SSDP - Simple Service Discovery Protocol

What is SSDP?

SSDP (Simple Service Discovery Protocol) is a network protocol used to discover devices and services on a local network without manual configuration. It is part of the UPnP (Universal Plug and Play) suite and operates over UDP.

Why is SSDP useful?

  • Automatically detects smart TVs, printers, routers, and media servers

  • Simplifies setup by removing the need for manual IP configuration

  • Enables plug-and-play features in home and office networks

How it works

  • Device joins network – Connects to local network (e.g., Smart TV)

  • Sends SSDP advertisement – Broadcasts “I’m here” with available services

  • Control point (client) listens – Phones, PCs, or apps listen for these messages

  • Client sends M-SEARCH request – A device can actively search for services

  • Device responds – Matching devices reply with service details (IP, port, URL)

  • Client connects – Uses the info to interact (e.g., stream content)

Where is SSDP used?

  • Smart home environments

  • Media streaming setups

  • Networked printers

  • Home routers and gateways

Which OSI layer does this protocol belong to?

  • Application Layer (Layer 7)

  • SSDP is used for device/service discovery, a high-level application function

  • It operates over UDP but enables applications to discover peers/services

  • Typically uses UDP port 1900 and IP multicast

What are common devices using SSDP?

  • Smart TVs and media players

  • IoT devices (e.g., smart plugs, speakers)

  • Network printers

  • Home routers with UPnP enabled

What are alternatives to SSDP?

  • mDNS/Bonjour – Used by Apple and Zeroconf environments

  • WS-Discovery – Used by Microsoft systems

  • Zeroconf/Avahi – For Linux and cross-platform auto-discovery

What is USN in SSDP?

  • USN (Unique Service Name) is a string that uniquely identifies a device or service

  • Format: uuid:<device-uuid>::urn:schemas-upnp-org:service:<service-name>

What can we learn from SSDP messages?

  • Device type (e.g., MediaServer, rootdevice)

  • Software/firmware info via SERVER field

  • Device IP address via LOCATION header

  • Join/leave status via NTS

  • Unique identity via USN, UUID

Does SSDP support IPv4 or IPv6?

  • SSDP supports both IPv4 and IPv6

  • IPv4 uses multicast to 239.255.255.250:1900

  • IPv6 uses FF02::C (but not all devices support IPv6 discovery)

Is SSDP suitable for real-time applications?

No, SSDP is designed only for device and service discovery. It is not intended for real-time communication, such as video, voice, or large data transfers.

Topics in this section,

  • In this section, you are going to learn

  • Terminology

  • Version Info

S.No

Version

RFC

Year

contribution/core ideas

1

1

draft-cai-ssdp-v1-00

1999

Initial draft introducing SSDP for discovering network services using multicast and HTTPU.

2

1

draft-cai-ssdp-v1-01

1999

Refinements to message formats and

headers; introduced OPTIONS and

ANNOUNCE methods.

3

1

draft-cai-ssdp-v1-02

1999

Added SUBSCRIBE method; aligned with

GENA.

4

1

draft-cai-ssdp-v1-03

1999

Final draft with clarified message flows,

caching model, and multicast discovery

behavior

  • setup

  • setup

SSDP START LINE Packet

S.No

Packet Components

Description

Size(Bytes)

1

Start Line

First line of the SSDP message, similar to HTTP. Indicates the method and protocol.

2040

Method

M-SEARCH * HTTP/1.1 or NOTIFY * HTTP/1.1

SSDP HEADERS Packet

2

Headers

Key-value pairs that define the SSDP message metadata and instructions.

150400

HOST

Multicast address and port (239.255.255.250:1900)

25

MAN

Method type (“ssdp:discover”), only in M-SEARCH

25

MX

Maximum wait time for response, only in M-SEARCH

10

ST

Search Target type of device/service (M-SEARCH)

30100

NT

Notification Type type of device/service (NOTIFY)

30100

NTS

Notification Sub Type (ssdp:alive, ssdp:byebye) (NOTIFY)

20

USN

Unique Service Name identifies the device/service

50150

LOCATION

URL to device description document (NOTIFY)

50150

CACHE-CONTROL

Validity duration of advertisement (NOTIFY)

20

SERVER

OS and UPnP version info (NOTIFY)

30100

SSDP BLANK LINE Packet

3

Blank Line

Marks the end of the header section (rn)

2

SSDP PAYLOAD(optional) Packet

4

Payload (optional)

Rarely used in SSDP; typically empty

0

S.No

Use Case

Description

1

Device Discovery

Automatically finds UPnP-enabled devices on a local network without manual configuration.

