Error 401 Arduino ESP8266

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Ctreb
Ctreb 2020-1-18
评论： cog 2023-2-12
Hello,
I tried posting some values from my ESP8266 to thingspeak but it failed with an 401 error.
To be sure that the error was not in my code I tred loading the example code "WriteMultipleFields" with no changes, created a new channel and renewed the API key mulitple times.
This is the error message:
Connected.
ts::setField (field: 1 value: "0")
ts::setField (field: 2 value: "3")
ts::setField (field: 3 value: "31")
ts::setField (field: 4 value: "88")
ts::setStatus(status: field1 is less than field2")
Connect to default ThingSpeak: api.thingspeak.com:80...Success.
ts::writeFields (channelNumber: 964373 writeAPIKey: XXXXXXXXXXXXXXXX
Got Status of 200
Content Length: 1
Found end of header
Response: "0"
Entry ID "0" (0)
disconnected.
Problem updating channel. HTTP error code -401
Any suggestions on what could be wrong?

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采纳的回答

Vinod
Vinod 2020-1-22
Are you still seeing a '0' response code to your requests to update a channel?
  1 个评论
Ctreb
Ctreb 2020-1-22
Thanks, statuscode 2 now and updtes works as expected.

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更多回答（5 个）

Christopher Stapels
编辑：Christopher Stapels 2020-1-22
Are you able to update your channel from a web browser?
Use the format
https://api.thingspeak.com/update?api_key=xxxxxxxxxxxxxxxx$field1=432
On the Error Codes page you can see the 401 is authorization required. Since ThingSpeak has a lot of API keys, it is possible that you grabbed the wrong key. Be sure its the channel write api key from the api keys tabl of the channel view.
Let us know if that works. If not, we can look into it further.
Ctreb
Ctreb 2020-1-21
Hello,
Response code 0 and no update.
David Bird
David Bird 2020-3-23
编辑：David Bird 2020-3-23
Hello,
I'm also getting 401 authriosation errors when using the Bulk update API:
The delta-time version works OK:
{
"write_api_key": "WRITE_API_KEY",
"updates": [{
"delta_t": 4,
"field1": 1.0,
"field2": "2.0"
},
{
"delta_t": 2,
"field1": 1.1,
"field2": 2.2,
"elevation": 6,
"status": "Good"
}
]
}
But the absolute time version does not:
{
"write_api_key": "WRITE_API_KEY",
"updates": [{
"created_at": "2020-03-23 09:26:02 -0000",
"field1": "1.0",
"field2": "2.0"
},
{
"created_at": "2020-03-23 10:27:27 -0000",
"field1": "1.1",
"field2": "2.2",
}
]
}
The JSON response from the server is:
{"status":"401","error":{"error_code":"error_auth_required","message":"Authorization Required","details":"Please provide proper authentication details."}}
So in the delta time version the Channel ID and Write key are correct and authorise, but in the absolute time variant they fail - it seems. I'm using
http://api.thingspeak.com/channels/channelID/bulk_update.json
I note others have seen the same problem. It looks like there is an API problem.
  1 个评论
Christopher Stapels
Christopher Stapels 2020-3-23
You have an extra comma in the second example:
"field2": "2.2",
should be
"field2": "2.2"
When I send it without to comma, it works. (with my write key and channel ID).
When I send it with the comma, I get a 400 error, not a 401. Can you check again and report if you are still seeing that error? We definitely want to be sure the correct error is returned.

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David Bird
David Bird 2020-3-23
Actually that was an example from the API and I deleted a field, thereby leaving that stray ',', sorry about that. Heres a copy of my upload:
{
"write_api_key": "WRITE_API_KEY",
"updates": [{
"created_at": "2020-03-23 19:01:26 -0000",
"field1": 20.0,
"field2": 51.7,
"field3": 1026
},
{
"created_at": "2020-03-23 19:02:28 -0000",
"field1": 20.1
"field2": 51.7
"field3": 1026
}
]
}
Which returns 401 authroisation required.
  7 个评论
显示 5更早的评论
David Bird
David Bird 2020-3-24
This is my POST request code:
if (client.connect(server, 80)) { // POST data to ThingSpeak
client.println("POST /channels/" + String(THINGSPEAK_CH_ID) + "/bulk_update.json HTTP/1.1"); // Replace YOUR-CHANNEL-ID with your ThingSpeak channel ID
client.println("Host: api.thingspeak.com");
client.println("User-Agent: mw.doc.bulk-update (Arduino ESP8266)");
client.println("Connection: close");
client.println("Content-Type: application/json");
client.println("Content-Length: " + String(jsonBuffer.length()));
client.println();
client.println(jsonBuffer);
}
Christopher Stapels
Christopher Stapels 2021-4-19
编辑：Christopher Stapels 2021-4-20
@David BirdYou seem to be missing the API key in the latest version just above.

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Cosimo Carbonelli
Cosimo Carbonelli 2020-7-25
Sorry I have the same problem.
The content that i send through a POST to https://api.thingspeak.com/channels/MYCHANNELID/bulk_update.json is
{
"write_api_key": "MYAPIKEY",
"updates": [{
"created_at": "2020-07-24 11:34:28 -0738",
"field2": -68,
"field3": 25.4,
"field4": 1005,
"field5": 118,
"field6": 0,
"field7": 0
}]
}
and the error that I get is
{
"status": "401",
"error": {
"error_code": "error_auth_required",
"message": "Authorization Required",
"details": "Please provide proper authentication details."
}
}
but if I made GET requests using
https://api.thingspeak.com/update?api_key=MYAPIKEY&field5=118
it's all right.
What's wrong?
many thanks
Cosimo
  2 个评论
Cosimo Carbonelli
Cosimo Carbonelli 2020-7-26
Hi,
I found by myself the answer.
The problem was in the way I have built the json variable (in my Node RED environment). So it was a JavaScript problem and not a ThingSpeak API problem.
sorry
Cosimo
cog
cog 2023-2-12
Cosimo, what was it about how you were building the JSON that was causing the error?

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