Hello everyone.
I am searching for one example with this library. I found only one example:
AsyncDweetPost_STM32.ino
But deeping the the sample code i see that really is not posting, is a GET request. Adding data to the URL.
const char POST_ServerAddress[] = "dweet.io";
String dweetName = "/dweet/for/pinA0-Read?";
String postData = "sensorValue=";
requestOpenResult = request.open("POST", (POST_ServerAddress + dweetName + postData).c_str() );The result is "dweet.io/dweet/for/pinA0-Read?sensorValue=" (all data in the URL, so is a GET.
I need send about 3k of data in post.
Thanks to all
Christian
I put the complete code here.
/****************************************************************************************************************************
AsyncDweetPOST_STM32.ino - Dead simple AsyncHTTPRequest for ESP8266, ESP32 and currently STM32 with built-in LAN8742A Ethernet
For ESP8266, ESP32 and STM32 with built-in LAN8742A Ethernet (Nucleo-144, DISCOVERY, etc)
AsyncHTTPRequest_Generic is a library for the ESP8266, ESP32 and currently STM32 run built-in Ethernet WebServer
Based on and modified from asyncHTTPrequest Library (https://github.com/boblemaire/asyncHTTPrequest)
Built by Khoi Hoang https://github.com/khoih-prog/AsyncHTTPRequest_Generic
Licensed under MIT license
Copyright (C) <2018> <Bob Lemaire, IoTaWatt, Inc.>
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License
as published bythe Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
*****************************************************************************************************************************/
// Dweet.io POST client. Connects to dweet.io once every ten seconds, sends a POST request and a request body.
// Shows how to use Strings to assemble path and body
#include "defines.h"
// Select a test server address
const char POST_ServerAddress[] = "dweet.io";
// use your own thing name here
String dweetName = "/dweet/for/pinA0-Read?";
#define ASYNC_HTTP_REQUEST_GENERIC_VERSION_MIN_TARGET "AsyncHTTPRequest_Generic v1.10.2"
#define ASYNC_HTTP_REQUEST_GENERIC_VERSION_MIN 1010002
// 600s = 10 minutes to not flooding, 60s in testing
#define HTTP_REQUEST_INTERVAL_MS 60000 //600000
// Uncomment for certain HTTP site to optimize
//#define NOT_SEND_HEADER_AFTER_CONNECTED true
// To be included only in main(), .ino with setup() to avoid `Multiple Definitions` Linker Error
#include <AsyncHTTPRequest_Generic.h> // https://github.com/khoih-prog/AsyncHTTPRequest_Generic
#include <Ticker.h> // https://github.com/sstaub/Ticker
AsyncHTTPRequest request;
void sendRequest(void);
// Repeat forever, millis() resolution
Ticker sendHTTPRequest(sendRequest, HTTP_REQUEST_INTERVAL_MS, 0, MILLIS);
void sendRequest(void)
{
static bool requestOpenResult;
if (request.readyState() == readyStateUnsent || request.readyState() == readyStateDone)
{
String postData = "sensorValue=";
postData += analogRead(A0);
Serial.println("\nMaking new POST request");
requestOpenResult = request.open("POST", (POST_ServerAddress + dweetName + postData).c_str() );
if (requestOpenResult)
{
// Only send() if open() returns true, or crash
request.send();
}
else
{
Serial.println("Can't send bad request");
}
}
else
{
Serial.println("Can't send request");
}
}
void parseResponse(String responseText)
{
/*
Typical response is:
{"this":"succeeded",
"by":"getting",
"the":"dweets",
"with":[{"thing":"my-thing-name",
"created":"2016-02-16T05:10:36.589Z",
"content":{"sensorValue":456}}]}
You want "content": numberValue
*/
// now parse the response looking for "content":
int labelStart = responseText.indexOf("content\":");
// find the first { after "content":
int contentStart = responseText.indexOf("{", labelStart);
// find the following } and get what's between the braces:
int contentEnd = responseText.indexOf("}", labelStart);
String content = responseText.substring(contentStart + 1, contentEnd);
Serial.println(content);
// now get the value after the colon, and convert to an int:
int valueStart = content.indexOf(":");
String valueString = content.substring(valueStart + 1);
int number = valueString.toInt();
Serial.print("Value string: ");
Serial.println(valueString);
Serial.print("Actual value: ");
Serial.println(number);
}
void requestCB(void* optParm, AsyncHTTPRequest* request, int readyState)
{
(void) optParm;
if (readyState == readyStateDone)
{
Serial.println();
AHTTP_LOGDEBUG(F("**************************************"));
AHTTP_LOGDEBUG1(F("Response Code = "), request->responseHTTPString());
if (request->responseHTTPcode() == 200)
{
String responseText = request->responseText();
Serial.println("\n**************************************");
//Serial.println(request->responseText());
Serial.println(responseText);
Serial.println("**************************************");
parseResponse(responseText);
request->setDebug(false);
}
else
{
AHTTP_LOGERROR(F("Response error"));
}
}
}
void setup(void)
{
Serial.begin(115200);
while (!Serial && millis() < 5000);
Serial.print("\nStart AsyncDweetPOST_STM32 on ");
Serial.println(BOARD_NAME);
Serial.println(ASYNC_HTTP_REQUEST_GENERIC_VERSION);
#if defined(ASYNC_HTTP_REQUEST_GENERIC_VERSION_MIN)
if (ASYNC_HTTP_REQUEST_GENERIC_VERSION_INT < ASYNC_HTTP_REQUEST_GENERIC_VERSION_MIN)
{
Serial.print("Warning. Must use this example on Version equal or later than : ");
Serial.println(ASYNC_HTTP_REQUEST_GENERIC_VERSION_MIN_TARGET);
}
#endif
// start the ethernet connection and the server
// Use random mac
uint16_t index = millis() % NUMBER_OF_MAC;
// Use Static IP
//Ethernet.begin(mac[index], ip);
// Use DHCP dynamic IP and random mac
Ethernet.begin(mac[index]);
Serial.print(F("AsyncHTTPRequest @ IP : "));
Serial.println(Ethernet.localIP());
Serial.println();
request.setDebug(false);
request.onReadyStateChange(requestCB);
sendHTTPRequest.start(); //start the ticker.
}
void loop(void)
{
sendHTTPRequest.update();
}