From cfd0216554a96f1acb98c55284eac10d4a2bfc2a Mon Sep 17 00:00:00 2001
From: grossmj <grossmj@gns3.net>
Date: Wed, 18 Apr 2018 17:19:44 +0800
Subject: [PATCH 1/9] Disable TraceNG for version 2.1.5

---
 gns3server/controller/__init__.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/gns3server/controller/__init__.py b/gns3server/controller/__init__.py
index d5aca607..50181732 100644
--- a/gns3server/controller/__init__.py
+++ b/gns3server/controller/__init__.py
@@ -158,8 +158,10 @@ class Controller:
         builtins.append(Appliance(uuid.uuid3(uuid.NAMESPACE_DNS, "ethernet_hub"), {"node_type": "ethernet_hub", "name": "Ethernet hub", "category": 1, "symbol": ":/symbols/hub.svg"}, builtin=True))
         builtins.append(Appliance(uuid.uuid3(uuid.NAMESPACE_DNS, "frame_relay_switch"), {"node_type": "frame_relay_switch", "name": "Frame Relay switch", "category": 1, "symbol": ":/symbols/frame_relay_switch.svg"}, builtin=True))
         builtins.append(Appliance(uuid.uuid3(uuid.NAMESPACE_DNS, "atm_switch"), {"node_type": "atm_switch", "name": "ATM switch", "category": 1, "symbol": ":/symbols/atm_switch.svg"}, builtin=True))
-        if sys.platform.startswith("win"):
-            builtins.append(Appliance(uuid.uuid3(uuid.NAMESPACE_DNS, "traceng"), {"node_type": "traceng", "name": "TraceNG", "default_name_format": "TraceNG-{0}", "category": 2, "symbol": ":/symbols/traceng.svg", "properties": {}}, builtin=True))
+
+        #FIXME: disable TraceNG
+        #if sys.platform.startswith("win"):
+        #    builtins.append(Appliance(uuid.uuid3(uuid.NAMESPACE_DNS, "traceng"), {"node_type": "traceng", "name": "TraceNG", "default_name_format": "TraceNG-{0}", "category": 2, "symbol": ":/symbols/traceng.svg", "properties": {}}, builtin=True))
         for b in builtins:
             self._appliances[b.id] = b
 

From 2e9c5590a8bd09f7bcd978b95af716f5f90eb80c Mon Sep 17 00:00:00 2001
From: ziajka <dominik@gns3.net>
Date: Wed, 18 Apr 2018 11:29:02 +0200
Subject: [PATCH 2/9] Release v2.1.5

---
 CHANGELOG                  | 16 ++++++++++++++++
 gns3server/crash_report.py |  2 +-
 gns3server/version.py      |  4 ++--
 3 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG b/CHANGELOG
index f7e7cc88..9e902340 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,21 @@
 # Change Log
 
+## 2.1.5 18/04/2018
+
+* Set the first byte to 0C when generating a random MAC address for a Qemu VM. Ref #1267.
+* Update appliance files.
+* Do not use VMnet0 when allocating VMnet adapters.
+* Use SO_REUSEADDR before calling bind() where missing. Fixes #1289.
+* Do not fail a Dynamips project conversion if a file being used.
+* Catch exceptions when using AsyncioTelnetServer. Fixes #1321.
+* Grid size support for projects.
+* Remove 'include INSTALL' from MANIFEST.
+* Fix issue with start all.
+* Check for valid IP address and prevent to run on non-Windows platforms.
+* Enable UDP tunnel option and use ICMP probing by default.
+* Use the configured IP address to trace.
+* Have TraceNG start without needing cmd.exe
+
 ## 2.1.4 12/03/2018
 
 * Add Juniper JunOS space appliance.
diff --git a/gns3server/crash_report.py b/gns3server/crash_report.py
index 8303eb05..8b62c717 100644
--- a/gns3server/crash_report.py
+++ b/gns3server/crash_report.py
@@ -57,7 +57,7 @@ class CrashReport:
     Report crash to a third party service
     """
 
-    DSN = "sync+https://6b6c2ce19b8545278f7ee00c333175a6:be17229ec8da460e9a126d02b82de5dc@sentry.io/38482"
+    DSN = "sync+https://f732825cd5004443b62a937d7d28c3bf:9e2bb2ac3f07496693fc9839c6193e20@sentry.io/38482"
     if hasattr(sys, "frozen"):
         cacert = get_resource("cacert.pem")
         if cacert is not None and os.path.isfile(cacert):
diff --git a/gns3server/version.py b/gns3server/version.py
index 78adf907..80e2c9a0 100644
--- a/gns3server/version.py
+++ b/gns3server/version.py
@@ -23,8 +23,8 @@
 # or negative for a release candidate or beta (after the base version
 # number has been incremented)
 
-__version__ = "2.1.5dev1"
-__version_info__ = (2, 1, 5, 99)
+__version__ = "2.1.5"
+__version_info__ = (2, 1, 5, 0)
 
 # If it's a git checkout try to add the commit
 if "dev" in __version__:

From 747814f0831300bbad076263f1f45a503f3729d3 Mon Sep 17 00:00:00 2001
From: ziajka <dominik@gns3.net>
Date: Wed, 18 Apr 2018 11:41:30 +0200
Subject: [PATCH 3/9] Development on v2.1.6

---
 gns3server/version.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gns3server/version.py b/gns3server/version.py
index 80e2c9a0..025b7bbd 100644
--- a/gns3server/version.py
+++ b/gns3server/version.py
@@ -23,8 +23,8 @@
 # or negative for a release candidate or beta (after the base version
 # number has been incremented)
 
-__version__ = "2.1.5"
-__version_info__ = (2, 1, 5, 0)
+__version__ = "2.1.6"
+__version_info__ = (2, 1, 6, 99)
 
 # If it's a git checkout try to add the commit
 if "dev" in __version__:

From 20294e284c540a5ce1ceab7c82f1d0c8fca569c9 Mon Sep 17 00:00:00 2001
From: grossmj <grossmj@gns3.net>
Date: Fri, 27 Apr 2018 17:00:28 +0700
Subject: [PATCH 4/9] Fix exception from send_signal() on Windows.

---
 gns3server/compute/vpcs/vpcs_vm.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gns3server/compute/vpcs/vpcs_vm.py b/gns3server/compute/vpcs/vpcs_vm.py
index 787c0aa6..6449bb94 100644
--- a/gns3server/compute/vpcs/vpcs_vm.py
+++ b/gns3server/compute/vpcs/vpcs_vm.py
@@ -313,7 +313,10 @@ class VPCSVM(BaseNode):
 
         log.info("Stopping VPCS instance {} PID={}".format(self.name, self._process.pid))
         if sys.platform.startswith("win32"):
-            self._process.send_signal(signal.CTRL_BREAK_EVENT)
+            try:
+                self._process.send_signal(signal.CTRL_BREAK_EVENT)
+            except OSError:
+                pass
         else:
             try:
                 self._process.terminate()

From 50a922f83e4290f707bb3372ddb8260368f614f8 Mon Sep 17 00:00:00 2001
From: grossmj <grossmj@gns3.net>
Date: Sat, 28 Apr 2018 16:01:43 +0700
Subject: [PATCH 5/9] Offload slow file operations to threads for snapshots and
 project "save as". Ref #1187 #1307.

