I tried to test the request with ESP8266, I want the request to use
HTTPS but the request result is always 400 bad requests, so what makes
the code I write wrong ???
#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
#ifndef STASSID
#define STASSID "xxxxxxx"
#define STAPSK "xxxxxxxxx"
#endif
const char* ssid = "xxxxx";
const char* password = "xxxxxxxx";
const char* host = "webhook.site";
const int httpsPort = 443;
const char fingerprint[] PROGMEM = "09:F6:00:C3:67:B0:80:14:34:E3:08:D7:4A:64:20:85:83:F4:80:A1";
void setup() {
Serial.begin(115200);
Serial.println();
Serial.print("connecting to ");
Serial.println(ssid);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
// Use WiFiClientSecure class to create TLS connection
WiFiClientSecure client;
Serial.print("connecting to ");
Serial.println(host);
Serial.printf("Using fingerprint '%s'\n", fingerprint);
client.setFingerprint(fingerprint);
if (!client.connect(host, httpsPort)) {
Serial.println("connection failed");
return;
}
delay(500);
if (client.verify(fingerprint, host)) {
Serial.println("certificate matches");
} else {
Serial.println("certificate doesn't match");
}
delay(500);
String url = "/4cf42a06-5df4-4459-b8f3-5d29f1ed319d";
Serial.print("requesting URL: ");
Serial.println(url);
String request = String("GET ") + url + " HTTP/1.0 \r\n" +
"Host: " + host + "\r\n" +
"Accept: *" + "/" + "*\r\n" +
"User-Agent: BuilderFailureDetectorESP8266\r\n" +
"Connection: close\r\n\r\n";
Serial.println(request);
client.print(request);
Serial.println("request sent");
int waitcount = 0;
while (!client.available() && waitcount++ ) {
delay(10);
}
while(client.available()){
String line = client.readStringUntil('\r');
Serial.print(line);
}
while (client.connected()) {
String line = client.readStringUntil('\r');
Serial.println("headers received"+line);
if (line == "\r") {
Serial.println("headers received"+line);
break;
}
}
}
void loop() {
}
and the following is the output of the program above
connecting to xxxx
.....
WiFi connected
IP address:
192.168.1.13
connecting to webhook.site
Using fingerprint '09:F6:00:C3:67:B0:80:14:34:E3:08:D7:4A:64:20:85:83:F4:80:A1'
certificate matches
requesting URL: /4cf42a06-5df4-4459-b8f3-5d29f1ed319d
GET /4cf42a06-5df4-4459-b8f3-5d29f1ed319d HTTP/1.0
Host: webhook.site
Accept: */*
User-Agent: BuilderFailureDetectorESP8266
Connection: close
request sent
HTTP/1.0 400 Bad request
Cache-Control: no-cache
Connection: close
Content-Type: text/html
<html><body><h1>400 Bad request</h1>
Your browser sent an invalid request.
</body></html>
is there a problem with my code ? Can everyone help me ???...
I am looking for following examples from several posts on Google
HTTP can be very persnickety about whitespace. In your line
String request = String("GET ") + url + " HTTP/1.0 \r\n" +
there's an unnecessary space after HTTP/1.0. Remove the space and you should get past the "400 Bad request" response.
String request = String("GET ") + url + " HTTP/1.0\r\n" +
I want to connect to an url of a cloud function but isn´t working. someone can see the error? I´m working with an ESP8266 from arduino IDE. I try sending a POST request by postman and it function perfectly, I don´t understan what is the problem with the conection, i always try to connect with out the https and only with http and again in the esp8266 didn´t wotk but in postman does works fine, I do not understant why is this problem
#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
const char* ssid = "My wifi";
const char* password = "My Password";
const char* host = "https://us-central1-sensores4bad6.cloudfunctions.net/actualizar";
void setup() {
Serial.begin(9600);
delay(10);
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
int value = 0;
void loop() {
delay(5000);
++value;
Serial.print("connecting to ");
Serial.println(host);
WiFiClientSecure client;
const int httpPort = 443;
if (!client.connect(host, httpPort)) {
Serial.println("connection failed");
return;
}
client.print(String("POST ") + host + " HTTP/1.1\r\n" +
"Host: " + host + "\r\n" +
"Connection: close\r\n\r\n");
unsigned long timeout = millis();
while (client.available() == 0) {
if (millis() - timeout > 5000) {
Serial.println(">>> Client Timeout !");
client.stop();
return;
}
}
while (client.available()) {
String line = client.readStringUntil('\r');
Serial.print(line);
}
Serial.println();
Serial.println("closing connection");
}
Try removing the s in https. So:
const char* host = "http://us-central1-sensores4bad6.cloudfunctions.net/actualizar";
instead of
const char* host = "https://us-central1-sensores4bad6.cloudfunctions.net/actualizar";
I'm trying to connect to the nest_API (thermostat) using ESP8266 and the Arduino EDK. But so far with no result.
