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105 lines
2.4 KiB
C++
105 lines
2.4 KiB
C++
/**
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StreamHTTPClient.ino
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Created on: 24.05.2015
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*/
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#include <Arduino.h>
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#include <ESP8266WiFi.h>
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#include <ESP8266WiFiMulti.h>
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#include <ESP8266HTTPClient.h>
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ESP8266WiFiMulti WiFiMulti;
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void setup() {
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Serial.begin(115200);
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// Serial.setDebugOutput(true);
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Serial.println();
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Serial.println();
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Serial.println();
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for (uint8_t t = 4; t > 0; t--) {
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Serial.printf("[SETUP] WAIT %d...\n", t);
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Serial.flush();
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delay(1000);
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}
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WiFi.mode(WIFI_STA);
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WiFiMulti.addAP("SSID", "PASSWORD");
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}
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void loop() {
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// wait for WiFi connection
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if ((WiFiMulti.run() == WL_CONNECTED)) {
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WiFiClient client;
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HTTPClient http; //must be declared after WiFiClient for correct destruction order, because used by http.begin(client,...)
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Serial.print("[HTTP] begin...\n");
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// configure server and url
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http.begin(client, "http://jigsaw.w3.org/HTTP/connection.html");
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//http.begin(client, "jigsaw.w3.org", 80, "/HTTP/connection.html");
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Serial.print("[HTTP] GET...\n");
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// start connection and send HTTP header
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int httpCode = http.GET();
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if (httpCode > 0) {
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// HTTP header has been send and Server response header has been handled
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Serial.printf("[HTTP] GET... code: %d\n", httpCode);
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// file found at server
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if (httpCode == HTTP_CODE_OK) {
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// get length of document (is -1 when Server sends no Content-Length header)
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int len = http.getSize();
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// create buffer for read
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uint8_t buff[128] = { 0 };
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#if 0
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// with API
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Serial.println(http.getString());
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#else
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// or "by hand"
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// get tcp stream
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WiFiClient * stream = &client;
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// read all data from server
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while (http.connected() && (len > 0 || len == -1)) {
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// read up to 128 byte
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int c = stream->readBytes(buff, std::min((size_t)len, sizeof(buff)));
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Serial.printf("readBytes: %d\n", c);
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if (!c) {
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Serial.println("read timeout");
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}
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// write it to Serial
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Serial.write(buff, c);
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if (len > 0) {
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len -= c;
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}
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}
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#endif
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Serial.println();
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Serial.print("[HTTP] connection closed or file end.\n");
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}
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} else {
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Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
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}
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http.end();
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}
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delay(60000);
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}
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