Client

The ONVIFClient class provides various configuration options to customize the connection behavior, caching strategy, security settings, and debugging capabilities. Below is a detailed description of all available parameters:

Basic Parameters

Name	Type	Required	Default	Description
`host`	`str`	✅ Yes	required	IP address or hostname of the ONVIF device (e.g., `"192.168.1.17"` or `"cctv.example.com"`)
`port`	`int`	✅ Yes	required	Port number for ONVIF service (common ports: `80`, `8000`, `8080`, `8899`, `2020`, `443`)
`username`	`str ⏐ None`	❌ No	`None`	Username for device authentication
`password`	`str ⏐ None`	❌ No	`None`	Password for device authentication

Warning

As of version v0.3.0, the username and password parameters are no longer mandatory, in order to maximize compatibility with devices that lack a default user or have no user at all. However, if your device does have a user, you must of course enter the appropriate username and password.

Furthermore, this implementation enables the class constructor to perform operations marked as PRE_AUTH (according to ONVIF specifications); such as GetSystemDateAndTime or GetCapabilities within the Device service that require no authentication.

Connection Parameters

Name	Type	Required	Default	Description
`http_digest` `0.3.0`	`str`	❌ No	`False`	`True` = use HTTP Digest / `False` = use WS-UsernameToken¹
`timeout`	`int`	❌ No	`10`	Connection timeout in seconds for SOAP requests
`use_https`	`bool`	❌ No	`False`	Use HTTPS instead of HTTP for secure communication
`verify_ssl`	`bool`	❌ No	`False`	Verify SSL certificates when using HTTPS (set to `False` for self-signed certificates)

Caching Parameters

Name	Type	Required	Default	Description
`cache`	`CacheMode`	❌ No	`CacheMode.DB`	WSDL caching strategy (see Cache Modes below)

Feature Parameters

Name	Type	Required	Default	Description
`apply_patch` `0.0.4`	`bool`	❌ No	`True`	Enable zeep patching for better `xsd:any` field parsing and automatic flattening²
`capture_xml` `0.0.6`	`bool`	❌ No	`False`	Enable XML capture plugin for debugging SOAP requests/responses³
`wsdl_dir` `0.1.0`	`str ⏐ None`	❌ No	`None`	Custom WSDL directory path for using external WSDL files instead of built-in ones (e.g., `/path/to/custom/wsdl`)⁴
`plugins` `0.2.2`	`list[Plugin]`	❌ No	`None`	List of user-provided Zeep plugins (`zeep.Plugin`)⁵

Cache Modes

The library provides three caching strategies via the CacheMode enum:

Mode	Description	Best For	Startup Speed	Disk Usage	Memory Usage
`CacheMode.DB`	Persistent disk cache (SQLite)⁶	Production servers, batch jobs, CLI tools	Fast⁷	Low–Medium	Medium
`CacheMode.MEM`	Process-local in-memory cache	Long-running apps, short-lived sessions	Fast⁷	None	Medium
`CacheMode.NONE`	No WSDL/XSD caching	Testing, debugging	Slowest	None	Low

Recommendation:

Use CacheMode.DB (default) for production applications to maximize performance⁷.

Version History

Removed in v0.4.0: CacheMode.ALL

Usage Examples

Basic Connection

from onvif import ONVIFClient

# Minimal configuration
client = ONVIFClient(
    host="192.168.1.17", 
    port=80, 
    username="admin", 
    password="password"
)

Use HTTP Digest Authentication

0.3.0

Set http_digest to True.

from onvif import ONVIFClient

# Minimal configuration
client = ONVIFClient(
    host="192.168.1.17", 
    port=80, 
    username="admin", 
    password="password",
    http_digest=True  # will use HTTP Digest auth
)

Secure Connection (HTTPS)

from onvif import ONVIFClient

# Connect via HTTPS with custom timeout
client = ONVIFClient(
    host="your-cctv-node.viewplexus.com", 
    port=443,  # HTTPS port
    username="admin", 
    password="password",
    timeout=30,
    use_https=True
)

Performance Optimized (Memory Cache)

from onvif import ONVIFClient, CacheMode

# Use memory-only cache for quick scripts
client = ONVIFClient(
    host="192.168.1.17", 
    port=80, 
    username="admin", 
    password="password",
    cache=CacheMode.MEM
)

