fix empty thread title due premature HTTP connection closing

isso/__init__.py

@@ -58,7 +58,7 @@ from jinja2 import Environment, FileSystemLoader
 
 from isso import db, migrate, views, wsgi
 from isso.core import ThreadedMixin, uWSGIMixin, Config
-from isso.utils import parse
+from isso.utils import parse, http
 from isso.views import comment, admin
 
 logging.getLogger('werkzeug').setLevel(logging.ERROR)
@@ -164,14 +164,9 @@ def make_app(conf=None):
 
     isso = App(conf)
 
-    for line in conf.getiter("general", "host"):
-        try:
-            host, port, ssl = parse.host(line)
-            con = httplib.HTTPSConnection if ssl else httplib.HTTPConnection
-            con(host, port, timeout=5).request('GET', '/')
-        except (httplib.HTTPException, socket.error):
-            continue
-        else:
+    for host in conf.getiter("general", "host"):
+        with http.curl('HEAD', host, '/', 5) as resp:
+            if resp is not None:
                 logger.info("connected to HTTP server")
                 break
     else:

isso/utils/http.py

@@ -12,14 +12,27 @@ except ImportError:
 from isso.utils import parse
 
 
-def curl(method, host, path, timeout=3):
+class curl(object):
 
-    host, port, ssl = parse.host(host)
+    def __init__(self, method, host, path, timeout=3):
+        self.method = method
+        self.host = host
+        self.path = path
+        self.timeout = timeout
+
+    def __enter__(self):
+
+        host, port, ssl = parse.host(self.host)
         http = httplib.HTTPSConnection if ssl else httplib.HTTPConnection
 
-    with closing(http(host, port, timeout=timeout)) as con:
+        self.con = http(host, port, timeout=self.timeout)
+
         try:
-            con.request(method, path)
+            self.con.request(self.method, self.path)
         except (httplib.HTTPException, socket.error):
             return None
-        return con.getresponse()
+
+        return self.con.getresponse()
+
+    def __exit__(self, exc_type, exc_value, traceback):
+        self.con.close()

isso/views/comment.py

@@ -73,7 +73,7 @@ def new(app, environ, request, uri):
     with app.lock:
         if uri not in app.db.threads:
             for host in app.conf.getiter('general', 'host'):
-                resp = http.curl('HEAD', host, uri)
+                with http.curl('GET', host, uri) as resp:
                     if resp and resp.status == 200:
                         title = parse.title(resp.read())
                         break