Prepare 1.3.1 release

Fix #272

CHANGELOG

@@ -1,5 +1,40 @@
 # Change Log
 
+## 1.3.1 11/04/2015
+
+* Release
+
+## 1.3.1rc4 09/04/2015
+
+* Fix crash when save as can't create a directory
+* Allow less strict dependencies
+
+## 1.3.1rc3 07/04/2015
+
+* Send HTTP errors 400 to the crash report system
+
+## 1.3.1rc2 06/04/2015
+
+* Fix race condition during old project import
+
+## 1.3.1rc1 05/04/2015
+
+* Fix rare occasion when user manage to put text in port field
+* Fix a crash when exporting vpcs startup script
+* Fix an issue with sending iourc when a topologies is reloaded
+* Solve issue when iourc contains non ascii characters
+* Handle corrupted zip file with IOS image
+* Don't crash if we try to contact a non GNS3 remote server returning JSON
+* Skip tests in package
+* Check port range
+* Add a warning about too much ram for IOS
+* Fix crash if project is already closed
+* Check if wait for connection thread still running before emitting a signal.
+* Check if process files thread still running before emitting a signal.
+* Raven is an optionnal dependencies for Debian
+* Fix crash if a dumped topology as no node during save as
+* Fix: remove old ID references for ATM and Frame-Relay switches.
+
 ## 1.3.0 30/03/2015
 
 * Fix etherswitch router

MANIFEST.in

@@ -5,7 +5,6 @@ include LICENSE
 include MANIFEST.in
 include tox.ini
 recursive-exclude tests *
-recursive-include docs *
 recursive-include gns3 *
 recursive-exclude * __pycache__
 recursive-exclude * *.py[co]

gns3/crash_report.py

@@ -17,9 +17,16 @@
 
 import sys
 import os
-import raven
-import struct
 import platform
+import struct
+
+try:
+    import raven
+    RAVEN_AVAILABLE = True
+except ImportError:
+    # raven is not installed with deb package in order to simplify packaging
+    RAVEN_AVAILABLE = False
+
 
 from .version import __version__
 from .servers import Servers
@@ -34,7 +41,7 @@ class CrashReport:
     Report crash to a third party service
     """
 
-    DSN = "sync+https://2e90f3a4dc094b39a94864ae1ced969c:fc65363ea35245f28ae2b7205de744c9@app.getsentry.com/38506"
+    DSN = "sync+https://93967ffc7e08401fa0b7578ecf08256b:8c0a5bcbc99e42f1819c6870d6362122@app.getsentry.com/38506"
     if hasattr(sys, "frozen"):
         cacert = os.path.join(os.getcwd(), "cacert.pem")
         if os.path.isfile(cacert):
@@ -47,6 +54,8 @@ class CrashReport:
         self._client = None
 
     def captureException(self, exception, value, tb):
+        if not RAVEN_AVAILABLE:
+            return
         local_server = Servers.instance().localServerSettings()
         if local_server["report_errors"]:
             if self._client is None:

gns3/http_client.py

@@ -30,6 +30,10 @@ import logging
 log = logging.getLogger(__name__)
 
 
+class HttpBadRequest(Exception):
+    pass
+
+
 class HTTPClient(QtCore.QObject):
 
     """
@@ -258,6 +262,14 @@ class HTTPClient(QtCore.QObject):
             if callback is not None:
                 callback({"message": msg}, error=True, server=self)
             return
+
+        if "version" not in params or "local" not in params:
+            msg = "The remote server {}://{}:{} is not a GNS 3 server".format(self.scheme, self.host, self.port)
+            log.error(msg)
+            if callback is not None:
+                callback({"message": msg}, error=True, server=self)
+            return
+
         if params["version"] != __version__:
             msg = "Client version {} differs with server version {}".format(__version__, params["version"])
             log.error(msg)
@@ -325,12 +337,17 @@ class HTTPClient(QtCore.QObject):
 
     def _processResponse(self, response, callback, context):
 
