[請益] NodeMCU ESP8266與EMQX Docker連線

[lavender19 (lavender)]

各位先進們大家好～

NodeMCU ESP8266 透過Http協定，連線到本機Docker 上面的EMQX，確認Http溝通是否正
常，目前wifi可以正常連線，但HTPP連線失敗？

皆在本機執行，請問那種情況下可能會造成這些錯誤？

https://imgur.com/a/MoFdCC6

以下為程式碼
======================================
#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>

const char* ssid = "xxx";
const char* password = "xxx";
WiFiClient wifiClient; // Create a WiFiClient object
HTTPClient http; // Declare the HTTPClient object here

// Replace with your EMQX server URL (without the trailing slash)
//const char* emqx_server = "http://xxx.xxx.xxx.xxx"; //priviate ip
const char* emqx_server = "http://xxx.xxx.xxx.xxx"; //public ip?

void setup() {
    Serial.begin(115200);
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(1000);
        Serial.println("Connecting to WiFi...");
    }
    Serial.println("Connected to WiFi");

    // Your other setup code here...
}

void loop() {
    // Check if WiFi is still connected
    if (WiFi.status() != WL_CONNECTED) {
        Serial.println("WiFi connection lost. Reconnecting...");
        WiFi.reconnect();
    }

    // Check if HTTP connection is still active
    if (!wifiClient.connected()) {
        Serial.println("HTTP connection lost. Reconnecting...");
        http.begin(wifiClient, "http://172.17.0.2:18083"); // Use any valid UR
L for testing
        int httpCode = http.GET();
        if (httpCode == 200) {
            Serial.println("HTTP connection re-established.");
        } else {
            Serial.println("Error reconnecting to HTTP server.");
        }
        http.end(); // Close the connection
    }

    // Your other loop code here...

    delay(1000); // Adjust the delay as needed
}

因上述問題已苦惱多天
在此請教各位前輩～

非常感謝！！

--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 111.250.15.80 (臺灣)
※ 文章網址: https://www.ptt.cc/bbs/Programming/M.1710052718.A.D5F.html
推 ssdoz2sk: 你手機連同一個wifi 連的到？如果不行，
→ ssdoz2sk: 檢查一下防火牆，跟 port forwarding 設
→ ssdoz2sk: 定
→ shadowjohn: if (!wifiClient.connected()) 這行怪
→ shadowjohn: 為什麼wifi連線失敗才要連http ?