Allow to set file chunk size to the server.

webcc/body.h

@@ -131,7 +131,7 @@ private:
 // the memory.
 class FileBody : public Body {
 public:
-  explicit FileBody(const Path& path, std::size_t chunk_size = 1024);
+  FileBody(const Path& path, std::size_t chunk_size);
 
   std::size_t GetSize() const override {
     return size_;

webcc/gzip.cc

@@ -80,7 +80,7 @@ bool Decompress(const std::string& input, std::string* output) {
   stream.zalloc = Z_NULL;
   stream.zfree = Z_NULL;
 
-  // About the windowBits paramter:
+  // About the windowBits parameter:
   //   (https://stackoverflow.com/a/1838702)
   //   (http://www.zlib.net/manual.html)
   // windowBits can also be greater than 15 for optional gzip decoding. Add 32

webcc/server.cc

@@ -21,7 +21,7 @@ using tcp = boost::asio::ip::tcp;
 namespace webcc {
 
 Server::Server(std::uint16_t port, const Path& doc_root)
-    : port_(port), doc_root_(doc_root), running_(false),
+    : port_(port), doc_root_(doc_root), file_chunk_size_(1024), running_(false),
       acceptor_(io_context_), signals_(io_context_) {
   AddSignals();
 }
@@ -352,7 +352,7 @@ bool Server::ServeStatic(ConnectionPtr connection) {
   Path p = doc_root_ / path;
 
   try {
-    auto body = std::make_shared<FileBody>(p);
+    auto body = std::make_shared<FileBody>(p, file_chunk_size_);
 
     auto response = std::make_shared<Response>(Status::kOK);
 

webcc/server.h

@@ -26,6 +26,10 @@ public:
   Server(const Server&) = delete;
   Server& operator=(const Server&) = delete;
 
+  void set_file_chunk_size(std::size_t file_chunk_size) {
+    file_chunk_size_ = file_chunk_size;
+  }
+
   // Route a URL to a view.
   // The URL should start with "/". E.g., "/instances".
   bool Route(const std::string& url, ViewPtr view,
@@ -109,6 +113,10 @@ private:
   // The directory with the static files to be served.
   Path doc_root_;
 
+  // The size of the chunk loaded into memory each time when serving a
+  // static file.
+  std::size_t file_chunk_size_;
+
   // Is the server running?
   bool running_;