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-// ArduinoJson - https://arduinojson.org
-// Copyright © 2014-2026, Benoit BLANCHON
-// MIT License
-//
-// This example shows how to parse a JSON document in an HTTP response.
-// It uses the Ethernet library, but can be easily adapted for Wifi.
-//
-// It performs a GET resquest on https://arduinojson.org/example.json
-// Here is the expected response:
-// {
-// "sensor": "gps",
-// "time": 1351824120,
-// "data": [
-// 48.756080,
-// 2.302038
-// ]
-// }
-//
-// https://arduinojson.org/v7/example/http-client/
-
-#include <ArduinoJson.h>
-#include <Ethernet.h>
-#include <SPI.h>
-
-void setup() {
- // Initialize Serial port
- Serial.begin(9600);
- while (!Serial)
- continue;
-
- // Initialize Ethernet library
- byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
- if (!Ethernet.begin(mac)) {
- Serial.println(F("Failed to configure Ethernet"));
- return;
- }
- delay(1000);
-
- Serial.println(F("Connecting..."));
-
- // Connect to HTTP server
- EthernetClient client;
- client.setTimeout(10000);
- if (!client.connect("arduinojson.org", 80)) {
- Serial.println(F("Connection failed"));
- return;
- }
-
- Serial.println(F("Connected!"));
-
- // Send HTTP request
- client.println(F("GET /example.json HTTP/1.0"));
- client.println(F("Host: arduinojson.org"));
- client.println(F("Connection: close"));
- if (client.println() == 0) {
- Serial.println(F("Failed to send request"));
- client.stop();
- return;
- }
-
- // Check HTTP status
- char status[32] = {0};
- client.readBytesUntil('\r', status, sizeof(status));
- // It should be "HTTP/1.0 200 OK" or "HTTP/1.1 200 OK"
- if (strcmp(status + 9, "200 OK") != 0) {
- Serial.print(F("Unexpected response: "));
- Serial.println(status);
- client.stop();
- return;
- }
-
- // Skip HTTP headers
- char endOfHeaders[] = "\r\n\r\n";
- if (!client.find(endOfHeaders)) {
- Serial.println(F("Invalid response"));
- client.stop();
- return;
- }
-
- // Allocate the JSON document
- JsonDocument doc;
-
- // Parse JSON object
- DeserializationError error = deserializeJson(doc, client);
- if (error) {
- Serial.print(F("deserializeJson() failed: "));
- Serial.println(error.f_str());
- client.stop();
- return;
- }
-
- // Extract values
- Serial.println(F("Response:"));
- Serial.println(doc["sensor"].as<const char*>());
- Serial.println(doc["time"].as<long>());
- Serial.println(doc["data"][0].as<float>(), 6);
- Serial.println(doc["data"][1].as<float>(), 6);
-
- // Disconnect
- client.stop();
-}
-
-void loop() {
- // not used in this example
-}
-
-// Performance issue?
-// ------------------
-//
-// EthernetClient is an unbuffered stream, which is not optimal for ArduinoJson.
-// See: https://arduinojson.org/v7/how-to/improve-speed/
-
-// See also
-// --------
-//
-// https://arduinojson.org/ contains the documentation for all the functions
-// used above. It also includes an FAQ that will help you solve any
-// serialization problem.
-//
-// The book "Mastering ArduinoJson" contains a tutorial on deserialization
-// showing how to parse the response from GitHub's API. In the last chapter,
-// it shows how to parse the huge documents from OpenWeatherMap
-// and Reddit.
-// Learn more at https://arduinojson.org/book/
-// Use the coupon code TWENTY for a 20% discount ❤❤❤❤❤