Example for Streaming HTTPS not connecting after get request #7477
Description
- Hardware: [NodeMCU 1.0 ESP-12E]
- Core Version: [2.7.2]
- Development Env: [Arduino IDE]
- Operating System: [Windows10]
Settings in IDE
- Module: [Nodemcu]
- Flash Mode: [dio]
- Flash Size: [4MB/1MB]
- lwip Variant: [v2 Lower Memory]
- Reset Method: [ck|nodemcu]
- Flash Frequency: [40Mhz]
- CPU Frequency: [80Mhz]
- Upload Using: [SERIAL]
- Upload Speed: [115200]
Problem Description
I was just trying to run the streaming HTTPS example of the https client and keep getting the error:
"Connection failed"
I would really like some help explaining what I am doing wrong or if this is a problem with the example.
Thanks in advance
#include <Arduino.h>
/**
StreamHTTPClient.ino
Created on: 24.05.2015
*/
#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>
#include <ESP8266HTTPClient.h>
ESP8266WiFiMulti WiFiMulti;
void setup() {
Serial.begin(115200);
// Serial.setDebugOutput(true);
Serial.println();
Serial.println();
Serial.println();
for (uint8_t t = 4; t > 0; t--) {
Serial.printf("[SETUP] WAIT %d...\n", t);
Serial.flush();
delay(1000);
}
WiFi.mode(WIFI_STA);
WiFiMulti.addAP("Hogwarts", "Alohomora6444");
}
void loop() {
// wait for WiFi connection
if ((WiFiMulti.run() == WL_CONNECTED)) {
std::unique_ptr<BearSSL::WiFiClientSecure> client(new BearSSL::WiFiClientSecure);
bool mfln = client->probeMaxFragmentLength("tls.mbed.org", 443, 1024);
Serial.printf("\nConnecting to https://tls.mbed.org\n");
Serial.printf("Maximum fragment Length negotiation supported: %s\n", mfln ? "yes" : "no");
if (mfln) {
client->setBufferSizes(1024, 1024);
}
Serial.print("[HTTPS] begin...\n");
// configure server and url
const uint8_t fingerprint[20] = {0xEB, 0xD9, 0xDF, 0x37, 0xC2, 0xCC, 0x84, 0x89, 0x00, 0xA0, 0x58, 0x52, 0x24, 0x04, 0xE4, 0x37, 0x3E, 0x2B, 0xF1, 0x41};
client->setFingerprint(fingerprint);
HTTPClient https;
if (https.begin(*client, "https://tls.mbed.org/")) {
Serial.print("[HTTPS] GET...\n");
// start connection and send HTTP header
int httpCode = https.GET();
if (httpCode > 0) {
// HTTP header has been send and Server response header has been handled
Serial.printf("[HTTPS] GET... code: %d\n", httpCode);
// file found at server
if (httpCode == HTTP_CODE_OK) {
// get lenght of document (is -1 when Server sends no Content-Length header)
int len = https.getSize();
// create buffer for read
static uint8_t buff[128] = { 0 };
// read all data from server
while (https.connected() && (len > 0 || len == -1)) {
// get available data size
size_t size = client->available();
if (size) {
// read up to 128 byte
int c = client->readBytes(buff, ((size > sizeof(buff)) ? sizeof(buff) : size));
// write it to Serial
Serial.write(buff, c);
if (len > 0) {
len -= c;
}
}
delay(1);
}
Serial.println();
Serial.print("[HTTPS] connection closed or file end.\n");
}
} else {
Serial.printf("[HTTPS] GET... failed, error: %s\n", https.errorToString(httpCode).c_str());
}
https.end();
} else {
Serial.printf("Unable to connect\n");
}
}
Serial.println("Wait 10s before the next round...");
delay(10000);
}Debug Messages
19:49:31.422 -> [SETUP] WAIT 3...
19:49:32.442 -> [SETUP] WAIT 2...
19:49:33.428 -> [SETUP] WAIT 1...
19:49:34.925 ->
19:49:34.925 -> Connecting to https://tls.mbed.org
19:49:34.925 -> Maximum fragment Length negotiation supported: yes
19:49:34.959 -> [HTTPS] begin...
19:49:34.959 -> [HTTPS] GET...
19:49:38.330 -> [HTTPS] GET... failed, error: connection failed
19:49:38.330 -> Wait 10s before the next round...
19:49:48.778 ->
19:49:48.778 -> Connecting to https://tls.mbed.org
19:49:48.778 -> Maximum fragment Length negotiation supported: yes
19:49:48.778 -> [HTTPS] begin...
19:49:48.778 -> [HTTPS] GET...
19:49:49.390 -> [HTTPS] GET... failed, error: connection failed
19:49:49.390 -> Wait 10s before the next round...
19:49:59.806 ->