69 lines
1.3 KiB
C++
69 lines
1.3 KiB
C++
/*
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* This sketch sends a message to a TCP server
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*
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*/
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#include <ESP8266WiFi.h>
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#include <ESP8266WiFiMulti.h>
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ESP8266WiFiMulti WiFiMulti;
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void setup() {
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Serial.begin(115200);
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delay(10);
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// We start by connecting to a WiFi network
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WiFiMulti.addAP("SSID", "passpasspass");
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Serial.println();
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Serial.println();
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Serial.print("Wait for WiFi... ");
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while(WiFiMulti.run() != WL_CONNECTED) {
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Serial.print(".");
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delay(500);
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}
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Serial.println("");
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Serial.println("WiFi connected");
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Serial.println("IP address: ");
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Serial.println(WiFi.localIP());
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delay(500);
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}
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void loop() {
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const uint16_t port = 80;
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const char * host = "192.168.1.1"; // ip or dns
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Serial.print("connecting to ");
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Serial.println(host);
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// Use WiFiClient class to create TCP connections
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WiFiClient client;
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if (!client.connect(host, port)) {
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Serial.println("connection failed");
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Serial.println("wait 5 sec...");
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delay(5000);
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return;
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}
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// This will send the request to the server
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client.print("Send this data to server");
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//read back one line from server
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String line = client.readStringUntil('\r');
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client.println(line);
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Serial.println("closing connection");
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client.stop();
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Serial.println("wait 5 sec...");
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delay(5000);
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}
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