server: add first (work with sockets) level of abstraction

1 files changed, 37 insertions, 0 deletions

diff --git a/src/server/sockets.hpp b/src/server/sockets.hpp
new file mode 100644
index 0000000..2f47e3b
--- /dev/null
+++ b/src/server/sockets.hpp
@@ -0,0 +1,37 @@
+#ifndef SOCKETS_H
+#define SOCKETS_H
+
+#include <unistd.h>
+#include <sys/poll.h>
+
+class FdHandler { // abstract class
+    int fd;
+public:
+    FdHandler(int i_fd) : fd(i_fd) {} 
+    virtual ~FdHandler() { close(fd); }
+
+    int GetFd() const { return fd; }
+
+    virtual bool WantRead() const { return true; }
+    virtual bool WantWrite() const { return false; }
+    virtual void Handle(bool r, bool w) = 0;
+};
+
+class EventSelector {
+    FdHandler **fd_array;
+    struct pollfd *fds;
+    int fd_array_len;
+    int max_fd;
+
+    bool exit_flag;
+public:
+    EventSelector() : fd_array(0), fds(0), max_fd(-1), exit_flag(false) {}
+    ~EventSelector();
+
+    void Add(FdHandler *h);
+    bool Remove(FdHandler *h);
+
+    void Run();
+    void BreakLoop() { exit_flag = true; }
+};
+#endif
\ No newline at end of file