patch 9.0.1165: tests using IPv6 sometimes fail

Problem:    Tests using IPv6 sometimes fail.
Solution:   Use getaddrinfo() and use try/catch. (James McCoy,
            closes #11783)

src/testdir/test_channel.py

@@ -259,7 +259,12 @@ def main(host, port, server_class=ThreadedTCPServer):
         print("Wait for it...")
         time.sleep(0.5)
 
-    server = server_class((host, port), ThreadedTCPRequestHandler)
+    addrs = socket.getaddrinfo(host, port, 0, 0, socket.IPPROTO_TCP)
+    # Each addr is a (family, type, proto, canonname, sockaddr) tuple
+    sockaddr = addrs[0][4]
+    server_class.address_family = addrs[0][0]
+
+    server = server_class(sockaddr[0:2], ThreadedTCPRequestHandler)
     ip, port = server.server_address[0:2]
 
     # Start a thread with the server.  That thread will then start a new thread

src/testdir/test_channel_lsp.py

@@ -306,7 +306,12 @@ def main(host, port, server_class=ThreadedTCPServer):
         writePortInFile(port)
         time.sleep(0.5)
 
-    server = server_class((host, port), ThreadedTCPRequestHandler)
+    addrs = socket.getaddrinfo(host, port, 0, 0, socket.IPPROTO_TCP)
+    # Each addr is a (family, type, proto, canonname, sockaddr) tuple
+    sockaddr = addrs[0][4]
+    server_class.address_family = addrs[0][0]
+
+    server = server_class(sockaddr[0:2], ThreadedTCPRequestHandler)
     ip, port = server.server_address[0:2]
 
     # Start a thread with the server.  That thread will then start a new thread

src/testdir/test_netbeans.py

@@ -184,8 +184,13 @@ def writePortInFile(port):
 if __name__ == "__main__":
     HOST, PORT = "localhost", 0
 
-    server = ThreadedTCPServer((HOST, PORT), ThreadedTCPRequestHandler)
+    addrs = socket.getaddrinfo(HOST, PORT, 0, 0, socket.IPPROTO_TCP)
-    ip, port = server.server_address
+    # Each addr is a (family, type, proto, canonname, sockaddr) tuple
+    sockaddr = addrs[0][4]
+    ThreadedTCPServer.address_family = addrs[0][0]
+
+    server = ThreadedTCPServer(sockaddr[0:2], ThreadedTCPRequestHandler)
+    ip, port = server.server_address[0:2]
 
     # Start a thread with the server.  That thread will then start a new thread
     # for each connection.
@@ -199,7 +204,7 @@ if __name__ == "__main__":
     # Main thread terminates, but the server continues running
     # until server.shutdown() is called.
     try:
-        while server_thread.isAlive(): 
+        while server_thread.is_alive():
             server_thread.join(1)
     except (KeyboardInterrupt, SystemExit):
         server.shutdown()

src/testdir/test_netbeans.vim

@@ -887,6 +887,7 @@ func Nb_quit_with_conn(port)
       return filter(l, 'v:val !~ "^0:geometry="')
     endfunc
 
+    try
       " Establish the connection with the netbeans server
       exe 'nbstart :localhost:' .. g:port .. ':star'
       call assert_true(has("netbeans_enabled"))
@@ -909,6 +910,9 @@ func Nb_quit_with_conn(port)
 
       quit!
       quit!
+    finally
+      qall!
+    endtry
   END
   if RunVim(['let g:port = ' .. a:port], after, '')
     call WaitFor('len(ReadXnetbeans()) >= 9')

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1165,
 /**/
     1164,
 /**/