diff options
Diffstat (limited to 'synapse/app/__init__.py')
| -rw-r--r-- | synapse/app/__init__.py | 34 |
1 files changed, 25 insertions, 9 deletions
diff --git a/synapse/app/__init__.py b/synapse/app/__init__.py index c3afcc573b..f56f5fcc13 100644 --- a/synapse/app/__init__.py +++ b/synapse/app/__init__.py @@ -12,22 +12,38 @@ # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. - +import logging import sys from synapse import python_dependencies # noqa: E402 sys.dont_write_bytecode = True +logger = logging.getLogger(__name__) try: python_dependencies.check_requirements() -except python_dependencies.MissingRequirementError as e: - message = "\n".join([ - "Missing Requirement: %s" % (str(e),), - "To install run:", - " pip install --upgrade --force \"%s\"" % (e.dependency,), - "", - ]) - sys.stderr.writelines(message) +except python_dependencies.DependencyException as e: + sys.stderr.writelines(e.message) sys.exit(1) + + +def check_bind_error(e, address, bind_addresses): + """ + This method checks an exception occurred while binding on 0.0.0.0. + If :: is specified in the bind addresses a warning is shown. + The exception is still raised otherwise. + + Binding on both 0.0.0.0 and :: causes an exception on Linux and macOS + because :: binds on both IPv4 and IPv6 (as per RFC 3493). + When binding on 0.0.0.0 after :: this can safely be ignored. + + Args: + e (Exception): Exception that was caught. + address (str): Address on which binding was attempted. + bind_addresses (list): Addresses on which the service listens. + """ + if address == '0.0.0.0' and '::' in bind_addresses: + logger.warn('Failed to listen on 0.0.0.0, continuing because listening on [::]') + else: + raise e |