2

Media Streaming

Enables media servers to advertise themselves to clients.

3

Smart Home Integration

Allows smart home hubs to discover and interact with IoT devices like lights, thermostats, and cameras.

4

Plug and Play Networking

Helps new devices join a network and announce their capabilities without user intervention.

5

Service Advertisement

Devices use SSDP to broadcast available services to other devices.

6

Network Configuration Tools

Used by network management tools to detect and list all UPnP-compatible devices on the network.

7

Gaming Consoles

Consoles like Xbox and PlayStation use SSDP to discover media servers and other compatible devices.

8

VoIP and IP Cameras

Helps VoIP phones and IP cameras register themselves on the network for easy access and configuration.

S.No

SSDP features

Description

1

Discovery Protocol

Enables automatic discovery of UPnP devices and services on a local network.

2

Uses UDP Multicast

Operates over UDP using multicast address 239.255.255.250:1900 for communication.

3

HTTP-like Messaging

Uses HTTP-style request and response messages (e.g., M-SEARCH, NOTIFY).

4

Zero Configuration

No manual setup required; devices can join and advertise themselves automatically.

5

Supports Both Search and Advertisement

Clients can search for services (M-SEARCH) and devices can advertise (NOTIFY).

6

Lightweight Protocol

Minimal overhead, making it suitable for embedded and IoT devices.

7

Time-to-Live (TTL) Control

Advertisements include a CACHE-CONTROL header to define how long they are valid.

8

Extensible

Can be extended to support custom device types and services.

9

Part of UPnP Stack

SSDP is the discovery layer of the Universal Plug and Play architecture.

10

Cross-Platform Support

Supported by many operating systems and networked devices.