+        status = None
+        body = None
+
         if "query_id" in context:
             self.notify_progress_end_query(context["query_id"])
         if response.error() != QtNetwork.QNetworkReply.NoError:
             error_code = response.error()
             if error_code < 200:
                 self._connected = False
+            else:
+                status = response.attribute(QtNetwork.QNetworkRequest.HttpStatusCodeAttribute)
             error_message = response.errorString()
             log.info("Response error: {}".format(error_message))
             body = bytes(response.readAll()).decode()
@@ -357,6 +374,8 @@ class HTTPClient(QtCore.QObject):
                 else:
                     callback(params, server=self, context=context)
         response.deleteLater()
+        if status == 400:
+            raise HttpBadRequest(body)
 
     def dump(self):
         """

gns3/main_window.py

@@ -1293,7 +1293,7 @@ class MainWindow(QtGui.QMainWindow, Ui_MainWindow):
         except FileExistsError:
             pass
         except OSError as e:
-            QtGui.QMessageBox.critical(self, "Save project", "Could not create project directory {}: {}".format(project_dir), e)
+            QtGui.QMessageBox.critical(self, "Save project", "Could not create project directory {}: {}".format(project_dir, e))
             return
 
         if self._project.temporary():

gns3/modules/dynamips/nodes/atm_switch.py

@@ -128,8 +128,7 @@ class ATMSwitch(Device):
             if self.hasAllocatedName(new_settings["name"]):
                 self.error_signal.emit(self.id(), 'Name "{}" is already used by another node'.format(new_settings["name"]))
                 return
-            params = {"id": self._atmsw_id,
-                      "name": new_settings["name"]}
+            params["name"] = new_settings["name"]
             updated = True
 
         if updated:

gns3/modules/dynamips/nodes/frame_relay_switch.py

@@ -129,8 +129,7 @@ class FrameRelaySwitch(Device):
             if self.hasAllocatedName(new_settings["name"]):
                 self.error_signal.emit(self.id(), 'Name "{}" is already used by another node'.format(new_settings["name"]))
                 return
-            params = {"id": self._frsw_id,
-                      "name": new_settings["name"]}
+            params["name"] = new_settings["name"]
             updated = True
 
         if updated:

gns3/modules/dynamips/pages/ios_router_preferences_page.py

@@ -308,7 +308,7 @@ class IOSRouterPreferencesPage(QtGui.QWidget, Ui_IOSRouterPreferencesPageWidget)
                     decompressed_size += zip_info.file_size
             else:
                 decompressed_size = os.path.getsize(path)
-        except OSError:
+        except (zipfile.BadZipFile, OSError):
             return 0
 
         # get the size in MB

gns3/modules/dynamips/ui/ios_router_wizard.ui

@@ -6,7 +6,7 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>517</width>
+    <width>585</width>
     <height>398</height>
    </rect>
   </property>
@@ -197,7 +197,7 @@
     <string>Memory</string>
    </property>
    <property name="subTitle">
-    <string>Please check the amount of memory (RAM) that you allocate to IOS. Not enough RAM could prevent IOS to start.</string>
+    <string>Please check the amount of memory (RAM) that you allocate to IOS. Too much or not enough RAM could prevent IOS to start.</string>
    </property>
    <layout class="QGridLayout" name="gridLayout_2">
     <item row="0" column="0">
@@ -239,10 +239,10 @@
       </property>
      </widget>
     </item>
-    <item row="1" column="0" colspan="2">
+    <item row="1" column="0" colspan="3">
      <widget class="QLabel" name="label">
       <property name="text">
-       <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;&lt;a href=&quot;http://tools.cisco.com/ITDIT/CFN/jsp/SearchBySoftware.jsp&quot;&gt;&lt;span style=&quot; text-decoration: underline; color:#0000ff;&quot;&gt;Check for minimum RAM requirement&lt;/span&gt;&lt;/a&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+       <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;&lt;a href=&quot;http://tools.cisco.com/ITDIT/CFN/jsp/SearchBySoftware.jsp&quot;&gt;&lt;span style=&quot; text-decoration: underline; color:#0000ff;&quot;&gt;Check for minimum and maximum RAM requirement&lt;/span&gt;&lt;/a&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
       </property>
       <property name="wordWrap">
        <bool>false</bool>

gns3/modules/dynamips/ui/ios_router_wizard_ui.py

@@ -1,9 +1,9 @@
 # -*- coding: utf-8 -*-
 
-# Form implementation generated from reading ui file '/home/grossmj/PycharmProjects/gns3-gui/gns3/modules/dynamips/ui/ios_router_wizard.ui'
+# Form implementation generated from reading ui file '/Users/noplay/code/gns3/gns3-gui/gns3/modules/dynamips/ui/ios_router_wizard.ui'
 #
-# Created: Fri Mar 13 11:09:58 2015
-#      by: PyQt4 UI code generator 4.10.4
+# Created: Wed Apr  1 15:15:16 2015
+#      by: PyQt4 UI code generator 4.11.3
 #
 # WARNING! All changes made in this file will be lost!
 