---
 gns3server/controller/__init__.py             |   8 +-
 gns3server/controller/export_project.py       | 142 ++++++------
 gns3server/controller/import_project.py       | 209 +++++++++---------
 gns3server/controller/project.py              |  40 ++--
 gns3server/controller/snapshot.py             |  48 +++-
 .../handlers/api/compute/project_handler.py   |   4 +-
 .../handlers/api/controller/link_handler.py   |   2 +-
 .../api/controller/project_handler.py         |   4 +-
 .../handlers/api/controller/server_handler.py |   2 +-
 .../handlers/api/controller/symbol_handler.py |   2 +-
 10 files changed, 243 insertions(+), 218 deletions(-)

diff --git a/gns3server/controller/__init__.py b/gns3server/controller/__init__.py
index 50181732..5467c4ba 100644
--- a/gns3server/controller/__init__.py
+++ b/gns3server/controller/__init__.py
@@ -194,13 +194,13 @@ class Controller:
                                                              user=server_config.get("user", ""),
                                                              password=server_config.get("password", ""),
                                                              force=True)
-        except aiohttp.web_exceptions.HTTPConflict as e:
+        except aiohttp.web.HTTPConflict as e:
             log.fatal("Can't access to the local server, make sure anything else is not running on the same port")
             sys.exit(1)
         for c in computes:
             try:
                 yield from self.add_compute(**c)
-            except (aiohttp.web_exceptions.HTTPConflict, KeyError):
+            except (aiohttp.web.HTTPConflict, KeyError):
                 pass  # Skip not available servers at loading
         yield from self.load_projects()
         try:
@@ -228,7 +228,7 @@ class Controller:
             try:
                 yield from compute.close()
             # We don't care if a compute is down at this step
-            except (ComputeError, aiohttp.web_exceptions.HTTPError, OSError):
+            except (ComputeError, aiohttp.web.HTTPError, OSError):
                 pass
         yield from self.gns3vm.exit_vm()
         self._computes = {}
@@ -308,7 +308,7 @@ class Controller:
                         if file.endswith(".gns3"):
                             try:
                                 yield from self.load_project(os.path.join(project_dir, file), load=False)
-                            except (aiohttp.web_exceptions.HTTPConflict, NotImplementedError):
+                            except (aiohttp.web.HTTPConflict, NotImplementedError):
                                 pass  # Skip not compatible projects
         except OSError as e:
             log.error(str(e))
diff --git a/gns3server/controller/export_project.py b/gns3server/controller/export_project.py
index 7e43b894..82c0d4da 100644
--- a/gns3server/controller/export_project.py
+++ b/gns3server/controller/export_project.py
@@ -29,122 +29,125 @@ log = logging.getLogger(__name__)
 
 
 @asyncio.coroutine
-def export_project(project, temporary_dir, include_images=False, keep_compute_id=False,
-                   allow_all_nodes=False, ignore_prefixes=None):
+def export_project(project, temporary_dir, include_images=False, keep_compute_id=False, allow_all_nodes=False):
     """
-    Export the project as zip. It's a ZipStream object.
-    The file will be read chunk by chunk when you iterate on
-    the zip.
+    Export a project to a zip file.
 
-    It will ignore some files like snapshots and
+    The file will be read chunk by chunk when you iterate over the zip stream.
+    Some files like snapshots and packet captures are ignored.
 
     :param temporary_dir: A temporary dir where to store intermediate data
-    :param keep_compute_id: If false replace all compute id by local it's the standard behavior for .gns3project to make them portable
-    :param allow_all_nodes: Allow all nodes type to be include in the zip even if not portable default False
+    :param include images: save OS images to the zip file
+    :param keep_compute_id: If false replace all compute id by local (standard behavior for .gns3project to make it portable)
+    :param allow_all_nodes: Allow all nodes type to be include in the zip even if not portable
+
     :returns: ZipStream object
     """
 
-    # To avoid issue with data not saved we disallow the export of a running topologie
+    # To avoid issue with data not saved we disallow the export of a running project
     if project.is_running():
-        raise aiohttp.web.HTTPConflict(text="Running topology could not be exported")
+        raise aiohttp.web.HTTPConflict(text="Project must be stopped in order to export it")
 
     # Make sure we save the project
     project.dump()
 
-    z = zipstream.ZipFile(allowZip64=True)
+    zstream = zipstream.ZipFile(allowZip64=True)
 
     if not os.path.exists(project._path):
-        raise aiohttp.web.HTTPNotFound(text="The project doesn't exist at location {}".format(project._path))
+        raise aiohttp.web.HTTPNotFound(text="Project could not be found at '{}'".format(project._path))
 
     # First we process the .gns3 in order to be sure we don't have an error
     for file in os.listdir(project._path):
         if file.endswith(".gns3"):
-            images = yield from _export_project_file(project, os.path.join(project._path, file),
-                                          z, include_images, keep_compute_id, allow_all_nodes, temporary_dir)
+            yield from _patch_project_file(project, os.path.join(project._path, file), zstream, include_images, keep_compute_id, allow_all_nodes, temporary_dir)
 
+    # Export the local files
     for root, dirs, files in os.walk(project._path, topdown=True):
-        files = [f for f in files if not _filter_files(os.path.join(root, f))]
+        files = [f for f in files if _is_exportable(os.path.join(root, f))]
         for file in files:
             path = os.path.join(root, file)
-            # Try open the file
+            # check if we can export the file
             try:
                 open(path).close()
             except OSError as e:
-                msg = "Could not export file {}: {}".format(path, e)
-                log.warn(msg)
+                msg = "Could not export file '{}': {}".format(path, e)
+                log.warning(msg)
                 project.controller.notification.emit("log.warning", {"message": msg})
                 continue
+            # ignore the .gns3 file
             if file.endswith(".gns3"):
-                pass
-            else:
-                z.write(path, os.path.relpath(path, project._path), compress_type=zipfile.ZIP_DEFLATED)
+                continue
+            zstream.write(path, os.path.relpath(path, project._path), compress_type=zipfile.ZIP_DEFLATED)
 
+    # Export files from remote computes
     downloaded_files = set()
-
     for compute in project.computes:
         if compute.id != "local":
             compute_files = yield from compute.list_files(project)
             for compute_file in compute_files:
-                if not _filter_files(compute_file["path"]):
+                if _is_exportable(compute_file["path"]):
                     (fd, temp_path) = tempfile.mkstemp(dir=temporary_dir)
                     f = open(fd, "wb", closefd=True)
                     response = yield from compute.download_file(project, compute_file["path"])
                     while True:
-                        data = yield from response.content.read(512)
+                        data = yield from response.content.read(1024)
                         if not data:
                             break
                         f.write(data)
                     response.close()
                     f.close()
-                    z.write(temp_path, arcname=compute_file["path"], compress_type=zipfile.ZIP_DEFLATED)
+                    zstream.write(temp_path, arcname=compute_file["path"], compress_type=zipfile.ZIP_DEFLATED)
                     downloaded_files.add(compute_file['path'])
 
-    return z
+    return zstream
 
 
-def _filter_files(path):
+def _is_exportable(path):
     """
     :returns: True if file should not be included in the final archive
     """
-    s = os.path.normpath(path).split(os.path.sep)
 
+    # do not export snapshots
     if path.endswith("snapshots"):
-        return True
+        return False
 
