message: Restore old read_block_size
diff: @@ -77,7 +77,7 @@ namespace http
  }
  else
  {
  - constexpr auto read_block_size = 16384;
  + constexpr auto read_block_size = 4096;
  auto buf = read(read_block_size, false);
  auto data = buf.data();
  auto size = buf.size();
  