@@ -26,7 +26,7 @@ except AttributeError:
 class Ui_IOSRouterWizard(object):
     def setupUi(self, IOSRouterWizard):
         IOSRouterWizard.setObjectName(_fromUtf8("IOSRouterWizard"))
-        IOSRouterWizard.resize(517, 398)
+        IOSRouterWizard.resize(585, 398)
         IOSRouterWizard.setModal(True)
         self.uiServerWizardPage = QtGui.QWizardPage()
         self.uiServerWizardPage.setObjectName(_fromUtf8("uiServerWizardPage"))
@@ -141,7 +141,7 @@ class Ui_IOSRouterWizard(object):
         self.label.setWordWrap(False)
         self.label.setOpenExternalLinks(True)
         self.label.setObjectName(_fromUtf8("label"))
-        self.gridLayout_2.addWidget(self.label, 1, 0, 1, 2)
+        self.gridLayout_2.addWidget(self.label, 1, 0, 1, 3)
         IOSRouterWizard.addPage(self.uiMemoryWizardPage)
         self.uiNetworkAdaptersWizardPage = QtGui.QWizardPage()
         self.uiNetworkAdaptersWizardPage.setObjectName(_fromUtf8("uiNetworkAdaptersWizardPage"))
@@ -304,11 +304,11 @@ class Ui_IOSRouterWizard(object):
         self.uiChassisLabel.setText(_translate("IOSRouterWizard", "Chassis:", None))
         self.uiEtherSwitchCheckBox.setText(_translate("IOSRouterWizard", "This is an EtherSwitch router", None))
         self.uiMemoryWizardPage.setTitle(_translate("IOSRouterWizard", "Memory", None))
-        self.uiMemoryWizardPage.setSubTitle(_translate("IOSRouterWizard", "Please check the amount of memory (RAM) that you allocate to IOS. Not enough RAM could prevent IOS to start.", None))
+        self.uiMemoryWizardPage.setSubTitle(_translate("IOSRouterWizard", "Please check the amount of memory (RAM) that you allocate to IOS. Too much or not enough RAM could prevent IOS to start.", None))
         self.uiRamLabel.setText(_translate("IOSRouterWizard", "Default RAM:", None))
         self.uiRamSpinBox.setSuffix(_translate("IOSRouterWizard", " MiB", None))
         self.uiTestIOSImagePushButton.setText(_translate("IOSRouterWizard", "&Test IOS image", None))
-        self.label.setText(_translate("IOSRouterWizard", "<html><head/><body><p><a href=\"http://tools.cisco.com/ITDIT/CFN/jsp/SearchBySoftware.jsp\"><span style=\" text-decoration: underline; color:#0000ff;\">Check for minimum RAM requirement</span></a></p></body></html>", None))
+        self.label.setText(_translate("IOSRouterWizard", "<html><head/><body><p><a href=\"http://tools.cisco.com/ITDIT/CFN/jsp/SearchBySoftware.jsp\"><span style=\" text-decoration: underline; color:#0000ff;\">Check for minimum and maximum RAM requirement</span></a></p></body></html>", None))
         self.uiNetworkAdaptersWizardPage.setTitle(_translate("IOSRouterWizard", "Network adapters", None))
         self.uiNetworkAdaptersWizardPage.setSubTitle(_translate("IOSRouterWizard", "Please choose the default network adapters that should be inserted into every new instance of this router.", None))
         self.uiSlot0Label.setText(_translate("IOSRouterWizard", "slot 0:", None))

gns3/modules/dynamips/utils/decompress_ios_thread.py

@@ -19,6 +19,8 @@
 Thread to wait for an IOS image to be decompressed.
 """
 
+import zipfile
+
 from gns3.qt import QtCore
 from .decompress_ios import decompressIOS
 