-    # filter directory of snapshots
+    # do not export directories of snapshots
     if "{sep}snapshots{sep}".format(sep=os.path.sep) in path:
-        return True
+        return False
 
     try:
+        # do not export captures and other temporary directory
+        s = os.path.normpath(path).split(os.path.sep)
         i = s.index("project-files")
         if s[i + 1] in ("tmp", "captures", "snapshots"):
-            return True
+            return False
     except (ValueError, IndexError):
         pass
 
-    file_name = os.path.basename(path)
-    # Ignore log files and OS noises
-    if file_name.endswith('_log.txt') or file_name.endswith('.log') or file_name == '.DS_Store':
-        return True
-
-    return False
+    # do not export log files and OS noise
+    filename = os.path.basename(path)
+    if filename.endswith('_log.txt') or filename.endswith('.log') or filename == '.DS_Store':
+        return False
+    return True
 
 
 @asyncio.coroutine
-def _export_project_file(project, path, z, include_images, keep_compute_id, allow_all_nodes, temporary_dir):
+def _patch_project_file(project, path, zstream, include_images, keep_compute_id, allow_all_nodes, temporary_dir):
     """
-    Take a project file (.gns3) and patch it for the export
+    Patch a project file (.gns3) to export a project.
+    The .gns3 file is renamed to project.gns3
 
-    We rename the .gns3 project.gns3 to avoid the task to the client to guess the file name
-
-    :param path: Path of the .gns3
+    :param path: path of the .gns3 file
     """
 
-    # Image file that we need to include in the exported archive
+    # image files that we need to include in the exported archive
     images = []
 
-    with open(path) as f:
-        topology = json.load(f)
+    try:
+        with open(path) as f:
+            topology = json.load(f)
+    except (OSError, ValueError) as e:
+        raise aiohttp.web.HTTPConflict(text="Project file '{}' cannot be read: {}".format(path, e))
 
     if "topology" in topology:
         if "nodes" in topology["topology"]:
@@ -152,9 +155,9 @@ def _export_project_file(project, path, z, include_images, keep_compute_id, allo
                 compute_id = node.get('compute_id', 'local')
 
                 if node["node_type"] == "virtualbox" and node.get("properties", {}).get("linked_clone"):
-                    raise aiohttp.web.HTTPConflict(text="Topology with a linked {} clone could not be exported. Use qemu instead.".format(node["node_type"]))
+                    raise aiohttp.web.HTTPConflict(text="Projects with a linked {} clone node cannot not be exported. Please use Qemu instead.".format(node["node_type"]))
                 if not allow_all_nodes and node["node_type"] in ["virtualbox", "vmware", "cloud"]:
-                    raise aiohttp.web.HTTPConflict(text="Topology with a {} could not be exported".format(node["node_type"]))
+                    raise aiohttp.web.HTTPConflict(text="Projects with a {} node cannot be exported".format(node["node_type"]))
 
                 if not keep_compute_id:
                     node["compute_id"] = "local"  # To make project portable all node by default run on local
@@ -186,78 +189,69 @@ def _export_project_file(project, path, z, include_images, keep_compute_id, allo
     local_images = set([i['image'] for i in images if i['compute_id'] == 'local'])
 
     for image in local_images:
-        _export_local_images(project, image, z)
+        _export_local_image(image, zstream)
 
     remote_images = set([
         (i['compute_id'], i['image_type'], i['image'])
         for i in images if i['compute_id'] != 'local'])
 
     for compute_id, image_type, image in remote_images:
-        yield from _export_remote_images(project, compute_id, image_type, image, z, temporary_dir)
+        yield from _export_remote_images(project, compute_id, image_type, image, zstream, temporary_dir)
 
-    z.writestr("project.gns3", json.dumps(topology).encode())
+        zstream.writestr("project.gns3", json.dumps(topology).encode())
 
     return images
 
-def _export_local_images(project, image, z):
+def _export_local_image(image, zstream):
     """
-    Take a project file (.gns3) and export images to the zip
+    Exports a local image to the zip file.
 
-    :param image: Image path
-    :param z: Zipfile instance for the export
+    :param image: image path
+    :param zstream: Zipfile instance for the export
     """
-    from ..compute import MODULES
 
+    from ..compute import MODULES
     for module in MODULES:
         try:
-            img_directory = module.instance().get_images_directory()
+            images_directory = module.instance().get_images_directory()
         except NotImplementedError:
             # Some modules don't have images
             continue
 
-        directory = os.path.split(img_directory)[-1:][0]
+        directory = os.path.split(images_directory)[-1:][0]
         if os.path.exists(image):
             path = image
         else:
-            path = os.path.join(img_directory, image)
+            path = os.path.join(images_directory, image)
 
         if os.path.exists(path):
             arcname = os.path.join("images", directory, os.path.basename(image))
-            z.write(path, arcname)
+            zstream.write(path, arcname)
             return
 
 
 @asyncio.coroutine
 def _export_remote_images(project, compute_id, image_type, image, project_zipfile, temporary_dir):
     """
-    Export specific image from remote compute
-    :param project:
-    :param compute_id:
-    :param image_type:
-    :param image:
-    :param project_zipfile:
-    :return:
+    Export specific image from remote compute.
     """
 
-    log.info("Obtaining image `{}` from `{}`".format(image, compute_id))
+    log.info("Downloading image '{}' from compute server '{}'".format(image, compute_id))
 
     try:
         compute = [compute for compute in project.computes if compute.id == compute_id][0]
     except IndexError:
-        raise aiohttp.web.HTTPConflict(
-            text="Cannot export image from `{}` compute. Compute doesn't exist.".format(compute_id))
+        raise aiohttp.web.HTTPConflict(text="Cannot export image from '{}' compute. Compute doesn't exist.".format(compute_id))
 
     (fd, temp_path) = tempfile.mkstemp(dir=temporary_dir)
     f = open(fd, "wb", closefd=True)
     response = yield from compute.download_image(image_type, image)
 
     if response.status != 200:
-        raise aiohttp.web.HTTPConflict(
-            text="Cannot export image from `{}` compute. Compute sent `{}` status.".format(
-                compute_id, response.status))
+        raise aiohttp.web.HTTPConflict(text="Cannot export image from '{}' compute. Compute returned status code {}.".format(compute_id, response.status))
 
     while True:
-        data = yield from response.content.read(512)
+        data = yield from response.content.read(1024)
         if not data:
             break
         f.write(data)
diff --git a/gns3server/controller/import_project.py b/gns3server/controller/import_project.py
index 33329614..97eed7d6 100644
--- a/gns3server/controller/import_project.py
+++ b/gns3server/controller/import_project.py
@@ -26,7 +26,7 @@ import aiohttp
 import itertools
 
 from .topology import load_topology
-
+from ..utils.asyncio import wait_run_in_executor
 
 """
 Handle the import of project from a .gns3project
@@ -38,7 +38,7 @@ def import_project(controller, project_id, stream, location=None, name=None, kee
     """
     Import a project contain in a zip file
 
-    You need to handle OSerror exceptions
+    You need to handle OSError exceptions
 
     :param controller: GNS3 Controller
     :param project_id: ID of the project to import
@@ -46,6 +46,7 @@ def import_project(controller, project_id, stream, location=None, name=None, kee
     :param location: Directory for the project if None put in the default directory
     :param name: Wanted project name, generate one from the .gns3 if None
     :param keep_compute_id: If true do not touch the compute id
+
     :returns: Project
     """
 
