[請益] NodeMCU ESP8266與EMQX Docker連線

看板Programming作者 (lavender)時間4月前 (2024/03/10 14:38), 編輯推噓1(104)
留言5則, 2人參與, 3月前最新討論串1/1
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

03/12 08:56, 4月前 , 1F
你手機連同一個wifi 連的到?如果不行,
03/12 08:56, 1F

03/12 08:56, 4月前 , 2F
檢查一下防火牆,跟 port forwarding 設
03/12 08:56, 2F

03/12 08:56, 4月前 , 3F
03/12 08:56, 3F

04/07 23:57, 3月前 , 4F
if (!wifiClient.connected()) 這行怪
04/07 23:57, 4F

04/07 23:57, 3月前 , 5F
為什麼wifi連線失敗才要連http ?
04/07 23:57, 5F
文章代碼(AID): #1bxLLkrV (Programming)
文章代碼(AID): #1bxLLkrV (Programming)