fixes #595 mutex leak and other minor errors in TCP

fixes #596 POSIX IPC should move away from pipedesc/epdesc
fixes #598 TLS and TCP listeners could support NNG_OPT_LOCADDR
fixes #594 Windows IPC should use "new style" win_io code.
fixes #597 macOS could support PEER PID

This large change set cleans up the IPC support on Windows and
POSIX.  This has the beneficial impact of significantly reducing
the complexity of the code, reducing locking, increasing
concurrency (multiple dial and accepts can be outstanding now),
reducing context switches (we complete thins synchronously now).

While here we have added some missing option support, and fixed a
few more bugs that we found in the TCP code changes from last week.

1 files changed, 62 insertions, 0 deletions

diff --git a/src/platform/windows/win_ipc.h b/src/platform/windows/win_ipc.h
new file mode 100644
index 00000000..51ce5548
--- /dev/null
+++ b/src/platform/windows/win_ipc.h
@@ -0,0 +1,62 @@
+//
+// Copyright 2018 Staysail Systems, Inc. <info@staysail.tech>
+// Copyright 2018 Capitar IT Group BV <info@capitar.com>
+//
+// This software is supplied under the terms of the MIT License, a
+// copy of which should be located in the distribution where this
+// file was obtained (LICENSE.txt).  A copy of the license may also be
+// found online at https://opensource.org/licenses/MIT.
+//
+
+#ifndef PLATFORM_WIN_WINIPC_H
+#define PLATFORM_WIN_WINIPC_H
+
+// This header file is private to the IPC (named pipes) support for Windows.
+
+#include "core/nng_impl.h"
+
+#ifdef NNG_PLATFORM_WINDOWS
+
+struct nni_ipc_conn {
+	HANDLE            f;
+	nni_win_io        recv_io;
+	nni_win_io        send_io;
+	nni_win_io        conn_io;
+	nni_list          recv_aios;
+	nni_list          send_aios;
+	nni_aio *         conn_aio;
+	nni_ipc_dialer *  dialer;
+	nni_ipc_listener *listener;
+	int               recv_rv;
+	int               send_rv;
+	int               conn_rv;
+	bool              closed;
+	nni_mtx           mtx;
+	nni_cv            cv;
+	nni_reap_item     reap;
+};
+
+struct nni_ipc_dialer {
+	bool          closed; // dialers are locked by the worker lock
+	nni_list      aios;
+	nni_list_node node; // node on worker list
+};
+
+struct nni_ipc_listener {
+	char *              path;
+	bool                started;
+	bool                closed;
+	HANDLE              f;
+	SECURITY_ATTRIBUTES sec_attr;
+	nni_list            aios;
+	nni_mtx             mtx;
+	nni_cv              cv;
+	nni_win_io          io;
+	int                 rv;
+};
+
+extern int nni_win_ipc_conn_init(nni_ipc_conn **, HANDLE);
+
+#endif // NNG_PLATFORM_WINDOWS
+
+#endif // NNG_PLATFORM_WIN_WINIPC_H