Send data requests http post. **SOLVED**

[scg94]

Hello everyone,

I'm Santiago from Colombia...

¿How can I send data requests http POST, from LoPy to other web server?.

Thank you.
Regards.

[Wolli01]

@wolli01 Hier mein Code

import urequests
userdata = {"p1": "Wohnzimmer", "p2": "24.12.2018", "p3": "23.97"}
url = 'https://Homepage.de/live1.php'
res = urequests.post(url, headers={"Content-Type": "application/json", "Accept": "application/json"}, data= str(userdata))
res.close()

auf den PHP Server:
<?php
//Sensor1

$p1 = $_GET["p1"];
$p2 = $_GET["p2"];
$p3 = $_GET["p3"];

$inhalt = array($p1, $p2, $p3);
// Speichern der Datei
$eintrag = implode(";", $inhalt);
file_put_contents("sensor1.txt", $eintrag);
?>

[Wolli01]

@danielm I have tried now but unfortunately only empty strings are written in the file, either no data arrive or they are not read correctly. The PHP file will be called in any case.

[danielm]

@wolli01
Check the test code linked in this post:
https://forum.pycom.io/topic/4099/new-firmware-release-candidate-v1-20-0-rc0/12

[Wolli01]

@danielm Hi, I installed your lib, is there a sample code for HTTPS.Post?
I then want to get the data from my home page server.

PHP Server
<?php
//Sensor1

$p1 = $_GET["p1"]];
$p2 = $_GET["p2"];
$p3 = $_GET["p3"];

$p4 = $_GET["p4"];
$p5 = $_GET["p5"];

$p6 = $_GET["p6"];
$p7 = $_GET["p7"];
$p8 = $_GET["p8"];
$p9 = $_GET["p9"];
$p10 = $_GET["p10"];

$p11 = $_GET["p11"];
$p12 = $_GET["p12"];
$p13 = $_GET["p13"];
$p14 = $_GET["p14"];
$p15 = $_GET["p15"];

$p16 = $_GET["p16"];
$p17 = $_GET["p17"];
$p18 = $_GET["p18"];
$p19 = $_GET["p19"];
$p20 = $_GET["p20"];

$content = array($p1, $p2, $p3, $p4, $p5, $p6, $p7, $p8, $p9, $p10, $p11, $p12, $p13, $p14, $p15, $p16, $p17, $p18, $p19, $p20);
// Save the file
$entry = implode(";", $content);
file_put_contents("sensor1.txt", $entry);
?>

Translated with www.DeepL.com/Translator

[scg94]

@livius
Hey bro! SOLVED

>>> urequest.request("POST","http://50.23.124.68/api/v1.6/devices/raspberry-pi?token=private",'{"temperatura_rpi":'+str(30.67)+'}',None,{"Content-Type" : "application/json"}).text
'{"temperatura_rpi": [{"status_code": 201}]}'
>>>

Thanks a Lot...

[livius]

@scg94

i miss one parameter
try this

urequest.request("POST","http://50.23.124.68/api/v1.6/devices/raspberry-pi?token=private",'{"temperatura_rpi":'+str(500)+'}', None, {"Content-Type": "text/plain"}).text

[scg94]

@livius Hiiiii,

Yes, that's right, the header is {Content-Type: application / json}. Unfortunately I get error, and this is where everything gets complicated again ...

>>> urequest.request("POST","http://50.23.124.68/api/v1.6/devices/raspberry-pi?token=private",'{"temperatura_rpi":'+str(500)+'}',{"Content-Type":"application/json"}).text
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/flash/lib/urequest.py", line 67, in request
AssertionError: 
>>> urequest.request("POST","http://50.23.124.68/api/v1.6/devices/raspberry-pi?token=private",'{"temperatura_rpi":'+str(500)+'}',{"Content-Type : application/json"}).text
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/flash/lib/urequest.py", line 67, in request
AssertionError: 
>>> 

If you want I can send the token for a message so that you help me to make tests and see the error that I get ...

[livius]

@scg94
I do not know which media type is supported on your site but
try to add parameter

urequest.request("POST","http://50.23.124.68/api/v1.6/devices/raspberry-pi?token=private",'{"temperatura_rpi":'+str(500)+'}', {"Content-Type": "text/plain"}).text

[scg94]

@livius
Brother, I just saw the error more clearly...

>>> urequest.request("POST","http://50.23.124.68/api/v1.6/devices/raspberry-pi?token=private",'{"temperatura_rpi":'+str(500)+'}').text
'{"detail": "Unsupported media type \'\' in request."}'

What is it????

