[Solved]:FiPy socket.connect command

[DDA]

Thanks a ton @jmarcelino. My problem is solved, added the following right after lte.connect(cid=3), and before s=socket.socket....

while not lte.isconnected():
    time.sleep(0.25)

and edited the s.connect to :

address = socket.getaddrinfo('123.45.67.89',4949) #update with you own server IP, 
print(address)
s.connect(address[0][-1])

One minor problem still exists, which I need to look investigate further...maybe tomorrow, the code works once...top to bottom as expected , but if I press "reset" the code executes again as expected, but modem fails to attach...CSQ is 99,99. So far I have seen, if I do power-down-up it works again...but not with reset. Maybe I should run it in loop every 5-10 minutes and check.

@administrators, @jmarcelino
Per my last forum topic: https://forum.pycom.io/topic/3201/solved-fipy-cat-m1-connection
I am able to connect to the Verizon network with my FiPy, but as I modified the code to post data to my server I am getting an unexpected error with s.connect((host,port)). I even tried
addr=(host,port)
s.connect(addr) instead of s.connect((host,port)) but same error each time.
Here is my code block and error

from network import LTE
#from socket import *

import socket
import ssl
import time
import sys
import pycom 

host='abc.dyndns.org' # replaced actual host name portion with "abc"
port=4949
addr=(host,port)

pycom.heartbeat(False)

print('Pycom module and firmware version:%s' % os.uname())
lte = LTE(carrier="verizon")  # instantiate the LTE object
lte.attach(band=13)   # attach the cellular modem to a base station, initially it was lte.attch()
print('FiPY is attached to network')
time.sleep(0.25) 
pycom.rgbled(0x0000ff) # BLUE LED
while not lte.isattached():
    print('While not attached yet, signal:%s'%lte.send_at_cmd('AT+CSQ'))
    lte.send_at_cmd('AT+CSQ')
    print('While not attached yet, status:%s '%lte.send_at_cmd('AT+CEER'))
    lte.send_at_cmd('AT+CEER')
    time.sleep(.25)  # originally 0.25 changed to 5.0 if unseccful in connecting
    lte.attach(band=13)
lte.connect(cid=3)       # start a data session and obtain an IP address
print('Connected to LTE-CATM1')
pycom.rgbled(0x00ff00) # GREEN LED
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print('Socket created')
s.settimeout(5.0)
#s.connect((host, port))  # tried this as well
s.connect(addr)
print('Socket Bind Complete....moving to send data  ')
#s.listen(10)
s.send('1~660832~05/08/1501:00A0A141E28323C4650~')
#data=s.recv(1024)
s.close()
#print('Received:, repr(data)')
lte.disconnect()
lte.dettach()
pycom.rgbled(0xff0000) # RED LED
print( " Reached EOP")

Terminal output:

>>> os.mkfs('/flash')
>>>
Uploading project (main folder)...

Reading file status
Failed to read project status, uploading all files
Creating dir workspaceStorage
Creating dir workspaceStorage/bc895fb1973b5d5624b4a2ed2625b38c
Creating dir workspaceStorage/d0c7d1ef2572273c369bbcf44005cf73
[1/5] Writing file main.py
[2/5] Writing file pymakr.json
[3/5] Writing file settings.json
[4/5] Writing file workspaceStorage/bc895fb1973b5d5624b4a2ed2625b38c/meta.json
[5/5] Writing file workspaceStorage/d0c7d1ef2572273c369bbcf44005cf73/meta.json
Upload done, resetting board...
ets Jun  8 2016 00:22:57

rst:0x7 (TG0WDT_SYS_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff8028,len:8
load:0x3fff8030,len:1728
load:0x4009fa00,len:0
load:0x4009fa00,len:14584
entry 0x400a059c
Pycom module and firmware version:(sysname='FiPy', nodename='FiPy', release='1.17.3.b1', version='v1.8.6-849-83e2f7f on 2018-03-19', machine='FiPy with ESP32', lorawan='1.0.2', sigfox='1.0.1')
FiPy is attached to network
Connected to LTE-CATM1
Socket created
Traceback (most recent call last):
  File "main.py", line 36, in <module>
ValueError: invalid arguments
MicroPython v1.8.6-849-83e2f7f on 2018-03-19; FiPy with ESP32
Type "help()" for more information.
>>>

Please advise.Thanks much!!

[jmarcelino]

Hi @dda

socket.connect doesn't take a domain name, you need to resolve it first into a tuple like this - (family, type, proto, canonname, sockaddr) - which you can obtain from socket.getaddrinfo()

In your case doing:

s.connect(socket.getaddrinfo(addr, port)[0][-1])

should do what you want.

There currently isn't a way to obtain your assigned IP address.

[DDA]

@administrators @jmarcelino @daniel @robert-hh @timh
Any body any suggestions, I am still stuck! Thanks

[DDA]

Also, once connected how do I find the assigned IP address of the FiPy? Use AT+CGPIAF?