Add exemple Upload Huge File

Author: nathannau

Diff for: libraries/WebServer/examples/UploadHugeFile/README.md

@@ -0,0 +1,13 @@
+# Upload Huge File To SD Over Http
+
+This project is an example of an HTTP server designed to facilitate the transfer of large files using the PUT method, in accordance with RFC specifications.
+
+### Example cURL Command
+
+```bash
+curl -X PUT -H "Content-Type: application/octet-stream" -T ./my-file.mp3 http://esp-ip/upload/my-file.mp3
+```
+
+## Resources
+
+- RFC HTTP/1.0 - Additional Request Methods - PUT : [Link](https://datatracker.ietf.org/doc/html/rfc1945#appendix-D.1.1)

Diff for: libraries/WebServer/examples/UploadHugeFile/UploadHugeFile.ino

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+#include <WiFi.h>
+#include <WiFiClient.h>
+#include <WebServer.h>
+#include <uri/UriRegex.h>
+#include <SD.h>
+
+const char* ssid = "**********";
+const char* password = "**********";
+
+WebServer server(80);
+
+File rawFile;
+void handleCreate() {
+  server.send(200, "text/plain", "");
+}
+void handleCreateProcess() {
+  String path = server.pathArg(0);
+  HTTPRaw& raw = server.raw();
+  if (raw.status == RAW_START) {
+    if (SD.exists((char *)path.c_str())) {
+      SD.remove((char *)path.c_str());
+    }
+    rawFile = SD.open(path.c_str(), FILE_WRITE);
+    Serial.print("Upload: START, filename: "); 
+    Serial.println(path);
+  } else if (raw.status == RAW_WRITE) {
+    if (rawFile) {
+      rawFile.write(raw.buf, raw.currentSize);
+    }
+    Serial.print("Upload: WRITE, Bytes: "); 
+    Serial.println(raw.currentSize);
+  } else if (raw.status == RAW_END) {
+    if (rawFile) {
+      rawFile.close();
+    }
+    Serial.print("Upload: END, Size: "); 
+    Serial.println(raw.totalSize);
+  }
+}
+
+void returnFail(String msg) {
+  server.send(500, "text/plain", msg + "\r\n");
+}
+
+void printDirectory() {
+  if (!server.hasArg("dir")) {
+    return returnFail("BAD ARGS");
+  }
+  String path = server.arg("dir");
+  if (path != "/" && !SD.exists((char *)path.c_str())) {
+    return returnFail("BAD PATH");
+  }
+  File dir = SD.open((char *)path.c_str());
+  path = String();
+  if (!dir.isDirectory()) {
+    dir.close();
+    return returnFail("NOT DIR");
+  }
+  dir.rewindDirectory();
+  server.setContentLength(CONTENT_LENGTH_UNKNOWN);
+  server.send(200, "text/json", "");
+  WiFiClient client = server.client();
+
+  server.sendContent("[");
+  for (int cnt = 0; true; ++cnt) {
+    File entry = dir.openNextFile();
+    if (!entry) {
+      break;
+    }
+
+    String output;
+    if (cnt > 0) {
+      output = ',';
+    }
+
+    output += "{\"type\":\"";
+    output += (entry.isDirectory()) ? "dir" : "file";
+    output += "\",\"name\":\"";
+    output += entry.path();
+    output += "\"";
+    output += "}";
+    server.sendContent(output);
+    entry.close();
+  }
+  server.sendContent("]");
+  dir.close();
+}
+
+void handleNotFound() {
+  String message = "File Not Found\n\n";
+  message += "URI: ";
+  message += server.uri();
+  message += "\nMethod: ";
+  message += (server.method() == HTTP_GET) ? "GET" : "POST";
+  message += "\nArguments: ";
+  message += server.args();
+  message += "\n";
+  for (uint8_t i = 0; i < server.args(); i++) {
+    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
+  }
+  server.send(404, "text/plain", message);
+}
+
+void setup(void) {
+  Serial.begin(115200);
+
+  while (!SD.begin()) delay(1);
+  Serial.println("SD Card initialized.");
+
+  WiFi.mode(WIFI_STA);
+  WiFi.begin(ssid, password);
+
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+  Serial.print("Connected to ");
+  Serial.println(ssid);
+  Serial.print("IP address: ");
+  Serial.println(WiFi.localIP());
+
+  server.on(UriRegex("/upload/(.*)"), HTTP_PUT, handleCreate, handleCreateProcess);
+  server.onNotFound(handleNotFound);
+  server.begin();
+  Serial.println("HTTP server started");
+
+}
+
+void loop(void) {
+  server.handleClient();
+  delay(2);//allow the cpu to switch to other tasks
+}