@@ -52,6 +54,9 @@ class DecompressIOSThread(QtCore.QThread):
         self._is_running = True
         try:
             decompressIOS(self._ios_image, self._destination_file)
+        except zipfile.BadZipFile as e:
+             self.error.emit("File {} is corrupted {}".format(self._ios_image, e), True)
+             return
         except OSError as e:
             self.error.emit("Could not decompress {}: {}".format(self._ios_image, e), True)
             return

gns3/modules/iou/__init__.py

@@ -282,8 +282,8 @@ class IOU(Module):
 
         if len(self._settings["iourc_path"]) > 0:
             try:
-                with open(self._settings["iourc_path"]) as f:
-                    settings["iourc_content"] = f.read()
+                with open(self._settings["iourc_path"], 'rb') as f:
+                    settings["iourc_content"] = f.read().decode("utf-8")
             except OSError as e:
                 print("Can't open iourc file {}: {}".format(self._settings["iourc_path"], e))
 

gns3/modules/iou/iou_device.py

@@ -150,10 +150,18 @@ class IOUDevice(VM):
         # other initial settings will be applied when the router has been created
         if initial_settings:
             self._inital_settings = initial_settings
+        else:
+            self._inital_settings = {}
 
         if initial_config:
             params["initial_config_content"] = self._readBaseConfig(initial_config)
 
+        if len(self._module._settings["iourc_path"]) > 0:
+            try:
+                with open(self._module._settings["iourc_path"], 'rb') as f:
+                    self._inital_settings["iourc_content"] = f.read().decode("utf-8")
+            except OSError as e:
+                print("Can't open iourc file {}: {}".format(self._module._settings["iourc_path"], e))
         self.httpPost("/iou/vms", self._setupCallback, body=params)
 
     def _setupCallback(self, result, error=False, **kwargs):

gns3/modules/vpcs/vpcs_device.py

@@ -356,7 +356,7 @@ class VPCSDevice(VM):
             self.server_error_signal.emit(self.id(), result["message"])
         else:
 
-            if "startup_script" in result:
+            if "startup_script" in result and result["startup_script"] is not None:
                 config_path = os.path.join(self._export_directory, normalize_filename(self.name())) + "_startup.vpc"
                 config = result["startup_script"].encode("utf-8")
                 try:

gns3/pages/server_preferences_page.py

@@ -110,7 +110,11 @@ class ServerPreferencesPage(QtGui.QWidget, Ui_ServerPreferencesPageWidget):
         """
 
         host = item.text(0)
-        port = int(item.text(1))
+        try:
+            port = int(item.text(1))
+        except ValueError:
+            QtGui.QMessageBox.critical(self, "Remote server", "Invalid port")
+            return
         self.uiRemoteServerPortLineEdit.setText(host)
         self.uiRemoteServerPortSpinBox.setValue(port)
 
@@ -232,6 +236,16 @@ class ServerPreferencesPage(QtGui.QWidget, Ui_ServerPreferencesPageWidget):
         new_settings["projects_path"] = current_settings["projects_path"]
         new_settings["report_errors"] = current_settings["report_errors"]
 
+        if new_settings["console_end_port_range"] <= new_settings["console_start_port_range"]:
+            QtGui.QMessageBox.critical(self, "Local", "Invalid console port range from {} to {}".format(new_settings["console_start_port_range"],
+                                                                                                        new_settings["console_end_port_range"]))
+            return
+
+        if new_settings["udp_end_port_range"] <= new_settings["udp_start_port_range"]:
+            QtGui.QMessageBox.critical(self, "Local", "Invalid UDP port range from {} to {}".format(new_settings["udp_start_port_range"],
+                                                                                                    new_settings["udp_end_port_range"]))
+            return
+
         if new_settings["auto_start"]:
             if not os.path.isfile(new_settings["path"]):
                 QtGui.QMessageBox.critical(self, "Local server", "Could not find local server {}".format(new_settings["path"]))

gns3/project.py

@@ -49,7 +49,10 @@ class Project(QtCore.QObject):
         self._type = None
         self._name = "untitled"
         self._project_instances.add(self)
+
+        # Manage project creations on multiple servers
         self._created_servers = set()
+        self._callback_finish_creating_on_server = {}
 
         super().__init__()
 