@@ -53,115 +54,116 @@ def import_project(controller, project_id, stream, location=None, name=None, kee
         raise aiohttp.web.HTTPConflict(text="The destination path should not contain .gns3")
 
     try:
-        with zipfile.ZipFile(stream) as myzip:
-
-            try:
-                topology = json.loads(myzip.read("project.gns3").decode())
-
-                # We import the project on top of an existing project (snapshots)
-                if topology["project_id"] == project_id:
-                    project_name = topology["name"]
-                else:
-                    # If the project name is already used we generate a new one
-                    if name:
-                        project_name = controller.get_free_project_name(name)
-                    else:
-                        project_name = controller.get_free_project_name(topology["name"])
-            except KeyError:
-                raise aiohttp.web.HTTPConflict(text="Can't import topology the .gns3 is corrupted or missing")
-
-            if location:
-                path = location
+        with zipfile.ZipFile(stream) as zip_file:
+            project_file = zip_file.read("project.gns3").decode()
+    except zipfile.BadZipFile:
+        raise aiohttp.web.HTTPConflict(text="Cannot import project, not a GNS3 project (invalid zip) or project.gns3 file could not be found")
+
+    try:
+        topology = json.loads(project_file)
+        # We import the project on top of an existing project (snapshots)
+        if topology["project_id"] == project_id:
+            project_name = topology["name"]
+        else:
+            # If the project name is already used we generate a new one
+            if name:
+                project_name = controller.get_free_project_name(name)
             else:
-                projects_path = controller.projects_directory()
-                path = os.path.join(projects_path, project_id)
-            try:
-                os.makedirs(path, exist_ok=True)
-            except UnicodeEncodeError as e:
-                raise aiohttp.web.HTTPConflict(text="The project name contain non supported or invalid characters")
-            myzip.extractall(path)
-
-            topology = load_topology(os.path.join(path, "project.gns3"))
-            topology["name"] = project_name
-            # To avoid unexpected behavior (project start without manual operations just after import)
-            topology["auto_start"] = False
-            topology["auto_open"] = False
-            topology["auto_close"] = True
-
-            # Generate a new node id
-            node_old_to_new = {}
+                project_name = controller.get_free_project_name(topology["name"])
+    except (ValueError, KeyError):
+        raise aiohttp.web.HTTPConflict(text="Cannot import project, the project.gns3 file is corrupted")
+
+    if location:
+        path = location
+    else:
+        projects_path = controller.projects_directory()
+        path = os.path.join(projects_path, project_id)
+    try:
+        os.makedirs(path, exist_ok=True)
+    except UnicodeEncodeError:
+        raise aiohttp.web.HTTPConflict(text="The project name contain non supported or invalid characters")
+
+    try:
+        with zipfile.ZipFile(stream) as zip_file:
+            yield from wait_run_in_executor(zip_file.extractall, path)
+    except zipfile.BadZipFile:
+        raise aiohttp.web.HTTPConflict(text="Cannot extract files from GNS3 project (invalid zip)")
+
+    topology = load_topology(os.path.join(path, "project.gns3"))
+    topology["name"] = project_name
+    # To avoid unexpected behavior (project start without manual operations just after import)
+    topology["auto_start"] = False
+    topology["auto_open"] = False
+    topology["auto_close"] = True
+
+    # Generate a new node id
+    node_old_to_new = {}
+    for node in topology["topology"]["nodes"]:
+        if "node_id" in node:
+            node_old_to_new[node["node_id"]] = str(uuid.uuid4())
+            _move_node_file(path, node["node_id"], node_old_to_new[node["node_id"]])
+            node["node_id"] = node_old_to_new[node["node_id"]]
+        else:
+            node["node_id"] = str(uuid.uuid4())
+
+    # Update link to use new id
+    for link in topology["topology"]["links"]:
+        link["link_id"] = str(uuid.uuid4())
+        for node in link["nodes"]:
+            node["node_id"] = node_old_to_new[node["node_id"]]
+
+    # Generate new drawings id
+    for drawing in topology["topology"]["drawings"]:
+        drawing["drawing_id"] = str(uuid.uuid4())
+
+    # Modify the compute id of the node depending of compute capacity
+    if not keep_compute_id:
+        # For some VM type we move them to the GNS3 VM if possible
+        # unless it's a linux host without GNS3 VM
+        if not sys.platform.startswith("linux") or controller.has_compute("vm"):
             for node in topology["topology"]["nodes"]:
-                if "node_id" in node:
-                    node_old_to_new[node["node_id"]] = str(uuid.uuid4())
-                    _move_node_file(path, node["node_id"], node_old_to_new[node["node_id"]])
-                    node["node_id"] = node_old_to_new[node["node_id"]]
-                else:
-                    node["node_id"] = str(uuid.uuid4())
-
-            # Update link to use new id
-            for link in topology["topology"]["links"]:
-                link["link_id"] = str(uuid.uuid4())
-                for node in link["nodes"]:
-                    node["node_id"] = node_old_to_new[node["node_id"]]
-
-            # Generate new drawings id
-            for drawing in topology["topology"]["drawings"]:
-                drawing["drawing_id"] = str(uuid.uuid4())
-
-            # Modify the compute id of the node depending of compute capacity
-            if not keep_compute_id:
-                # For some VM type we move them to the GNS3 VM if possible
-                # unless it's a linux host without GNS3 VM
-                if not sys.platform.startswith("linux") or controller.has_compute("vm"):
-                    for node in topology["topology"]["nodes"]:
-                        if node["node_type"] in ("docker", "qemu", "iou", "nat"):
-                            node["compute_id"] = "vm"
-                else:
-                    # Round-robin through available compute resources.
-                    compute_nodes = itertools.cycle(controller.computes)
-                    for node in topology["topology"]["nodes"]:
-                        node["compute_id"] = next(compute_nodes)
-
-            compute_created = set()
+                if node["node_type"] in ("docker", "qemu", "iou", "nat"):
+                    node["compute_id"] = "vm"
+        else:
+            # Round-robin through available compute resources.
+            compute_nodes = itertools.cycle(controller.computes)
             for node in topology["topology"]["nodes"]:
+                node["compute_id"] = next(compute_nodes)
 