No Caching and No Zeep Patching (Testing)

0.0.4

from onvif import ONVIFClient, CacheMode

# Disable all caching for testing
client = ONVIFClient(
    host="192.168.1.17", 
    port=80, 
    username="admin", 
    password="password",
    cache=CacheMode.NONE,
    apply_patch=False  # Use original zeep behavior
)

Debugging Mode (XML Capture)

0.0.6

from onvif import ONVIFClient

# Enable XML capture for debugging
client = ONVIFClient(
    host="192.168.1.17", 
    port=80, 
    username="admin", 
    password="password",
    capture_xml=True  # Captures all SOAP requests/responses
)

# Make some ONVIF calls
device = client.devicemgmt()
info = device.GetDeviceInformation()
services = device.GetCapabilities()

# Access the XML capture plugin
if client.xml_plugin:
    # Get last captured request/response
    print("Last Request XML:")
    print(client.xml_plugin.last_sent_xml)

    print("\nLast Response XML:")
    print(client.xml_plugin.last_received_xml)

    print(f"\nLast Operation: {client.xml_plugin.last_operation}")

    # Get complete history of all requests/responses
    print(f"\nTotal captured operations: {len(client.xml_plugin.history)}")
    for item in client.xml_plugin.history:
        print(f"  - {item['operation']} ({item['type']})")

    # Save captured XML to files
    client.xml_plugin.save_to_file(
        request_file="last_request.xml",
        response_file="last_response.xml"
    )

    # Clear history when done
    client.xml_plugin.clear_history()

XML Capture Plugin

To view all available methods and attributes, please refer to XMLCapturePlugin.

Custom WSDL Directory

0.1.0

from onvif import ONVIFClient

# Use custom WSDL files instead of built-in ones
client = ONVIFClient(
    host="192.168.1.17", 
    port=80, 
    username="admin", 
    password="password",
    wsdl_dir="/path/to/custom/wsdl"  # Custom WSDL directory
)

# All services will automatically use custom WSDL files
device = client.devicemgmt()
media = client.media()
ptz = client.ptz()

# The custom WSDL directory should have a flat structure:
# /path/to/custom/wsdl/
# ├── devicemgmt.wsdl
# ├── media.wsdl
# ├── ptz.wsdl
# ├── imaging.wsdl
# └── ... (other WSDL files)

Production Configuration

from onvif import ONVIFClient, CacheMode

# Recommended production settings
client = ONVIFClient(
    host="your-cctv-node.viewplexus.com",
    port=443,
    username="admin",
    password="@secure_password88",
    http_digest=True,           # Use HTTP Digest authentiation
    timeout=15,
    cache=CacheMode.DB,         # Maximum performance (default)
    use_https=True,             # Secure communication
    verify_ssl=True,            # Verify certificates
    apply_patch=True,           # Enhanced parsing (default)
    capture_xml=False,          # Disable debug mode (default)
    wsdl_dir=None               # Use built-in WSDL files (default)
)

This library uses WS-Security UsernameToken authentication by default, which is the standard for ONVIF devices.

You can also use HTTP Digest for authentication with http_digest=True in ONVIFClient constructor, this parameter available since v0.3.0. ↩
The apply_patch=True (default) enables custom zeep patching that improves xsd:any field parsing. This is recommended for better compatibility with ONVIF responses. ↩
Only use capture_xml=True during development/debugging as it increases memory usage and may expose sensitive data in logs. ↩
Use wsdl_dir parameter to specify a custom directory containing WSDL files.

The directory should have a flat structure with WSDL files directly in the root (e.g., /path/to/custom/wsdl/devicemgmt.wsdl, /path/to/custom/wsdl/media.wsdl, etc.). ↩
The plugins parameter accepts a list of user-provided Zeep Plugin instances that can intercept and inspect SOAP messages before they are sent or after they are received.

This can be used to implement custom request/response processing, logging, XML manipulation, or other integrations with Zeep's SOAP transport. The plugins are applied to the underlying Zeep clients created by ONVIFClient. ↩
Disk cache CacheMode.DB is stored in ~/.onvif-python/onvif_zeep_cache.sqlite. ↩
Fast after the cache is populated. The first startup may still need to download and parse the WSDL/XSD documents. ↩↩↩