Client can not handle hostnames with 63 bytes when a port is given in…

… the url aio-libs#1044

I handled by reconstructing url string.
And I used function make_netlog in client_reqrep.py

aiohttp/client_reqrep.py

@@ -123,8 +123,13 @@ def update_host(self, url):
 
         # check domain idna encoding
         try:
-            netloc = netloc.encode('idna').decode('utf-8')
             host = host.encode('idna').decode('utf-8')
+            #To show more compact to implement codes, I used 'make_netloc' function.
+            #I think it would be nicer... than implement all contents.
+            netloc = self.make_netloc(url_parsed.username,
+                                      url_parsed.password,
+                                      host,
+                                      url_parsed.port)
         except UnicodeError:
             raise ValueError('URL has an invalid label.')
 
@@ -149,6 +154,19 @@ def update_host(self, url):
 
         self.host, self.port, self.scheme = host, port, scheme
 
+    #Already Coded from yarl project.. I just copied it!
+    def make_netloc(self, user, password, host, port):
+        ret = host
+        if port:
+            ret = ret + ':' + str(port)
+        if password:
+            if not user:
+                raise ValueError("Non-empty password requires non-empty user")
+            user = user + ':' + password
+        if user:
+            ret = user + '@' + ret
+        return ret
+
     def update_version(self, version):
         """Convert request version to two elements tuple.