-                if node["compute_id"] != "local":
-                    # Project created on the remote GNS3 VM?
-                    if node["compute_id"] not in compute_created:
-                        compute = controller.get_compute(node["compute_id"])
-                        yield from compute.post("/projects", data={
-                            "name": project_name,
-                            "project_id": project_id,
-                        })
-                        compute_created.add(node["compute_id"])
-
-                    yield from _move_files_to_compute(compute, project_id, path, os.path.join("project-files", node["node_type"], node["node_id"]))
-
-            # And we dump the updated.gns3
-            dot_gns3_path = os.path.join(path, project_name + ".gns3")
-            # We change the project_id to avoid erasing the project
-            topology["project_id"] = project_id
-            with open(dot_gns3_path, "w+") as f:
-                json.dump(topology, f, indent=4)
-            os.remove(os.path.join(path, "project.gns3"))
-
-            if os.path.exists(os.path.join(path, "images")):
-                _import_images(controller, path)
-
-        project = yield from controller.load_project(dot_gns3_path, load=False)
-        return project
-    except zipfile.BadZipFile:
-        raise aiohttp.web.HTTPConflict(text="Can't import topology the file is corrupted or not a GNS3 project (invalid zip)")
+    compute_created = set()
+    for node in topology["topology"]["nodes"]:
+        if node["compute_id"] != "local":
+            # Project created on the remote GNS3 VM?
+            if node["compute_id"] not in compute_created:
+                compute = controller.get_compute(node["compute_id"])
+                yield from compute.post("/projects", data={"name": project_name, "project_id": project_id,})
+                compute_created.add(node["compute_id"])
+            yield from _move_files_to_compute(compute, project_id, path, os.path.join("project-files", node["node_type"], node["node_id"]))
+
+    # And we dump the updated.gns3
+    dot_gns3_path = os.path.join(path, project_name + ".gns3")
+    # We change the project_id to avoid erasing the project
+    topology["project_id"] = project_id
+    with open(dot_gns3_path, "w+") as f:
+        json.dump(topology, f, indent=4)
+    os.remove(os.path.join(path, "project.gns3"))
+
+    if os.path.exists(os.path.join(path, "images")):
+        _import_images(controller, path)
+
+    project = yield from controller.load_project(dot_gns3_path, load=False)
+    return project
 
 
 def _move_node_file(path, old_id, new_id):
     """
-    Move the files from a node when changing his id
+    Move a file from a node when changing its id
 
     :param path: Path of the project
     :param old_id: ID before change
     :param new_id: New node UUID
     """
+
     root = os.path.join(path, "project-files")
     if os.path.exists(root):
         for dirname in os.listdir(root):
@@ -175,8 +177,9 @@ def _move_node_file(path, old_id, new_id):
 @asyncio.coroutine
 def _move_files_to_compute(compute, project_id, directory, files_path):
     """
-    Move the files to a remote compute
+    Move files to a remote compute
     """
+
     location = os.path.join(directory, files_path)
     if os.path.exists(location):
         for (dirpath, dirnames, filenames) in os.walk(location):
@@ -184,7 +187,7 @@ def _move_files_to_compute(compute, project_id, directory, files_path):
                 path = os.path.join(dirpath, filename)
                 dst = os.path.relpath(path, directory)
                 yield from _upload_file(compute, project_id, path, dst)
-        shutil.rmtree(os.path.join(directory, files_path))
+        yield from wait_run_in_executor(shutil.rmtree, os.path.join(directory, files_path))
 
 
 @asyncio.coroutine
@@ -195,6 +198,7 @@ def _upload_file(compute, project_id, file_path, path):
     :param file_path: File path on the controller file system
     :param path: File path on the remote system relative to project directory
     """
+
     path = "/projects/{}/files/{}".format(project_id, path.replace("\\", "/"))
     with open(file_path, "rb") as f:
         yield from compute.http_query("POST", path, f, timeout=None)
@@ -202,11 +206,10 @@ def _upload_file(compute, project_id, file_path, path):
 
 def _import_images(controller, path):
     """
-    Copy images to the images directory or delete them if they
-    already exists.
+    Copy images to the images directory or delete them if they already exists.
     """
-    image_dir = controller.images_path()
 
+    image_dir = controller.images_path()
     root = os.path.join(path, "images")
     for (dirpath, dirnames, filenames) in os.walk(root):
         for filename in filenames:
diff --git a/gns3server/controller/project.py b/gns3server/controller/project.py
index 24306cb6..b3e81a46 100644
--- a/gns3server/controller/project.py
+++ b/gns3server/controller/project.py
@@ -37,6 +37,7 @@ from ..config import Config
 from ..utils.path import check_path_allowed, get_default_project_directory
 from ..utils.asyncio.pool import Pool
 from ..utils.asyncio import locked_coroutine
+from ..utils.asyncio import wait_run_in_executor
 from .export_project import export_project
 from .import_project import import_project
 
@@ -631,27 +632,10 @@ class Project:
         :param name: Name of the snapshot
         """
 
-        if name in [snap.name for snap in self.snapshots.values()]:
-            raise aiohttp.web_exceptions.HTTPConflict(text="The snapshot {} already exist".format(name))
-
+        if name in [snap.name for snap in self._snapshots.values()]:
+            raise aiohttp.web.HTTPConflict(text="The snapshot name {} already exists".format(name))
         snapshot = Snapshot(self, name=name)
-        try:
-            if os.path.exists(snapshot.path):
-                raise aiohttp.web_exceptions.HTTPConflict(text="The snapshot {} already exist".format(name))
-
-            os.makedirs(os.path.join(self.path, "snapshots"), exist_ok=True)
-
-            with tempfile.TemporaryDirectory() as tmpdir:
-                zipstream = yield from export_project(self, tmpdir, keep_compute_id=True, allow_all_nodes=True)
-                try:
-                    with open(snapshot.path, "wb") as f:
-                        for data in zipstream:
-                            f.write(data)
-                except OSError as e:
-                    raise aiohttp.web.HTTPConflict(text="Could not write snapshot file '{}': {}".format(snapshot.path, e))
-        except OSError as e:
-            raise aiohttp.web.HTTPInternalServerError(text="Could not create project directory: {}".format(e))
-
+        yield from snapshot.create()
         self._snapshots[snapshot.id] = snapshot
         return snapshot
 
@@ -857,6 +841,15 @@ class Project:
         while self._loading:
             yield from asyncio.sleep(0.5)
 
+    def _create_duplicate_project_file(self, path, zipstream):
+        """
+        Creates the project file (to be run in its own thread)
+        """
+
+        with open(path, "wb") as f:
+            for data in zipstream:
+                f.write(data)
+
     @asyncio.coroutine
     def duplicate(self, name=None, location=None):
         """
@@ -878,10 +871,9 @@ class Project:
         try:
             with tempfile.TemporaryDirectory() as tmpdir:
                 zipstream = yield from export_project(self, tmpdir, keep_compute_id=True, allow_all_nodes=True)
-                with open(os.path.join(tmpdir, "project.gns3p"), "wb") as f:
-                    for data in zipstream:
-                        f.write(data)
-                with open(os.path.join(tmpdir, "project.gns3p"), "rb") as f:
+                project_path = os.path.join(tmpdir, "project.gns3p")
+                yield from wait_run_in_executor(self._create_duplicate_project_file, project_path, zipstream)
+                with open(project_path, "rb") as f:
                     project = yield from import_project(self._controller, str(uuid.uuid4()), f, location=location, name=name, keep_compute_id=True)
         except (OSError, UnicodeEncodeError) as e:
             raise aiohttp.web.HTTPConflict(text="Can not duplicate project: {}".format(str(e)))
diff --git a/gns3server/controller/snapshot.py b/gns3server/controller/snapshot.py
index 4163a6b1..6061c1a0 100644
--- a/gns3server/controller/snapshot.py
+++ b/gns3server/controller/snapshot.py
@@ -19,11 +19,13 @@
 import os
 import uuid
 import shutil
+import tempfile
 import asyncio
 import aiohttp.web
 from datetime import datetime, timezone
 
-
+from ..utils.asyncio import wait_run_in_executor
+from .export_project import export_project
 from .import_project import import_project
 
 
@@ -71,6 +73,37 @@ class Snapshot:
     def created_at(self):
         return int(self._created_at)
 
