HTTP SSL client hangs when an access point goes down #5786
Assignees
Labels
waiting for feedback
Waiting on additional info. If it's not received, the issue may be closed.
Milestone
Comments
|
I made a simpler example, which works in 2.4.2 #include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
const char *host = "35.237.110.54";
const char *url = "/test/";
const int httpsPort = 443;
const char *fingerprint = "26 24 FA 2B 26 1D DD 1F 2F 12 68 7C 19 49 13 DF D3 8A 7D 65";
bool httpTest() {
WiFiClientSecure client;
client.allowSelfSignedCerts();
if (client.connect(host, httpsPort)) {
Serial.println("connection OK");
} else {
Serial.println("connection failed");
return false;
}
if (client.verify(fingerprint, host)) {
Serial.println("certificate matches");
} else {
Serial.println("certificate doesn't match");
}
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");
while (client.connected()) {
String line = client.readStringUntil('\n');
if (line == "\r") {
Serial.println("headers received");
break;
}
}
String line = client.readStringUntil('\n');
Serial.println("reply:");
Serial.println(line);
Serial.println("");
}
void setup() {
Serial.begin(115200);
Serial.setDebugOutput(true);
while (!Serial)
yield();
WiFi.begin();
}
void loop() {
if (WiFi.status() == WL_CONNECTED) {
httpTest();
} else {
Serial.println("Not connected");
}
}It works perfectly in 2.4.2 when I turn off my access point: But when I use 2.5.0 I found the same issue: stack trace: |
|
I experienced the same (or at least a very similar) issue with SW WDT resets when the WiFi connection is lost during the client.connect() call. Connecting to an url with a long response time generated this issue on a regular base. After quite a lot of testing, I was able to narrow down the root cause of my crashes to the WiFi loss during a WiFiClientSecure connection. I did not double-check if a WiFiClient connection is affected as well. With core revision and the decoded exception is It's interesting to note that using the current head revision as of today |
|
Hi, |
|
Please try the latest GIT head. #6065 included a fix that enables a fst SSL disconnect response and, I think, will error out quickly and not hang. Please report back so we can track. |
earlephilhower
added
the
waiting for feedback
|
The fix seems to be effective for the case "WiFi disconnects while SSL-connect is ongoing", I do no longer observe SW WDT resets. Using version The git head revision does no longer show the SW WDT resets since around begin of May. I used this sketch for reproducing the issue and testing the fix. A ticker disconnects the WiFi while the SSL-connect is ongoing. |
|
I found an interesting bug causing hang of WiFiClient and WiFiClientSecure which could be related - see #6104. |
Many many thanks, that solution works like a charm. I've been fighting this for weeks. Have made a workaround, but this solved my problem. I believe it can help many more people. |
|
All credit goes to @sislakd for this specific fix. I'll close this bug for now since it seems to have multiple confirmations. |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Platform
Settings in IDE
Problem Description
I see a constant Soft WDT reset/wdt reset when I am using HTTP SSL client and I turn off my access point.
Below code can work hours, but if I turn my access point, then ESP8266 hangs.
The issue is not reproducible if uncomment the 6 line:
MCVE Sketch
Debug Messages
Decoding stack results
The text was updated successfully, but these errors were encountered: