Questions tagged [http]

Hypertext Transfer Protocol (HTTP) is an application level network protocol that is used for the transfer of content on the World Wide Web.

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188 views

Sim808 module HTTP Bad request

I have an Arduino UNO and sim808 EVB-V3.02.4. I want to send a GET request to my url but I always receive 400 Http bad request error. #include <DFRobot_sim808.h> #include <SoftwareSerial.h&...
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175 views

Arduino Mega failing to connect to XAMPP database/php server to send HTTP requests

I have developed an application with a SunFounder Mega2560 with a W5100 Ethernet shield that acts as a server and successfully parses TCP message packets from a client sending in updates. I am now ...
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137 views

Send ECG data using buffer in real time to the server without using delay

I am trying to make a ECG monitoring system using Arduino, GSM and ECG sensor which data should be sent to the private server in real time. Those data are then collected via Matlab on the remote ...
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3answers
864 views

SIM800L HTTP request is not reliable

I have a question regarding SIM800L and HTTP GET request. I'm using this https://exploreembedded.com/wiki/Setting_up_GPRS_with_SIM800L simple code to communicate with SIM800l with AT commands. To ...
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2k views

Parsing the data from an HTTP POST request on a ESP8266 / wemos

I'm sending an HTTP Post request on my Android App to my Wemos D1 mini pro and want to parse the incoming data (which is a json). My current code just prints out the whole POST request and I need to ...
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594 views

Send HTTP request from Arduino UNO+ESP8266

I am trying to send an HTTP request from from an Arduino UNO through an ESP-01 connected by Serial. Communication with the ESP and connection to the AP work fine. But when i try to send an HTTP ...
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44 views

HTTP request is not being executed in Arduino script for sending sensor data to Thingspeak cloud

I am trying to send the data from DHT sensor (temperature and humidity on 2 channels of Thingspeak cloud server) and firstly display them on Thingspeak cloud. Afterwards I will need to get those data ...
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1answer
277 views

Arduino HTTP Request Fails Slow Cellular Connection

Setup: Arduino Mega 2560 w/ Wiznet W5500 Ethernet Sheild Using TP-Link TL-MR6400 LTE router to connect to internet over cellular connection in Uganda. Using an HTTP Post with the following, ...
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57 views

Is there a simple HTTP(S) library that doesn't rely on WiFi?

I'm trying to implement a Mobile Network (only) for the ESP32 using Arduino IDE. So to be able to connect to website up/download files etc. I need to be able to handle various HTTP PUT/GET/POST ...
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1answer
491 views

Mkr1010 disconnects and reconnects normally until it reaches a point where it never reconnects again

The board does reconnect from time to time, but there are times where it just disconnects and never reconnects again and I can't replicate the error because while I run it with Serial open and turn ON ...
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1answer
245 views

Can we call GPRS HTTP request asynchronously in Arduino?

Usually GPRS modules (SIM800,900, A6, etc) that used with arduino are called in synchronous way in HTTP (GET/POST) request. It takes more than 10 seconds in most times and this makes the system very ...
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1k views

how can i send get and post request from esp01 using arduino uno

I am using an esp8266 01 module with the Arduino Uno to establish a communication between the Arduino and my web site. I actually don't know how to send Rest HTTP requests from the Arduino to get data ...
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1answer
318 views

PUT request: PHP code to Arduino HTTPClient

I'm uploading a file to Azure blob storage using REST API request. The file uploaded successfully using PHP curl request. But when I transfer the code into ESP32 HTTP client I'm getting an ...
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0answers
46 views

Error with AT+CIPSEND in ES8266 with arduino

I'm making simple web-server on esp8266 module connected to Arduino. And when +IPD,0,GET... I'm sending AT+CIPSEND=0,16. Then I write HELLOMYDEARFRIDE. It says : send 16 bytes recived. OK. But in ...
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372 views

Is it possible to do an OTA update using a GitHub link

I need to be able to download software updates through the internet without having my MKR1000 plugged in. Either that or have new code being pushed from my server (C++) to my MKR1000, and then ...
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225 views

ESP8266 webserver does not return latest HTTP response

I tried getting a HTTP response from an ESP8266 which is in HTTP server mode, I am getting a response but not the latest one, response is always one command previous to that of my request to the ESP. ...
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334 views