I did the same as you and this was the result:

>>> urequest.request("POST", "http://requestb.in/1kley5v1", '{"temperatura_rpi":' + str(500)+'}').text
'ok'
>>> urequest.request("POST", "http://requestb.in/1kley5v1", '{"temperatura_rpi":500}').text
'ok'

[livius]

@scg94
try first on e.g.
https://requestb.in

create bin and put url

>>> urlpost.request("POST", "http://requestb.in/1kley5v1", '{"temperatura_rpi":' + str(500)+'}').text
'ok'
>>> 

FORM/POST PARAMETERS

None
HEADERS

Host: requestb.in
X-Request-Id: b5ff3790-7279-4a4a-8237-b91ac4f26221
Cf-Ipcountry: PL
Cf-Ray: 34d8ea4990e56b01-WAW
Via: 1.1 vegur
Connection: close
Total-Route-Time: 0
Content-Length: 23
Cf-Visitor: {"scheme":"http"}
Cf-Connecting-Ip: XXXX
Connect-Time: 10
Accept-Encoding: gzip
RAW BODY

{"temperatura_rpi":500}

[scg94]

@livius Okay, I want you to see this ...

I was trying to send the data and I got a response:

>>> urlpost.request("POST", "http://50.23.124.68/api/v1.6/devices/raspberry-pi?token=private")
<Response object at 3ffe5870>
>>> urlpost.request("POST", "http://50.23.124.68/api/v1.6/devices/raspberry-pi?token=private",'{"temperatura_rpi":'+str(500)+'}')
<Response object at 3ffe6250>

However he did not receive anything on the platform. From one moment to another I got an error:

>>> urlpost.request("POST", "http://50.23.124.68/api/v1.6/devices/raspberry-pi?token=private",'{"temperatura_rpi":'+str(500)+'}')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/flash/lib/urequest.py", line 53, in request
OSError: 23

I have done well the connection with WLAN, because I could enter by FTP and because in the same console I have a response:

>>> wlan.isconnected()
True
>>> wlan.ifconfig()
('192.168.1.103', '255.255.255.0', '192.168.1.254', 'Public_IP')

I do not know what else to do...

[livius]

@scg94
are you sure that you are connected to the router?
And do you have OSError after first good try?
If you try again after some error request it raise OSError

for me library work - and i can send POST request
did you tried

urlpost.request("POST", "http://itstop.pl/testapi?kind=test&key=secret", '{"temperatura_rpi":' + str(500)+'}').text

but library need some little correction to work with some errors responses
but if you have good one it success always

[scg94]

@livius I was confused on line 53, sorry, I already corrected it ...

The library is https://github.com/micropython/micropython-lib/blob/master/urequests/urequests.py

And the error line 53 is:

s = usocket.socket()

[livius]

@scg94
which library do you finally use?
I supposed that from first post @bucknall - but there is not line like you show

[scg94]

@livius

I already tried with both, look at the error...

>>> urequest.request("POST","http://50.23.124.68/api/v1.6/devices/rasxxxxx?token=xxxxxxxxxxx",'{"temperatura_rpi":' + str(500)+'}')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/flash/lib/urequest.py", line 53, in request
OSError: 23
>>> 

And in the line 53 in library urequest.py is:

s = usocket.socket()

Thanks for your help...

[livius]

@scg94 said in Send data requests http post.:
third parameter must be buffered
e.g. string or bytes
you can not send dictionary

{"temperatura_rpi": bytes(500)}

do you try to send string?
if yes then concat it

'{"temperatura_rpi": 500}'

or if you have int variable

'{"temperatura_rpi": ' + str(int_var) + '}'

[scg94]

@livius Hi,

I tried with this and look at the result ...

>>> datos={"temperatura_rpi": 500}
>>> data=bytes([datos])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: cant convert dict to int
>>> urequest.request("POST" ,"http://50.23.124.68/api/v1.6/devices/raspxxx?token=xxxxxxxxx",{"temperatura_rpi": bytes(500)})
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/flash/lib/urequest.py", line 74, in request
TypeError: object with buffer protocol required
>>>

Can you help me?? Thank u...

[livius]

@scg94
cast data as bytes

urequest.request("POST", url, bytes([your_data])

or create it at start as buffered

[scg94]

@bucknall Hello again,

I think I'm slowly solving things, what I did was change the domain name by IP, and now it works, but I have an error again with the library, this time it speaks of: "TypeError: object with buffer protocol required"...

Do you know what it is about?