106 lines
3.7 KiB
C++
106 lines
3.7 KiB
C++
/**The MIT License (MIT)
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Copyright (c) 2015 by Daniel Eichhorn
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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See more at http://blog.squix.ch
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*/
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#include "WebResource.h"
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WebResource::WebResource(){
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}
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void WebResource::downloadFile(String url, String filename) {
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downloadFile(url, filename, nullptr);
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}
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void WebResource::downloadFile(String url, String filename, ProgressCallback progressCallback) {
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if (SPIFFS.exists(filename) == true) {
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Serial.println("Found " + filename);
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return;
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}
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else Serial.println("Downloading " + filename + " from " + url);
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// wait for WiFi connection
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if((_wifiMulti.run() == WL_CONNECTED)) {
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HTTPClient http;
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Serial.print("[HTTP] begin...\n");
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// configure server and url
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http.begin(url);
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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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//SPIFFS.remove(filename);
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fs::File f = SPIFFS.open(filename, "w+");
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if (!f) {
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Serial.println("file open failed");
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return;
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}
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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 total = http.getSize();
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int len = total;
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progressCallback(filename, 0,total);
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// create buffer for read
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uint8_t buff[128] = { 0 };
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// get tcp stream
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WiFiClient * stream = http.getStreamPtr();
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// read all data from server
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while(http.connected() && (len > 0 || len == -1)) {
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// get available data size
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size_t size = stream->available();
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if(size) {
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// read up to 128 byte
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int c = stream->readBytes(buff, ((size > sizeof(buff)) ? sizeof(buff) : size));
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// write it to Serial
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f.write(buff, c);
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if(len > 0) {
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len -= c;
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}
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progressCallback(filename, total - len,total);
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}
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delay(1);
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}
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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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f.close();
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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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}
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