+    def _create_snapshot_file(self, zipstream):
+        """
+        Creates the snapshot file (to be run in its own thread)
+        """
+
+        with open(self.path, "wb") as f:
+            for data in zipstream:
+                f.write(data)
+
+    @asyncio.coroutine
+    def create(self):
+        """
+        Create the snapshot
+        """
+
+        if os.path.exists(self.path):
+            raise aiohttp.web.HTTPConflict(text="The snapshot file '{}' already exists".format(self.name))
+
+        snapshot_directory = os.path.join(self._project.path, "snapshots")
+        try:
+            os.makedirs(snapshot_directory, exist_ok=True)
+        except OSError as e:
+            raise aiohttp.web.HTTPInternalServerError(text="Could not create the snapshot directory '{}': {}".format(snapshot_directory, e))
+
+        try:
+            with tempfile.TemporaryDirectory() as tmpdir:
+                zipstream = yield from export_project(self._project, tmpdir, keep_compute_id=True, allow_all_nodes=True)
+                yield from wait_run_in_executor(self._create_snapshot_file, zipstream)
+        except OSError as e:
+            raise aiohttp.web.HTTPConflict(text="Could not create snapshot file '{}': {}".format(self.path, e))
+
     @asyncio.coroutine
     def restore(self):
         """
@@ -78,18 +111,21 @@ class Snapshot:
         """
 
         yield from self._project.delete_on_computes()
-        # We don't send close notif to clients because the close / open dance is purely internal
+        # We don't send close notification to clients because the close / open dance is purely internal
         yield from self._project.close(ignore_notification=True)
-        self._project.controller.notification.emit("snapshot.restored", self.__json__())
+
         try:
-            if os.path.exists(os.path.join(self._project.path, "project-files")):
-                shutil.rmtree(os.path.join(self._project.path, "project-files"))
+            # delete the current project files
+            project_files_path = os.path.join(self._project.path, "project-files")
+            if os.path.exists(project_files_path):
+                yield from wait_run_in_executor(shutil.rmtree, project_files_path)
             with open(self._path, "rb") as f:
                 project = yield from import_project(self._project.controller, self._project.id, f, location=self._project.path)
         except (OSError, PermissionError) as e:
             raise aiohttp.web.HTTPConflict(text=str(e))
+        self._project.controller.notification.emit("snapshot.restored", self.__json__())
         yield from project.open()
-        return project
+        return self._project
 
     def __json__(self):
         return {
diff --git a/gns3server/handlers/api/compute/project_handler.py b/gns3server/handlers/api/compute/project_handler.py
index a7d8f760..6b5968d3 100644
--- a/gns3server/handlers/api/compute/project_handler.py
+++ b/gns3server/handlers/api/compute/project_handler.py
@@ -319,7 +319,7 @@ class ProjectHandler:
             os.makedirs(os.path.dirname(path), exist_ok=True)
             with open(path, 'wb+') as f:
                 while True:
-                    packet = yield from request.content.read(512)
+                    packet = yield from request.content.read(1024)
                     if not packet:
                         break
                     f.write(packet)
@@ -380,7 +380,7 @@ class ProjectHandler:
         try:
             with tempfile.SpooledTemporaryFile(max_size=10000) as temp:
                 while True:
-                    packet = yield from request.content.read(512)
+                    packet = yield from request.content.read(1024)
                     if not packet:
                         break
                     temp.write(packet)
diff --git a/gns3server/handlers/api/controller/link_handler.py b/gns3server/handlers/api/controller/link_handler.py
index 48e394cb..5f15577d 100644
--- a/gns3server/handlers/api/controller/link_handler.py
+++ b/gns3server/handlers/api/controller/link_handler.py
@@ -73,7 +73,7 @@ class LinkHandler:
                                          node.get("adapter_number", 0),
                                          node.get("port_number", 0),
                                          label=node.get("label"))
-        except aiohttp.web_exceptions.HTTPException as e:
+        except aiohttp.web.HTTPException as e:
             yield from project.delete_link(link.id)
             raise e
         response.set_status(201)
diff --git a/gns3server/handlers/api/controller/project_handler.py b/gns3server/handlers/api/controller/project_handler.py
index 8d7337dd..501fec5a 100644
--- a/gns3server/handlers/api/controller/project_handler.py
+++ b/gns3server/handlers/api/controller/project_handler.py
@@ -335,7 +335,7 @@ class ProjectHandler:
         try:
             with tempfile.SpooledTemporaryFile(max_size=10000) as temp:
                 while True:
-                    packet = yield from request.content.read(512)
+                    packet = yield from request.content.read(1024)
                     if not packet:
                         break
                     temp.write(packet)
@@ -448,7 +448,7 @@ class ProjectHandler:
         try:
             with open(path, 'wb+') as f:
                 while True:
-                    packet = yield from request.content.read(512)
+                    packet = yield from request.content.read(1024)
                     if not packet:
                         break
                     f.write(packet)
diff --git a/gns3server/handlers/api/controller/server_handler.py b/gns3server/handlers/api/controller/server_handler.py
index 7de4a66a..972f8c54 100644
--- a/gns3server/handlers/api/controller/server_handler.py
+++ b/gns3server/handlers/api/controller/server_handler.py
@@ -133,7 +133,7 @@ class ServerHandler:
 
     @Route.post(
         r"/debug",
-        description="Dump debug informations to disk (debug directory in config directory). Work only for local server",
+        description="Dump debug information to disk (debug directory in config directory). Work only for local server",
         status_codes={
             201: "Writed"
         })
diff --git a/gns3server/handlers/api/controller/symbol_handler.py b/gns3server/handlers/api/controller/symbol_handler.py
index b0c4600c..7cac242c 100644
--- a/gns3server/handlers/api/controller/symbol_handler.py
+++ b/gns3server/handlers/api/controller/symbol_handler.py
@@ -66,7 +66,7 @@ class SymbolHandler:
         try:
             with open(path, 'wb') as f:
                 while True:
-                    packet = yield from request.content.read(512)
+                    packet = yield from request.content.read(1024)
                     if not packet:
                         break
                     f.write(packet)

From 3b94484914448c5f3a7a1f66a175923860b09c0a Mon Sep 17 00:00:00 2001
From: grossmj <grossmj@gns3.net>
Date: Sat, 28 Apr 2018 16:38:52 +0700
Subject: [PATCH 6/9] Fix bug with export project. Ref #1187 #1307.

