Improves WiFiMulti #9139
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| /* | ||
| * This sketch tries to connect to the best AP available | ||
| * and tests for captive portals on open networks | ||
| * | ||
| */ | ||
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| #include <WiFi.h> | ||
| #include <WiFiMulti.h> | ||
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| WiFiMulti wifiMulti; | ||
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| // This is used to test the Internet connection of connected the AP | ||
| // Use a non-302 status code to ensure we bypass captive portals. Can be any text in the webpage. | ||
| String _testResp = "301 Moved"; // usually http:// is moves to https:// by a 301 code | ||
| // You can also set this to a simple test page on your own server to ensure you can reach it, | ||
| // like "http://www.mysite.com/test.html" | ||
| String _testURL = "http://www.espressif.com"; // Must include "http://" if testing a HTTP host | ||
| const int _testPort = 80; // HTTP port | ||
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| bool testConnection(){ | ||
| //parse url | ||
| int8_t split = _testURL.indexOf('/',7); | ||
| String host = _testURL.substring(7, split); | ||
| String url = (split < 0) ? "/":_testURL.substring(split,_testURL.length()); | ||
| log_i("Testing Connection to %s. Test Respponse is \"%s\"",_testURL.c_str(), _testResp.c_str()); | ||
| // Use WiFiClient class to create TCP connections | ||
| WiFiClient client; | ||
| if (!client.connect(host.c_str(), _testPort)) { | ||
| log_e("Connection failed"); | ||
| return false; | ||
| } else { | ||
| log_i("Connected to test host"); | ||
| } | ||
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| // This will send the request to the server | ||
| client.print(String("GET ") + url + " HTTP/1.1\r\n" + | ||
| "Host: " + host + "\r\n" + | ||
| "Connection: close\r\n\r\n"); | ||
| unsigned long timeout = millis(); | ||
| while (client.available() == 0) { | ||
| if (millis() - timeout > 5000) { | ||
| log_e(">>>Client timeout!"); | ||
| client.stop(); | ||
| return false; | ||
| } | ||
| } | ||
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| bool bSuccess = false; | ||
| timeout = millis(); | ||
| while(client.available()) { | ||
| if (millis() - timeout < 5000) { | ||
| String line = client.readStringUntil('\r'); | ||
| Serial.println("=============HTTP RESPONSE============="); | ||
| Serial.print(line); | ||
| Serial.println("\n======================================="); | ||
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| bSuccess = client.find(_testResp.c_str()); | ||
| if (bSuccess){ | ||
| log_i("Success. Found test response"); | ||
| } else { | ||
| log_e("Failed. Can't find test response"); | ||
| } | ||
| return bSuccess; | ||
| } else { | ||
| log_e("Test Response checking has timed out!"); | ||
| break; | ||
| } | ||
| } | ||
| return false; // timeout | ||
| } | ||
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| void setup() | ||
| { | ||
| Serial.begin(115200); | ||
| delay(10); | ||
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| wifiMulti.addAP("ssid_from_AP_1", "your_password_for_AP_1"); | ||
| wifiMulti.addAP("ssid_from_AP_2", "your_password_for_AP_2"); | ||
| wifiMulti.addAP("ssid_from_AP_3", "your_password_for_AP_3"); | ||
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| // These options can help when you need ANY kind of wifi connection to get a config file, report errors, etc. | ||
| wifiMulti.setStrictMode(false); // Default is true. Library will disconnect and forget currently connected AP if it's not in the AP list. | ||
| wifiMulti.setAllowOpenAP(true); // Default is false. True adds open APs to the AP list. | ||
| wifiMulti.setConnectionTestCallbackFunc(testConnection); // Attempts to connect to a remote webserver in case of captive portals. | ||
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| Serial.println("Connecting Wifi..."); | ||
| if(wifiMulti.run() == WL_CONNECTED) { | ||
| Serial.println(""); | ||
| Serial.println("WiFi connected"); | ||
| Serial.println("IP address: "); | ||
| Serial.println(WiFi.localIP()); | ||
| } | ||
| } | ||
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| void loop() | ||
| { | ||
| static bool isConnected = false; | ||
| uint8_t WiFiStatus = wifiMulti.run(); | ||
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| if (WiFiStatus == WL_CONNECTED) { | ||
| if (!isConnected) { | ||
| Serial.println(""); | ||
| Serial.println("WiFi connected"); | ||
| Serial.println("IP address: "); | ||
| Serial.println(WiFi.localIP()); | ||
| } | ||
| isConnected = true; | ||
| } else { | ||
| Serial.println("WiFi not connected!"); | ||
| isConnected = false; | ||
| delay(5000); | ||
| } | ||
| } | ||
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