fix(client): Implement readBytes in NetworkClient for faster downloads

Co-authored-by: me-no-dev <[email protected]>

Author: Jason2866

Diff for: libraries/Network/src/NetworkClient.cpp

@@ -477,6 +477,14 @@ int NetworkClient::read(uint8_t *buf, size_t size) {
   return res;
 }
 
+size_t NetworkClient::readBytes(char *buffer, size_t length) {
+  int r = read((uint8_t*)buffer, length);
+  if (r < 0) {
+    return 0;
+  }
+  return (size_t)r;
+}
+
 int NetworkClient::peek() {
   int res = -1;
   if (fd() >= 0 && _rxBuffer) {

Diff for: libraries/Network/src/NetworkClient.h

@@ -59,6 +59,10 @@ class NetworkClient : public ESPLwIPClient {
   int available();
   int read();
   int read(uint8_t *buf, size_t size);
+  size_t readBytes(char *buffer, size_t length);
+  size_t readBytes(uint8_t *buffer, size_t length) {
+    return readBytes((char *)buffer, length);
+  }
   int peek();
   void flush();
   void stop();