---
 gns3server/controller/export_project.py | 3 +--
 gns3server/controller/import_project.py | 4 +++-
 gns3server/controller/snapshot.py       | 2 +-
 3 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/gns3server/controller/export_project.py b/gns3server/controller/export_project.py
index 82c0d4da..37faaf38 100644
--- a/gns3server/controller/export_project.py
+++ b/gns3server/controller/export_project.py
@@ -198,8 +198,7 @@ def _patch_project_file(project, path, zstream, include_images, keep_compute_id,
     for compute_id, image_type, image in remote_images:
         yield from _export_remote_images(project, compute_id, image_type, image, zstream, temporary_dir)
 
-        zstream.writestr("project.gns3", json.dumps(topology).encode())
-
+    zstream.writestr("project.gns3", json.dumps(topology).encode())
     return images
 
 def _export_local_image(image, zstream):
diff --git a/gns3server/controller/import_project.py b/gns3server/controller/import_project.py
index 97eed7d6..a5a89661 100644
--- a/gns3server/controller/import_project.py
+++ b/gns3server/controller/import_project.py
@@ -57,7 +57,9 @@ def import_project(controller, project_id, stream, location=None, name=None, kee
         with zipfile.ZipFile(stream) as zip_file:
             project_file = zip_file.read("project.gns3").decode()
     except zipfile.BadZipFile:
-        raise aiohttp.web.HTTPConflict(text="Cannot import project, not a GNS3 project (invalid zip) or project.gns3 file could not be found")
+        raise aiohttp.web.HTTPConflict(text="Cannot import project, not a GNS3 project (invalid zip)")
+    except KeyError:
+        raise aiohttp.web.HTTPConflict(text="Cannot import project, project.gns3 file could not be found")
 
     try:
         topology = json.loads(project_file)
diff --git a/gns3server/controller/snapshot.py b/gns3server/controller/snapshot.py
index 6061c1a0..70c3d173 100644
--- a/gns3server/controller/snapshot.py
+++ b/gns3server/controller/snapshot.py
@@ -123,8 +123,8 @@ class Snapshot:
                 project = yield from import_project(self._project.controller, self._project.id, f, location=self._project.path)
         except (OSError, PermissionError) as e:
             raise aiohttp.web.HTTPConflict(text=str(e))
-        self._project.controller.notification.emit("snapshot.restored", self.__json__())
         yield from project.open()
+        self._project.controller.notification.emit("snapshot.restored", self.__json__())
         return self._project
 
     def __json__(self):

From a56d5b453f449aebb31494be0fd580dab25ff063 Mon Sep 17 00:00:00 2001
From: grossmj <grossmj@gns3.net>
Date: Sat, 28 Apr 2018 16:46:47 +0700
Subject: [PATCH 7/9] Fix project export tests.

---
 tests/controller/test_export_project.py | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/tests/controller/test_export_project.py b/tests/controller/test_export_project.py
index c1582dc0..edf51aac 100644
--- a/tests/controller/test_export_project.py
+++ b/tests/controller/test_export_project.py
@@ -28,7 +28,7 @@ from unittest.mock import MagicMock
 from tests.utils import AsyncioMagicMock, AsyncioBytesIO
 
 from gns3server.controller.project import Project
-from gns3server.controller.export_project import export_project, _filter_files
+from gns3server.controller.export_project import export_project, _is_exportable
 
 
 @pytest.fixture
@@ -51,14 +51,14 @@ def node(controller, project, async_run):
     return node
 
 
-def test_filter_files():
-    assert not _filter_files("hello/world")
-    assert _filter_files("project-files/tmp")
-    assert _filter_files("project-files/test_log.txt")
-    assert _filter_files("project-files/test.log")
-    assert _filter_files("test/snapshots")
-    assert _filter_files("test/project-files/snapshots")
-    assert _filter_files("test/project-files/snapshots/test.gns3p")
+def test_exportable_files():
+    assert _is_exportable("hello/world")
+    assert not _is_exportable("project-files/tmp")
+    assert not _is_exportable("project-files/test_log.txt")
+    assert not _is_exportable("project-files/test.log")
+    assert not _is_exportable("test/snapshots")
+    assert not _is_exportable("test/project-files/snapshots")
+    assert not _is_exportable("test/project-files/snapshots/test.gns3p")
 
 
 def test_export(tmpdir, project, async_run):

From 305fe2e8179f6eb1001db59788541c417aa9f97d Mon Sep 17 00:00:00 2001
From: grossmj <grossmj@gns3.net>
Date: Sat, 28 Apr 2018 17:42:02 +0700
Subject: [PATCH 8/9] Handle asyncio timeouts. Ref #1307.

---
 gns3server/compute/docker/__init__.py             |  6 +++++-
 gns3server/controller/export_project.py           | 10 ++++++++--
 .../handlers/api/compute/project_handler.py       | 15 +++++++++------
 .../handlers/api/controller/node_handler.py       |  4 +---
 .../handlers/api/controller/project_handler.py    | 15 +++++++++------
 .../handlers/api/controller/symbol_handler.py     | 11 ++++++++---
 6 files changed, 40 insertions(+), 21 deletions(-)

diff --git a/gns3server/compute/docker/__init__.py b/gns3server/compute/docker/__init__.py
index d2fca166..e746f30e 100644
--- a/gns3server/compute/docker/__init__.py
+++ b/gns3server/compute/docker/__init__.py
@@ -198,7 +198,7 @@ class Docker(BaseManager):
             pass
 
         if progress_callback:
-            progress_callback("Pull {} from docker hub".format(image))
+            progress_callback("Pulling '{}' from docker hub".format(image))
         response = yield from self.http_query("POST", "images/create", params={"fromImage": image}, timeout=None)
         # The pull api will stream status via an HTTP JSON stream
         content = ""
@@ -206,6 +206,10 @@ class Docker(BaseManager):
             try:
                 chunk = yield from response.content.read(1024)
             except aiohttp.ServerDisconnectedError:
+                log.error("Disconnected from server while pulling Docker image '{}' from docker hub".format(image))
+                break
+            except asyncio.TimeoutError:
+                log.error("Timeout while pulling Docker image '{}' from docker hub".format(image))
                 break
             if not chunk:
                 break
diff --git a/gns3server/controller/export_project.py b/gns3server/controller/export_project.py
index 37faaf38..df727574 100644
--- a/gns3server/controller/export_project.py
+++ b/gns3server/controller/export_project.py
@@ -90,7 +90,10 @@ def export_project(project, temporary_dir, include_images=False, keep_compute_id
                     f = open(fd, "wb", closefd=True)
                     response = yield from compute.download_file(project, compute_file["path"])
                     while True:
-                        data = yield from response.content.read(1024)
+                        try:
+                            data = yield from response.content.read(1024)
+                        except asyncio.TimeoutError:
+                            raise aiohttp.web.HTTPRequestTimeout(text="Timeout when downloading file '{}' from remote compute server {}:{}".format(compute_file["path"], compute.host, compute.port))
                         if not data:
                             break
                         f.write(data)
@@ -250,7 +253,10 @@ def _export_remote_images(project, compute_id, image_type, image, project_zipfil
         raise aiohttp.web.HTTPConflict(text="Cannot export image from '{}' compute. Compute returned status code {}.".format(compute_id, response.status))
 
     while True:
-        data = yield from response.content.read(1024)
+        try:
+            data = yield from response.content.read(1024)
+        except asyncio.TimeoutError:
+            raise aiohttp.web.HTTPRequestTimeout(text="Timeout when downloading image '{}' from remote compute server {}:{}".format(image, compute.host, compute.port))
         if not data:
             break
         f.write(data)
diff --git a/gns3server/handlers/api/compute/project_handler.py b/gns3server/handlers/api/compute/project_handler.py
index 6b5968d3..904946cf 100644
--- a/gns3server/handlers/api/compute/project_handler.py
+++ b/gns3server/handlers/api/compute/project_handler.py
@@ -319,10 +319,13 @@ class ProjectHandler:
             os.makedirs(os.path.dirname(path), exist_ok=True)
             with open(path, 'wb+') as f:
                 while True:
-                    packet = yield from request.content.read(1024)
-                    if not packet:
+                    try:
+                        chunk = yield from request.content.read(1024)
+                    except asyncio.TimeoutError:
+                        raise aiohttp.web.HTTPRequestTimeout(text="Timeout when writing to file '{}'".format(path))
+                    if not chunk:
                         break
-                    f.write(packet)
+                    f.write(chunk)
 
