esp8266 request esp8266 http server code -1 (Arduino IDE)

Question

two nodemcu device.

device1: create webserver and hotspot.

device2: connect hotspot, request web server, response -1, body empty.

I test device 1 webserver use browser from PC, success.

Test device 2, connect same route wifi, request my PC server, success.

I don't know why only (device2 request device1) or (device1 request device2) failed.

device1:

  ESP8266WebServer server(80);
  server.on("/config", []() {
    server.send(200, "text/plain", "config");
  });
  server.begin();

device2:

  HTTPClient http;
  http.begin("http://192.168.4.1/config");
  int httpCode = http.GET();
  String payload = http.getString();
  http.end();
  Serial.printf("httpCode: %d, %s \n", httpCode, payload.c_str());

are you sure that device2 successful connected to SoftAP of device1? — Juraj, Sep 29 '20 at 09:19
Yes, device2 get the ip from hosport, and device1 print connected device present device1. — yucui xiao, Sep 30 '20 at 03:19

yucui xiao · Answer 1 · 2020-09-30T06:43:15.730

0

device2 must set

WiFi.mode(WIFI_STA);

I lost this. If you connect route, no WiFi.mode(WIFI_STA) can work.

edited Sep 30 '20 at 06:43

answered Sep 30 '20 at 06:37

yucui xiao

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esp8266 request esp8266 http server code -1 (Arduino IDE)

1 Answers1