)
+
+# Enable GPS
+fona.gps = True
+
+# Bring up cellular connection
+fona.configure_gprs((secrets["apn"], secrets["apn_username"], secrets["apn_password"]))
+
+# Bring up GPRS
+fona.gprs = True
+print("FONA initialized")
+
+# Initialize a requests object with a socket and cellular interface
+requests.set_socket(cellular_socket, fona)
+
+counter = 0
+
+while True:
+    print("Posting data...", end="")
+    data = counter
+    feed = "test"
+    payload = {"value": data}
+    response = requests.post(
+        "http://io.adafruit.com/api/v2/"
+        + secrets["aio_username"]
+        + "/feeds/"
+        + feed
+        + "/data",
+        json=payload,
+        headers={"X-AIO-KEY": secrets["aio_key"]},
+    )
+    print(response.json())
+    response.close()
+    counter = counter + 1
+    print("OK")
+    response = None
+    time.sleep(15)