HTTP and HTTPS server at the same time

I'm trying to set up a HTTP and HTTPS server at the same time on an ESP8266 NodeMCU V3. The compiler however doesn't accept any other name than client otherwise no new clients will be catched. But ...
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461 views

ESP8266 official library post request returns 400

Every time I try the post request I get a 400 error but the JSON and URL are identical to those that I used on an online API tester and it worked every time there. I am running this program in the ...
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698 views

creating HTTP persistent connection, to create 'smooth' data over GSM sending

Project goals Send data over GSM to firebase Fast sampling - need to send 16 bytes every half second to firebase Send data using GET or POST to server with PHP script, that redirect data to firebase ...
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0answers
652 views

Cannot POST to server. HTTP code -1. NodeMCU

I am trying to make a POST request with NodeMCU, but I get a HTTP status code -1. Code: #include <ESP8266HTTPClient.h> #include <ESP8266WiFi.h> #ifndef STASSID #define STASSID "Wifi" #...
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1answer
6k views

How to compose an HTTP GET request URL with key/value parameters

I am experimenting with some code running on an ESP8266 board to retrieve data using a web API. I would like to store the host address and key/value parameters (API key etc.) of the GET request as ...
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1answer
90 views

HTTP myphp request error RFID

This program is a program which readings of rfid are saved to myphp database. I have a problem when running the code The wifi is connected but when the code doesn't save im assuming that the problem ...
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0answers
168 views

ESP8266 http.get() issue due to wifi authentication failure

Facing a weird issue while reading data from esp8266. I am trying to read dynamic data from a demo text file on test server on same network in deep sleep mode. Case1: Joining new network I am using ...
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1answer
2k views

ESP8266 HTTPS post body request with WifiClientSecure

Is there a way to post HTTPS body request in Arduino esp8266. I am able to HTTPS parameter request with WifiClientSecure library,but is not safe compared to Request Body send in POST.
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2k views

Arduino HTTP post image to external server

I'm trying to send an image from SPIFFS to my external server. When pictures are taken, they are saved into "/pics/" directory within SPIFFS. Ultimately, I'd like to post all the images saved onto "/...
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2answers
3k views

Parse a large json response with ESP8266

I'm doing a project where my Arduino uses an external ESP8266 wifi module (with AT firmware) to send http requests and receive server response. I'm trying to get an NBA scoreboard, and here's what my ...
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175 views

Arduino ESP8266 ESP-01S GET command

Looking for some help on this please. It is a little long winded, but the point of it is I cannot retrieve a string response via my ESP8266 ESP-01S. I connect my ESP to my Ardiuno using ...
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1answer
54 views

Connecting NodeMCU through internet [closed]

I have a NodeMCU and a website (free website domain provided by http://www.hpage.com) and I have to send and receive some data (suppose a 8bit number) from the website to the NodeMCU via internet. The ...
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33 views

Not able to receive string from database

A few days ago I posted a thread as I was not being able to send data to my database online. It worked when I changed the GPS module. Now I am trying to retrieve data from the same Server and i'm not ...
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2answers
443 views

Arduino SIM5320e HTTP GET request to 000webhost.com

Im having trouble getting a successful HTTP GET request to a domain under 000webhost.com I am trying to do a GET request which sends data to a php file on my domain and save it to MySQL database. I ...
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1answer
1k views

HTTP PUT method on NodeMCU/ESP8266

I've been trying to send a put request from my esp8266 for a while not but I can't figure out why it doesn't work and there are barely any posts about put requests online I keep getting errors around ...
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1answer
701 views

How to handle concurrent HTTP request when using interrupt

I'm trying to make a door sensor with a reed switch. Each time the there is a change, the ESP8266 sends an HTTP request to web service. Unfortunately, the ESP8266 serial monitor dumps a huge stack ...
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1k views

error 404 in HTTP GET request with Arduino Uno and ESP8266 using AT commands

when I try to send http get request I get error 404 AT+CIPMTX=1 OK AT+CIPSTART=4,"TCP","alirezaabrhshami.ir",80 4,CONNECT OK AT⸮⸮R5U9⸮⸮b⸮⸮j OK > Recv 47 qytes SEND OK +IPD,4,223;HTTP/1.1 404 Not ...
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1answer
558 views

