Espressif ESP8266 User Manual

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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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const int httpPort = 80;
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if (!client.connect(host, httpPort)) {
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Serial.println("connection failed");
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return;
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}
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// We now create a URI for the request
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String url = "/guide/";
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Serial.print("Requesting URL: ");
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Serial.println(url);
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// This will send the request to the server
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client.print(String("GET ") + url + " HTTP/1.1\r\n" +
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"Host: " + host + "\r\n" +
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"Connection: close\r\n\r\n");
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unsigned long timeout = millis();
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while (client.available() == 0) {
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if (millis() - timeout > 5000) {
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Serial.println(">>> Client Timeout !");
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client.stop();
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return;
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}
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}
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// Read all the lines of the reply from server and print them to Serial
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while(client.available()){

Espressif ESP8266 Specifications

General

Digital I/O Pins	17
Analog Input Pins	1
Wi-Fi	802.11 b/g/n
Operating Voltage	3.0V - 3.6V
Clock Speed	80 MHz / 160 MHz
Operating Temperature	-40°C to 125°C
Dimensions	24mm x 14mm
Processor	Tensilica L106 32-bit micro controller