https post with ESP8266

[masoud935]

Platform

• Hardware: [NodeMCU 1.0-12E]
• Core Version: [2.7.2]
• Development Env: [Arduino IDE-1.8.13]
• Operating System: [Windows7-64bit]

Settings in IDE

• Module: [Nodemcu]
• Flash Mode: ***
• Flash Size: [4MB/1MB]
• lwip Variant: [v2 Lower Memory]
• Reset Method: ***
• Flash Frequency: [40Mhz]
• CPU Frequency: [160MHz]
• Upload Using: [SERIAL]
• Upload Speed: [115200] (serial upload only)

Problem Description

I loaded the sample library program on the nod.
But the connection to the website failed and I received an "connection failed
" error message.
This is exactly the example "ESP8266WiFi.h".
I even changed the fingerprint to new values, but it did not change.

#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>

#ifndef STASSID
#define STASSID ""
#define STAPSK "*****"
#endif

const char* ssid = STASSID;
const char* password = STAPSK;

const char* host = "api.github.com";
const int httpsPort = 443;

// Use web browser to view and copy
// SHA1 fingerprint of the certificate
const char fingerprint[] PROGMEM = "B4 F5 71 B4 C0 F3 41 62 77 35 05 AC B2 82 7D 75 C3 09 EF 08";

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;
}

String url = "/repos/esp8266/Arduino/commits/master/status";
Serial.print("requesting URL: ");
Serial.println(url);

client.print(String("GET ") + url + " HTTP/1.1\r\n" +
"Host: " + host + "\r\n" +
"User-Agent: BuildFailureDetectorESP8266\r\n" +
"Connection: close\r\n\r\n");

Serial.println("request sent");
while (client.connected()) {
String line = client.readStringUntil('\n');
if (line == "\r") {
Serial.println("headers received");
break;
}
}
String line = client.readStringUntil('\n');
if (line.startsWith("{"state":"success"")) {
Serial.println("esp8266/Arduino CI successfull!");
} else {
Serial.println("esp8266/Arduino CI has failed");
}
Serial.println("reply was:");
Serial.println("==========");
Serial.println(line);
Serial.println("==========");
Serial.println("closing connection");
}

void loop() {
}

### Debug Messages

Debug messages go here

[earlephilhower]

The fingerprint you've shown is not correct for api.github.com. Please use head and if the example doesn't work please submit a PR with the updated fingerprint. GitHub changes certs on an almost daily basis and fingerprints are not the best way to connect to them.

[earlephilhower]

Ah, I see you were running an unmodified example which has an old FP for API.GITHUB.COM. That example, HTTPSRequest.ino needs to be changed to just use the CA because GH seems to change their certs very frequently. Reopening as a real issue.

[masoud935]

I used the new Github fingerprint. But I still have a problem with this code.
Is there another solution to use the post method for https without using a fingerprint?

[earlephilhower]

For general coding issues, please use the forums at https://www.esp8266.com or Gitter https://gitter.im/esp8266/Arduino

[masoud935]

I used the new Github fingerprint. But I still have a problem with this code.
Is there another solution to use the post method for https without using a fingerprint?

@masoud935
Masoud jan lotfan be jaye fingerprint az certificate estefade kon ta tarikh enghezaye roozane nadashte bashe.
tanks. but...
1-man az fingerprint jadid estefade kardam vali bazam kar nemikone. yani mottasel nemishe.
2-lotfan nemone code certificate ke gofti ro bede. man chizi be in esm peyda nakardam.