Can't extract basic data using ThingspeakHTTP

I don't know anything about HTML, but I want to extract the % probability of the Northern lights being visible from this webpage http://aurorawatch.ca/. I entered this into the URL field, and selected ...
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1answer
8k views

HTTP get request using Arduino Uno and ESP8266

I have an Arduino Uno and an ESP8266 and I want to send a HTTP get request to google.com and print the response. Please help me thanks.
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1answer
4k views

Faster way to parse a HTTP response in Arduino

I send a GET http request to a server and get following data back. HTTP/1.1 200 Content-Type: application/json;charset=UTF-8 Transfer-Encoding: chunked Date: Fri, 16 Nov 2018 16:30:05 GMT Connection:...
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1answer
973 views

How to build a valid HTTP Response. Recv failure: Connection reset by peer

I'm developing an Arduino server that should respond with a message when it receives a POST Request. If I test my project with a HTTP Client (like insomnia or postman), I get an error: Error: ...
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1answer
2k views

How to HTTP post a data to Node express API from a Arduino esp8226?

I am HTTP posting a data to this web API https://morning-cliffs-85779.herokuapp.com/api/users from an Arduino connected to esp8226. I am using the wifiesp library to HTTP_POST data. The REST APIs are ...
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1answer
673 views

ESP8266 upload data to google cloud platform

I am trying to upload information to my appspot created with Google App Engine. I am able to do it when I in my browser type: http://myname.appspot.com/query?city=Copenhagen&temp=20&id=website ...
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321 views

HTTP GET fails from ESP8266 to Emoncms [closed]

I've tried the code with emoncms.org as well and the results are identical; one parameter posts fine, but when I include the second parameter in the JSON I get HTTP 400 Bad Request from nginx and I'm ...
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1answer
505 views

How to establish a connection between an Arduino and a web server via ESP8266 [duplicate]

I'm working on a IOT project where three or more IOT device communicates with a web server. The IoT device will have Arduino UNO which is connected to a ESP8266 so internet access is available. ...
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1answer
1k views

HTTP post via GPRS (SIM808) to Azure http endpoint logic app is failing

I am using a SIM808 with a atmega2560. I have setup the endpoint in Azure and that works when I try a http post via postman and/or an online http post tool (I get a 202 as result and see data comming ...
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1answer
1k views

How to configure TinySine 3G module (SIM5320E) for HTTP GET request

I recently bought a 'TinySine 3G shield (SIM5320E) 900/2100Mhz' based on Adafruit_FONA libraries to use with Arduino Mega 2560 R3. It successfully registered with Vodafone AU. Other functionality ...
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1answer
1k views

Problem with html code in ESP8266 WebServer

Here I have a small problem: I have an ESP8266, to which I have connected a matrix of LEDs to move text (the array of LEDs is made with the tape of LEDs addressable ws2812); when you turn on the ...
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2answers
924 views

ESP8266HTTPClient conflict with other libraries?

I can successfully send a GET request with the ESP8266HTTPClient library in the first sketch. However the exactly same code won't work when used in the second sketch, which is more complex and uses ...
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1answer
2k views

ESP8266 GET request code -1

I've read several other posts but I still couldn't solve the issue. I'm trying to connect to a website which is HTTP (not HTTPS) but I always get code -1 as response. If I open the link in the browser ...
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1answer
1k views

POST request on Arduino MKR1400 GSM not working

Im trying to send a POST request from the Arduino MKR1400 GSM board to a server with a database. I've tested the server using Postman (https://www.getpostman.com/) and it handles the POST request ...
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1answer
216 views

Posting TinyGPS++ co-ordinates as paramaters with GPRS

I'm able to view my co-ords on the Serial Monitor using Serial.println(gps.location.lat(), 6); I believe the data type returned by gps.location.lat() is double. I need to pass this value to a ...
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1answer
90 views

Correct way of having loop end when required?

I'm brand new to Arduinos. I'm currently trying to modify a script from here which at the moment, simply turns an LED on or off depending on which HTTP GET request it receives. However, I want to ...
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1answer
727 views

Replying with a html page in HTTP Web Server using esp01 and ArduinoIDE

Now there are many ways to reply with a webpage content to a user who is accessing the web server, But Keeping in mind to use as less space as possible, I was trying something new, Since i didnt got ...