@@ -223,17 +226,22 @@ class Project(QtCore.QObject):
         """
 
         if server not in self._created_servers:
-            func = functools.partial(self._projectOnServerCreated, method, path, callback, body, context=context)
+            func = functools.partial(self._projectOnServerCreated, method, path, callback, body, context=context, server=server)
 
-            body = {
-                "name": self._name,
-                "temporary": self._temporary,
-                "project_id": self._id
-            }
-            if server == self._servers.localServer():
-                body["path"] = self.filesDir()
+            if server not in self._callback_finish_creating_on_server:
+                self._callback_finish_creating_on_server[server] = []
+                body = {
+                    "name": self._name,
+                    "temporary": self._temporary,
+                    "project_id": self._id
+                }
+                if server == self._servers.localServer():
+                    body["path"] = self.filesDir()
 
-            server.post("/projects", func, body)
+                server.post("/projects", func, body)
+            else:
+                # If the project creation is already in progress we bufferizze the query
+                self._callback_finish_creating_on_server[server].append(func)
         else:
             self._projectOnServerCreated(method, path, callback, body, params={}, server=server, context=context)
 
@@ -272,6 +280,13 @@ class Project(QtCore.QObject):
         path = "/projects/{project_id}{path}".format(project_id=self._id, path=path)
         server.createHTTPQuery(method, path, callback, body=body, context=context)
 
+        # Call all operations waiting for project creation:
+        if server in self._callback_finish_creating_on_server:
+            callbacks = self._callback_finish_creating_on_server[server]
+            del self._callback_finish_creating_on_server[server]
+            for call in callbacks:
+                call()
+
     def close(self, local_server_shutdown=False):
         """Close project"""
 
@@ -307,7 +322,10 @@ class Project(QtCore.QObject):
         if len(self._created_servers) == 0:
             self._closed = True
             self.project_closed_signal.emit()
-            self._project_instances.remove(self)
+            try:
+                self._project_instances.remove(self)
+            except KeyError:
+                return
 
     def moveFromTemporaryToPath(self, new_path):
         """

gns3/topology.py

@@ -514,8 +514,9 @@ class Topology(object):
         :params: A topology dictionnary
         """
         topology["project_id"] = str(uuid.uuid4())
-        for key, node in enumerate(topology["topology"]["nodes"]):
-            topology["topology"]["nodes"][key]["vm_id"] = str(uuid.uuid4())
+        if "nodes" in topology["topology"]:
+            for key, node in enumerate(topology["topology"]["nodes"]):
+                topology["topology"]["nodes"][key]["vm_id"] = str(uuid.uuid4())
         return topology
 
     def loadFile(self, path, project):
@@ -743,7 +744,6 @@ class Topology(object):
                     image_path = topology_image["path"]
 
                 image_path = os.path.normpath(image_path)
-                print(image_path)
                 if not os.path.isfile(image_path):
                     topology_file_errors.append("Path to image {} doesn't exist".format(image_path))
                     continue

gns3/utils/process_files_thread.py

@@ -84,8 +84,6 @@ class ProcessFilesThread(QtCore.QThread):
 
             # start create the destination sub-directories
             for directory in dirs:
-                if not self._is_running:
-                    return
                 try:
                     destination_dir = os.path.join(base_dir, directory)
                     os.makedirs(destination_dir)
@@ -94,11 +92,11 @@ class ProcessFilesThread(QtCore.QThread):
                 except OSError as e:
                     self.error.emit("Could not create directory {}: {}".format(destination_dir, e), True)
                     return
+                if not self._is_running:
+                    return
 
             # finally the files themselves
             for sfile in filenames:
-                if not self._is_running:
-                    return
                 source_file = os.path.join(path, sfile)
                 destination_file = os.path.join(base_dir, sfile)
                 try:
@@ -113,6 +111,8 @@ class ProcessFilesThread(QtCore.QThread):
                     else:
                         log.warning("Cannot copy: {}".format(e))
                         self.error.emit("Could not copy file to {}: {}".format(destination_file, e), False)
+                if not self._is_running:
+                    return
                 copied += 1
                 # update the progress made
                 progress = float(copied) / file_count * 100

gns3/utils/wait_for_connection_thread.py

@@ -71,7 +71,11 @@ class WaitForConnectionThread(QtCore.QThread):
             connection_success = True
             break
 