I've seen somebody asking the same question here before. But the answer to his problem didn't help me.
So here's my code:
Code
#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
const char* ssid = "xxxxx";
const char* password = "xxxxx";
const char* host = "developer-api.nest.com";
const int httpsPort = 443;
const char* BearerKey = "xxxxxxxuB0QSbgw2nsT85dJEHRpwvR7rSyrLHm2E54QpC9vnSzB5PV8OtGDPm0mAh96wgM0MwApmS";
//declaring GPIO's
int gpio13Led = 13;
int gpio12Relay = 12;
// Use web browser to view and copy
// SHA1 fingerprint of the certificate
const char* fingerprint = "87:CB:F2:E6:44:C0:AA:F2:4C:28:B2:97:85:70:18:92:45:1B:A4:57";
void setup() {
// preparing GPIOs
pinMode(gpio13Led, OUTPUT);
digitalWrite(gpio13Led, HIGH);
pinMode(gpio12Relay, OUTPUT);
digitalWrite(gpio12Relay, HIGH);
Serial.begin(115200);
Serial.println();
Serial.print("connecting to ");
Serial.println(ssid);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
// Use WiFiClientSecure class to create TLS connection
WiFiClientSecure client;
Serial.print("connecting to ");
Serial.println(host);
if (!client.connect(host, httpsPort)) {
Serial.println("connection failed");
return;
}
if (client.verify(fingerprint, host)) {
Serial.println("certificate matches");
digitalWrite(gpio13Led, LOW);
} else {
Serial.println("certificate doesn't match");
}
String url = "/";
Serial.print("requesting URL: ");
Serial.println(url);
client.print(String("GET ") + url + " HTTP/1.1\r\n" +
"Host: " + host + "\r\n" +
"Content-Type: application/json\r\n" +
"Authorization: Bearer " + BearerKey + "\r\n\r\n"
);
Serial.println("request sent");
while (client.connected()) {
String line = client.readStringUntil('\n');
Serial.println(line);
if (line == "\r") {
Serial.println("headers received");
break;
}
}
while (client.available()) {
String line = client.readStringUntil('\n');
Serial.println("reply was:");
Serial.println("==========");
Serial.println(line);
Serial.println("==========");
Serial.println("closing connection");
}
}
void loop() {
}
I never get any result from the server. But when I'm using postman, it works. So I wonder. Do I need to use the "host: " + host + ... line?
And is there a way to catch some errors with the WiFiClientSecure.h library.
I also once changed the url for host in the get string.
Then I received one error from the server. I was already happy there was a response after all.
Serial output
connecting to xxxxx
........
WiFi connected
IP address:
xxxxx
connecting to developer-api.nest.com
certificate matches
requesting URL: /
request sent
HTTP/1.1 307 Temporary Redirect
Content-Type: application/json; charset=UTF-8
Access-Control-Allow-Origin: *
Cache-Control: private, no-cache, no-store, max-age=0
Pragma: no-cache
Location: https://firebase-apiserver10-tah01-iad01.dapi.production.nest.com:9553/
Connection: close
Authorization: Bearer xxxxx
content-length: 0
headers received
reply was:
==========
==========
closing connection
Now I'm completely stuck. It would be nice if somebody could help me further out. thx
Wow. Holy smoke! I've got a response! You're tip made it work #gre_gor.