         except FileNotFoundError:
             raise aiohttp.web.HTTPNotFound()
@@ -380,10 +383,10 @@ class ProjectHandler:
         try:
             with tempfile.SpooledTemporaryFile(max_size=10000) as temp:
                 while True:
-                    packet = yield from request.content.read(1024)
-                    if not packet:
+                    chunk = yield from request.content.read(1024)
+                    if not chunk:
                         break
-                    temp.write(packet)
+                    temp.write(chunk)
                 project.import_zip(temp, gns3vm=bool(int(request.GET.get("gns3vm", "1"))))
         except OSError as e:
             raise aiohttp.web.HTTPInternalServerError(text="Could not import the project: {}".format(e))
diff --git a/gns3server/handlers/api/controller/node_handler.py b/gns3server/handlers/api/controller/node_handler.py
index e02b45f2..65e3a308 100644
--- a/gns3server/handlers/api/controller/node_handler.py
+++ b/gns3server/handlers/api/controller/node_handler.py
@@ -409,8 +409,6 @@ class NodeHandler:
 
         node_type = node.node_type
         path = "/project-files/{}/{}/{}".format(node_type, node.id, path)
-
-        data = yield from request.content.read()
-
+        data = yield from request.content.read()  #FIXME: are we handling timeout or large files correctly?
         yield from node.compute.http_query("POST", "/projects/{project_id}/files{path}".format(project_id=project.id, path=path), data=data, timeout=None, raw=True)
         response.set_status(201)
diff --git a/gns3server/handlers/api/controller/project_handler.py b/gns3server/handlers/api/controller/project_handler.py
index 501fec5a..e487c1d7 100644
--- a/gns3server/handlers/api/controller/project_handler.py
+++ b/gns3server/handlers/api/controller/project_handler.py
@@ -335,10 +335,10 @@ class ProjectHandler:
         try:
             with tempfile.SpooledTemporaryFile(max_size=10000) as temp:
                 while True:
-                    packet = yield from request.content.read(1024)
-                    if not packet:
+                    chunk = yield from request.content.read(1024)
+                    if not chunk:
                         break
-                    temp.write(packet)
+                    temp.write(chunk)
                 project = yield from import_project(controller, request.match_info["project_id"], temp, location=path, name=name)
         except OSError as e:
             raise aiohttp.web.HTTPInternalServerError(text="Could not import the project: {}".format(e))
@@ -448,10 +448,13 @@ class ProjectHandler:
         try:
             with open(path, 'wb+') as f:
                 while True:
-                    packet = yield from request.content.read(1024)
-                    if not packet:
+                    try:
+                        chunk = yield from request.content.read(1024)
+                    except asyncio.TimeoutError:
+                        raise aiohttp.web.HTTPRequestTimeout(text="Timeout when writing to file '{}'".format(path))
+                    if not chunk:
                         break
-                    f.write(packet)
+                    f.write(chunk)
         except FileNotFoundError:
             raise aiohttp.web.HTTPNotFound()
         except PermissionError:
diff --git a/gns3server/handlers/api/controller/symbol_handler.py b/gns3server/handlers/api/controller/symbol_handler.py
index 7cac242c..b9796d94 100644
--- a/gns3server/handlers/api/controller/symbol_handler.py
+++ b/gns3server/handlers/api/controller/symbol_handler.py
@@ -17,6 +17,8 @@
 
 import os
 import aiohttp
+import asyncio
+
 from gns3server.web.route import Route
 from gns3server.controller import Controller
 
@@ -66,10 +68,13 @@ class SymbolHandler:
         try:
             with open(path, 'wb') as f:
                 while True:
-                    packet = yield from request.content.read(1024)
-                    if not packet:
+                    try:
+                        chunk = yield from request.content.read(1024)
+                    except asyncio.TimeoutError:
+                        raise aiohttp.web.HTTPRequestTimeout(text="Timeout when writing to symbol '{}'".format(path))
+                    if not chunk:
                         break
-                    f.write(packet)
+                    f.write(chunk)
         except OSError as e:
             raise aiohttp.web.HTTPConflict(text="Could not write symbol file '{}': {}".format(path, e))
         # Reset the symbol list

From 202e7362a5bd5e15b9b8b45e9e16c13b35586f64 Mon Sep 17 00:00:00 2001
From: grossmj <grossmj@gns3.net>
Date: Sat, 28 Apr 2018 18:48:52 +0700
Subject: [PATCH 9/9] Add command information when uBridge has an error. Ref
 #1289

---
 gns3server/ubridge/ubridge_hypervisor.py | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/gns3server/ubridge/ubridge_hypervisor.py b/gns3server/ubridge/ubridge_hypervisor.py
index 6f70151e..221ef207 100644
--- a/gns3server/ubridge/ubridge_hypervisor.py
+++ b/gns3server/ubridge/ubridge_hypervisor.py
@@ -208,8 +208,8 @@ class UBridgeHypervisor:
             self._writer.write(command.encode())
             yield from self._writer.drain()
         except OSError as e:
-            raise UbridgeError("Lost communication with {host}:{port} :{error}, Dynamips process running: {run}"
-                               .format(host=self._host, port=self._port, error=e, run=self.is_running()))
+            raise UbridgeError("Lost communication with {host}:{port} when sending command '{command}': {error}, uBridge process running: {run}"
+                               .format(host=self._host, port=self._port, command=command, error=e, run=self.is_running()))
 
         # Now retrieve the result
         data = []
@@ -232,8 +232,8 @@ class UBridgeHypervisor:
                     continue
                 if not chunk:
                     if retries > max_retries:
-                        raise UbridgeError("No data returned from {host}:{port}, uBridge process running: {run}"
-                                            .format(host=self._host, port=self._port, run=self.is_running()))
+                        raise UbridgeError("No data returned from {host}:{port} after sending command '{command}', uBridge process running: {run}"
+                                            .format(host=self._host, port=self._port, command=command, run=self.is_running()))
                     else:
                         retries += 1
                         yield from asyncio.sleep(0.1)
@@ -241,16 +241,16 @@ class UBridgeHypervisor:
                 retries = 0
                 buf += chunk.decode("utf-8")
             except OSError as e:
-                raise UbridgeError("Lost communication with {host}:{port} :{error}, uBridge process running: {run}"
-                                   .format(host=self._host, port=self._port, error=e, run=self.is_running()))
+                raise UbridgeError("Lost communication with {host}:{port} after sending command '{command}': {error}, uBridge process running: {run}"
+                                   .format(host=self._host, port=self._port, command=command, error=e, run=self.is_running()))
 
             # If the buffer doesn't end in '\n' then we can't be done
             try:
                 if buf[-1] != '\n':
                     continue
             except IndexError:
-                raise UbridgeError("Could not communicate with {host}:{port}, uBridge process running: {run}"
-                                   .format(host=self._host, port=self._port, run=self.is_running()))
+                raise UbridgeError("Could not communicate with {host}:{port} after sending command '{command}', uBridge process running: {run}"
+                                   .format(host=self._host, port=self._port, command=command, run=self.is_running()))
 
             data += buf.split('\r\n')
             if data[-1] == '':