Initial checkin of lldb code from internal Apple repo.

llvm-svn: 105619
diff --git a/lldb/tools/debugserver/source/RNBSocket.h b/lldb/tools/debugserver/source/RNBSocket.h
new file mode 100644
index 0000000..de3db80
--- /dev/null
+++ b/lldb/tools/debugserver/source/RNBSocket.h
@@ -0,0 +1,65 @@
+//===-- RNBSocket.h ---------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  Created by Greg Clayton on 12/12/07.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __RNBSocket_h__
+#define __RNBSocket_h__
+
+#include "RNBDefs.h"
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <string>
+#include "DNBTimer.h"
+
+class RNBSocket
+{
+public:
+
+    RNBSocket () :
+        m_conn_port (-1),
+        m_conn_port_from_lockdown (false),
+        m_timer (true)      // Make a thread safe timer
+    {
+    }
+    ~RNBSocket (void)
+    {
+        Disconnect (false);
+    }
+
+    rnb_err_t Listen (in_port_t listen_port_num);
+#if defined (__arm__)
+    rnb_err_t ConnectToService();
+#endif
+    rnb_err_t OpenFile (const char *path);
+    rnb_err_t Disconnect (bool save_errno);
+    rnb_err_t Read (std::string &p);
+    rnb_err_t Write (const void *buffer, size_t length);
+
+    bool IsConnected () const { return m_conn_port != -1; }
+    void SaveErrno (int curr_errno);
+    DNBTimer& Timer() { return m_timer; }
+
+    static int SetSocketOption(int fd, int level, int option_name, int option_value);
+private:
+    // Outlaw some constructors
+    RNBSocket (const RNBSocket &);
+
+protected:
+    rnb_err_t ClosePort (int& fd, bool save_errno);
+
+    int m_conn_port;    // Socket we use to communicate once conn established
+    bool m_conn_port_from_lockdown;
+    DNBTimer m_timer;
+};
+
+
+#endif // #ifndef __RNBSocket_h__