From 3caa637e1b43f0665ae77fd25c5a66c08638f201 Mon Sep 17 00:00:00 2001
From: Ilya Kulakov <kulakov.ilya@gmail.com>
Date: Mon, 14 Dec 2015 19:18:43 +0600
Subject: [PATCH] Add special interface to represent local VMCI context.

---
 doc/zmq_vmci.txt     | 2 +-
 src/vmci_address.cpp | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/doc/zmq_vmci.txt b/doc/zmq_vmci.txt
index 1bf2dce3..1a25a007 100644
--- a/doc/zmq_vmci.txt
+++ b/doc/zmq_vmci.txt
@@ -34,7 +34,7 @@ colon and the TCP port number to use.
 An 'interface' may be specified by either of the following:
 
 * The wild-card `*`, meaning all available interfaces.
-* An integer returned by `VMCISock_GetLocalCID`
+* An integer returned by `VMCISock_GetLocalCID` or `@` (ZeroMQ will call VMCISock_GetLocalCID internally).
 
 The port may be specified by:
 
diff --git a/src/vmci_address.cpp b/src/vmci_address.cpp
index f3e17846..ad5b0740 100644
--- a/src/vmci_address.cpp
+++ b/src/vmci_address.cpp
@@ -77,6 +77,14 @@ int zmq::vmci_address_t::resolve(const char *path_)
         errno = EINVAL;
         return -1;
     }
+    else if (addr_str == "@") {
+        cid = VMCISock_GetLocalCID();
+
+        if (cid == VMADDR_CID_ANY) {
+            errno = ENODEV;
+            return -1;
+        }
+    }
     else if (addr_str != "*" && addr_str != "-1") {
         const char *begin = addr_str.c_str();
         char *end = NULL;