I've changed the host name and the port because my reply said something like this.
Here's my final code:
CODE:
#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
const char* ssid = "xxxxx";
const char* password = "xxxxx";
const char* host = "firebase-apiserver10-tah01-iad01.dapi.production.nest.com";
const int httpsPort = 9553; //443;
const char* BearerKey = "xxxxx";
//declaring GPIO's
int gpio13Led = 13;
int gpio12Relay = 12;
// Use web browser to view and copy
// SHA1 fingerprint of the certificate
const char* fingerprint = "87:CB:F2:E6:44:C0:AA:F2:4C:28:B2:97:85:70:18:92:45:1B:A4:57";
void setup() {
// preparing GPIOs
pinMode(gpio13Led, OUTPUT);
digitalWrite(gpio13Led, HIGH);
pinMode(gpio12Relay, OUTPUT);
digitalWrite(gpio12Relay, HIGH);
Serial.begin(115200);
Serial.println();
Serial.print("connecting to ");
Serial.println(ssid);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
// Use WiFiClientSecure class to create TLS connection
WiFiClientSecure client;
Serial.print("connecting to ");
Serial.println(host);
if (!client.connect(host, httpsPort)) {
Serial.println("connection failed");
return;
}
if (client.verify(fingerprint, host)) {
Serial.println("certificate matches");
digitalWrite(gpio13Led, LOW);
} else {
Serial.println("certificate doesn't match");
}
String url = "/";
Serial.print("requesting URL: ");
Serial.println(url);
client.print(String("GET ") + url + " HTTP/1.1\r\n" +
"Host: " + host + "\r\n" +
"Content-Type: application/json\r\n" +
"Authorization: Bearer " + BearerKey + "\r\n\r\n"
);
Serial.println("request sent");
while (client.connected()) {
String line = client.readStringUntil('\n');
Serial.println(line);
if (line == "\r") {
Serial.println("headers received");
break;
}
}
while (client.available()) {
String line = client.readStringUntil('\n');
Serial.println("reply was:");
Serial.println("==========");
Serial.println(line);
Serial.println("==========");
Serial.println("closing connection");
}
}
void loop() {
}
Serial monitor:
connecting to xxxxx
...........
WiFi connected
IP address:
xxxxx
connecting to firebase-apiserver10-tah01-iad01.dapi.production.nest.com
certificate doesn't match
requesting URL: /
request sent
HTTP/1.1 200 OK
Content-Type: application/json; charset=UTF-8
Access-Control-Allow-Origin: *
Cache-Control: private, no-cache, no-store, max-age=0
Pragma: no-cache
Connection: close
content-length: 8060
headers received
reply was:
==========
{"devices":{"thermostats":{"exxx":{"humidity":40,"locale":"nl-NL","temperature_scale":"C","is_using_emergency_heat":false,"has_fan":false,"software_version":"5.6.6-4","has_leaf":true,"where_id":"YygkopgUUc_cIFnCNG7GRDIIQnENO0ScVx9Pa78qfG7XyH-9WDdVgA","device_id":"e97ayjdpIOkPa4vZFxHggZMXiHKfhsyU","name":"Downstairs","can_heat":true,"can_cool":false,"target_temperature_c":15.0,"target_temperature_f":59,"target_temperature_high_c":24.0,"target_temperature_high_f":75,"target_temperature_low_c":20.0,"target_temperature_low_f":68,"ambient_temperature_c":15.5,"ambient_temperature_f":61,"away_temperature_high_c":24.0,"away_temperature_high_f":76,"away_temperature_low_c":8.5,"away_temperature_low_f":48,"eco_temperature_high_c":24.0,"eco_temperature_high_f":76,"eco_temperature_low_c":8.5,"eco_temperature_low_f":48,"is_locked":false,"locked_temp_min_c":20.0,"locked_temp_min_f":68,"locked_temp_max_c":22.0,"locked_temp_max_f":72,"sunlight_correction_active":false,"sunlight_correction_enabled":true,"structure_id":"vEJb634MNif-xxx{"access_token":"xxxx","client_version":2,"user_id":"xxxx"}}
==========
closing connection
The weird thing is that my fingerprint doesn't match but that it still proceeds to give me information.