+        if not self._is_running:
+            return
+
         if not connection_success:
+
             # let the GUI know about the connection was unsuccessful and finish the thread
             self.error.emit("Could not connect to {} on port {}: {}".format(self._host,
                                                                             self._port,

gns3/version.py

@@ -25,5 +25,5 @@ or negative for a release candidate or beta (after the base version
 number has been incremented)
 """
 
-__version__ = "1.3.0"
-__version_info__ = (1, 3, 0, 0)
+__version__ = "1.3.1"
+__version_info__ = (1, 3, 1, 0)

setup.py

@@ -46,17 +46,17 @@ setup(
     long_description=open("README.rst", "r").read(),
     install_requires=[
         "apache-libcloud>=0.14.1",
-        "requests==2.4.3",
-        "paramiko==1.15.1",
-        "gns3-converter",
-        "raven==5.2.0"
+        "requests>=2.4.3",
+        "paramiko>=1.15.1",
+        "gns3-converter>=1.2.3",
+        "raven>=5.2.0"
     ],
     entry_points={
         "gui_scripts": [
             "gns3 = gns3.main:main",
         ]
     },
-    packages=find_packages(),
+    packages=find_packages(".", exclude=["docs", "tests"]),
     include_package_data=True,
     package_data={"gns3": ["configs/*.txt"]},
     platforms="any",

tests/test_http_client.py

@@ -84,7 +84,7 @@ def test_post_not_connected(http_client, request, network_manager, response):
     assert network_manager.get.called
 
     response.header.return_value = "application/json"
-    response.readAll.return_value = ("{\"version\": \"" + __version__ + "\"}").encode()
+    response.readAll.return_value = ("{\"version\": \"" + __version__ + "\", \"local\": true}").encode()
 
     # Trigger the completion of /version
     response.finished.emit()
@@ -98,7 +98,6 @@ def test_post_not_connected(http_client, request, network_manager, response):
     assert callback.called
 
     args, kwargs = callback.call_args
-    print(kwargs["context"])
     assert kwargs["context"]["toto"] == 42
 
 

tests/test_project.py

@@ -119,6 +119,44 @@ def test_project_post_non_created_project_remote_server(remote_server):
         assert kwargs["body"] == {"test": "test"}
 
 
+def test_project_post_non_created_project_remote_server_two_query(remote_server):
+    """
+    Test a post on a remote servers. The project
+    is not created on the server and should be created automaticaly.
+    And after make the call
+    """
+
+    uuid = uuid4()
+    project = Project()
+    project._created_servers = set()
+    project.setId(uuid)
+
+    with patch("gns3.http_client.HTTPClient.createHTTPQuery") as mock:
+        project.post(remote_server, "/test", lambda: 0, body={"test": "test"})
+        args, kwargs = mock.call_args
+
+        assert args[0] == "POST"
+        assert args[1] == "/projects"
+        assert kwargs["body"] == {"name": "untitled", "temporary": False, "project_id": uuid}
+        project.post(remote_server, "/test2", lambda: 0, body={"test": "test"})
+
+        assert mock.call_count == 1
+        args[2]({}, server=remote_server)
+
+        assert len(project._created_servers) == 1
+
+        calls = mock.mock_calls
+        name, args, kwargs = mock.mock_calls[1]
+        assert args[0] == "POST"
+        assert args[1] == "/projects/{uuid}/test".format(uuid=uuid)
+        assert kwargs["body"] == {"test": "test"}
+
+        args, kwargs = mock.call_args
+        assert args[0] == "POST"
+        assert args[1] == "/projects/{uuid}/test2".format(uuid=uuid)
+        assert kwargs["body"] == {"test": "test"}
+
+
 def test_project_post_on_created_project(local_server):
     """
     Test a post on a remote servers.

tests/test_topology.py

@@ -401,10 +401,14 @@ def test_load_1_2_topology(project, monkeypatch, main_window, tmpdir):
 
     monkeypatch.setattr('gns3.main_window.MainWindow.instance', lambda: main_window)
 
+    project_call = 0
     # We return an uuid for each HTTP post
+
     def http_loader(self, method, path, callback, body={}, **kwargs):
         if path == "/projects":
             callback({"project_id": uuid.uuid4(), "path": str(tmpdir)}, error=False, server=local_server)
+            project_call += 1
+            assert project_call < 2
         else:
             callback({"vm_id": uuid.uuid4()})