improved error handling

4 files changed, 7 insertions, 14 deletions

diff --git a/src/ip.cpp b/src/ip.cpp
index 05a267e..0d14fcf 100644
--- a/src/ip.cpp
+++ b/src/ip.cpp
@@ -285,7 +285,8 @@ int zmq::resolve_ip_hostname (sockaddr_in *addr_, const char *hostname_)
     //  Separate the hostname.
     std::string hostname (hostname_, delimiter - hostname_);
 
-    //  Resolve host name.
+    //  Resolve host name. Some of the error info is lost in case of error,
+    //  however, there's no way to report EAI errors via errno.
     addrinfo req;
     memset (&req, 0, sizeof (req));
     req.ai_family = AF_INET;
diff --git a/src/tcp_listener.cpp b/src/tcp_listener.cpp
index 937618d..de62879 100644
--- a/src/tcp_listener.cpp
+++ b/src/tcp_listener.cpp
@@ -55,11 +55,10 @@ zmq::tcp_listener_t::~tcp_listener_t ()
 int zmq::tcp_listener_t::set_address (const char *addr_)
 {
     //  Convert the interface into sockaddr_in structure.
-    return resolve_ip_interface (&addr, addr_);
-}
+    int rc = resolve_ip_interface (&addr, addr_);
+    if (rc != 0)
+        return rc;
 
-int zmq::tcp_listener_t::open ()
-{
     //  Create a listening socket.
     s = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
     if (s == -1)
@@ -67,7 +66,7 @@ int zmq::tcp_listener_t::open ()
 
     //  Allow reusing of the address.
     int flag = 1;
-    int rc = setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &flag, sizeof (int));
+    rc = setsockopt (s, SOL_SOCKET, SO_REUSEADDR, &flag, sizeof (int));
     errno_assert (rc == 0);
 
     //  Set the non-blocking flag.
diff --git a/src/tcp_listener.hpp b/src/tcp_listener.hpp
index 2a8bc23..62498dc 100644
--- a/src/tcp_listener.hpp
+++ b/src/tcp_listener.hpp
@@ -35,14 +35,11 @@ namespace zmq
         tcp_listener_t ();
         ~tcp_listener_t ();
 
-        //  Set up the address to listen on. Address is in
+        //  Start listening on the interface. Address is in
         //  <interface-name>:<port-number> format. Interface name may be '*'
         //  to bind to all the interfaces.
         int set_address (const char *addr_);
 
-        //  Open TCP listining socket. 
-        int open ();
-
         //  Close the listening socket.
         int close ();
 
diff --git a/src/zmq_listener.cpp b/src/zmq_listener.cpp
index 97164c1..35e4428 100644
--- a/src/zmq_listener.cpp
+++ b/src/zmq_listener.cpp
@@ -41,10 +41,6 @@ int zmq::zmq_listener_t::set_address (const char *addr_)
 
 void zmq::zmq_listener_t::process_plug ()
 {
-    //  Open the listening socket.
-    int rc = tcp_listener.open ();
-    zmq_assert (rc == 0);
-
     //  Start polling for incoming connections.
     handle = add_fd (tcp_listener.get_fd ());
     set_pollin (handle);