Next step is to read this response and use the data I want. :-)
I'm trying to send a standard http GET request to my website using the NodeMCU example client code however for some reason it is not working.
If I type into my browser: snackrefill.com/GetData.php?username=aaaa&pin=bbbb&cost=cccc then it will successfully connect with the php script and save a data base entry.
The problem is that when I try to do the same using the NodeMCU module it does not work. it seems to be connecting to WiFi and the server just fine but when it sends the request nothing seems to happen.
Am I structuring my request wrong?
#include <ESP8266WiFi.h>
const char* ssid = "BELL473";
const char* password = "XXXXXXX";
const char* host = "ns8451.hostgator.com";
void setup() {
Serial.begin(115200);
delay(10);
// We start by connecting to a WiFi network
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password); //works!
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
int value = 0;
void loop() {
delay(5000);
++value;
Serial.print("connecting to ");
Serial.println(host);
// Use WiFiClient class to create TCP connections
WiFiClient client;
const int httpPort = 80;
if (!client.connect(host, httpPort)) { //works!
Serial.println("connection failed");
return;
}
// We now create a URI for the request
String url = "/GetData.php";
url += "?username=";
url += "aaaa";
url += "&pin=";
url += "bbbb";
url += "&cost=";
url += "cccc";
Serial.print("Requesting URL: ");
Serial.println(url);
// This will send the request to the server
client.print(String("GET ") + url + " HTTP/1.1\r\n" +
"Host: " + host + "\r\n" +
"Connection: close\r\n\r\n");
Serial.println();
Serial.println("closing connection");
}
The reason it was not sending was because the host was wrong, i was pointing to my website nameserver when i should have pointed it to the regular website name. I changed const char* host = "ns8451.hostgator.com"; to const char* host = "snackrefill.com"; and now it works!
I have a problem, i execute this simple code - send an http request :
include <ESP8266WiFi.h>
//Router 1 - Livebox
const char* ssid = "Livebox-9e38";
const char* password = "xxxxxxxxxxx";
//Router 2 - Android phone
//const char* ssid = "DARKSIDE";
//const char* password = "xxxxxxxxx";
// server address:
char server[] = "www.arduino.cc";
//IPAddress server(64,131,82,241);
WiFiClient client;
unsigned long lastConnectionTime = 0; // last time you connected to the server, in milliseconds
const unsigned long postingInterval = 10L * 1000L; // delay between updates, in milliseconds
void setup() {
Serial.begin(115200);
delay(10);
// We start by connecting to a WiFi network
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
void httpRequest() {
// close any connection before send a new request.
// This will free the socket on the WiFi shield
client.stop();
// if there's a successful connection:
if (client.connect(server, 80)) {
Serial.println("connecting...");
// send the HTTP PUT request:
client.println("GET /latest.txt HTTP/1.1");
client.println("Host: www.arduino.cc");
client.println("User-Agent: ArduinoWiFi/1.1");
client.println("Connection: close");
client.println();
// note the time that the connection was made:
lastConnectionTime = millis();
} else {
// if you couldn't make a connection:
Serial.println("connection failed");
}
}
void loop() {
// if there's incoming data from the net connection.
// send it out the serial port. This is for debugging
// purposes only:
while (client.available()) {
char c = client.read();
Serial.write(c);
}
// if ten seconds have passed since your last connection,
// then connect again and send data:
if (millis() - lastConnectionTime > postingInterval) {
httpRequest();
}
}
When I am on the router 2 (a simple hotspot router on a android phone) the code works.
When I am on the router 1 (a livebox supply by my internet provider), i have an IP address, i can see the ESP in the router (it's a web interface) but i can't get any result form the request (and i can't ping the module). The router don't route anything.
Of course the router have access to internet and from a computer connect to the router in wifi with the Curl command, the request work.
Have you some idea for me ?
try with these changes:
client.println("GET /latest.txt")
client.println( HTTP/1.1");
client.println("Host: www.arduino.cc");
client.println("User-Agent: ArduinoWiFi/1.1");
client.println("Connection: close");
client.println();
client.println("{\"on\":true}");