Discovery Protocol - Testcases

S.No

Test Case

Description

Expected Result

1

SSDP Discovery Request

Send M-SEARCH request

Devices respond with NOTIFY

2

SSDP Response Format

Validate response format

Response includes required headers

3

SSDP Multicast Address

Send request to 239.255.255.250

Devices receive and respond

4

SSDP Port Usage

Use port 1900

Communication succeeds

5

SSDP TTL Configuration

Set TTL for multicast

Message reaches correct scope

6

SSDP Device Advertisement

Device sends NOTIFY

Advertisement received by clients

7

SSDP Service Type Match

Search for specific service type

Matching devices respond

8

SSDP Search Timeout

Set timeout for M-SEARCH

Responses received within time

9

SSDP Search Interval

Send repeated M-SEARCH

Responses received periodically

10

SSDP Response Delay

Measure response time

Within acceptable limits

11

SSDP Header Validation

Check headers like ST, USN, LOCATION

All required headers present

12

SSDP LOCATION URL Validity

Validate LOCATION URL

URL is reachable

13

SSDP USN Format

Validate Unique Service Name

Format matches specification

14

SSDP ST Header Matching

Match Search Target

Correct services respond

15

SSDP Version Compatibility

Test with SSDP v1.0

Protocol functions correctly

16

SSDP IPv6 Support

Send SSDP over IPv6

Devices respond correctly

17

SSDP IPv4 Support

Send SSDP over IPv4

Devices respond correctly

18

SSDP Device Removal

Device sends BYE-BYE NOTIFY

Clients remove device from list

19

SSDP Device Re-Announcement

Device re-announces presence

Clients update device list

20

SSDP Duplicate Response Handling

Handle multiple responses

No duplication in client list

21

SSDP Response Filtering

Filter responses by ST

Only matching services listed

22

SSDP Response Parsing

Parse SSDP response correctly

Data extracted accurately

23

SSDP Response Logging

Log all SSDP responses

Logs contain complete entries

24

SSDP Response Security

Validate response source

Only trusted sources accepted

25

SSDP Response Spoofing

Simulate spoofed response

Client detects and ignores

26

SSDP Response Rate Limiting

Limit response rate

No flooding occurs

27

SSDP Response Retry

Retry on no response

Retry succeeds

28

SSDP Response Aggregation

Aggregate multiple responses

All services listed correctly

29

SSDP Response to Invalid Request

Send malformed M-SEARCH

No response or error returned

30

SSDP Response to Unknown ST

Use unknown service type

No response expected

31

SSDP Response to Broadcast

Send broadcast instead of multicast

Devices may not respond

32

SSDP Response to Unicast

Send unicast M-SEARCH

Targeted device responds

33

SSDP Response to Wrong Port

Send to incorrect port

No response received

34

SSDP Response with Large Payload

Send large response

Client handles correctly

35

SSDP Response with Missing Headers

Omit required headers

Client rejects response

36

SSDP Response with Extra Headers

Add custom headers

Client ignores or logs them

37

SSDP Response with Invalid LOCATION

LOCATION URL unreachable

Client logs error

38

SSDP Response with Invalid USN

Malformed USN

Client ignores response

39

SSDP Response with Invalid ST

Malformed ST

Client ignores response

40

SSDP Response with Invalid Date

Incorrect DATE header

Client logs warning

41

SSDP Response with Invalid Cache-Control

Malformed cache header

Client ignores or logs

42

SSDP Response with Invalid Server Header

Malformed SERVER header

Client logs warning

43

SSDP Response with Invalid NT Header

Malformed NT header

Client ignores response

44

SSDP Response with Invalid NTS Header

Malformed NTS header

Client ignores response

45

SSDP Response with Invalid Host Header

Wrong HOST value

Client ignores response

46

SSDP Response with Invalid MAN Header

Wrong MAN value

Client ignores response

47

SSDP Response with Invalid MX Header

Wrong MX value

Client logs warning

48

SSDP Response with Invalid Content-Length

Incorrect length

Client logs error

49

SSDP Response with Invalid Protocol Version

Wrong version

Client ignores response

50

SSDP Response with Invalid CRLF

Malformed line endings

Client rejects response

Uses UDP Multicast - Testcases

S.No

Test Case

Description

Expected Result

1

Multicast Address Usage

Send SSDP to 239.255.255.250

Message received by all devices

2

Multicast Port Usage

Use port 1900 for SSDP

Devices respond correctly

3

Multicast Packet Format

Validate SSDP packet format

Packet conforms to SSDP spec

4

Multicast TTL Setting

Set TTL to 2

Packet reaches local subnet

5

Multicast Packet Delivery

Send M-SEARCH via multicast

Devices respond with NOTIFY

6

Multicast Packet Reception

Listen on multicast address

Device receives SSDP messages

7

Multicast Group Join

Device joins multicast group

Device receives SSDP traffic

8

Multicast Group Leave

Device leaves group

No longer receives SSDP traffic

9

Multicast Packet Logging

Log incoming multicast packets

Logs show correct entries

10

Multicast Packet Filtering

Filter SSDP packets by ST

Only relevant packets processed

11

Multicast Packet Parsing

Parse SSDP headers

All fields extracted correctly

12

Multicast Packet Size Limit

Send large SSDP packet

Packet within UDP limits

13

Multicast Packet Retry

Retry on packet loss

Message resent successfully

14

Multicast Packet Loss Simulation

Simulate packet loss

Device retries or logs error

15

Multicast Packet Duplication

Handle duplicate packets

Device ignores duplicates

16

Multicast Packet Timing

Measure response time

Within expected range

17

Multicast Packet Collision

Simulate multiple sends

No data corruption occurs

18

Multicast Packet Rate Limiting

Limit SSDP send rate

No flooding occurs

19

Multicast Packet Security

Validate source IP

Only trusted sources accepted

20

Multicast Packet Spoofing

Simulate spoofed packet

Device detects and ignores

21

Multicast Packet with Invalid Headers

Send malformed headers

Device ignores packet

22

Multicast Packet with Extra Headers

Add custom headers

Device ignores or logs them

23

Multicast Packet with Missing Headers

Omit required headers

Device rejects packet

24

Multicast Packet with Invalid ST

Use unknown service type

No response expected

25

Multicast Packet with Valid ST

Use known service type

Devices respond correctly

26

Multicast Packet with Valid MX

Set MX value

Responses delayed accordingly

27

Multicast Packet with Invalid MX

Use invalid MX value

Device logs warning

28

Multicast Packet with Valid MAN

Use correct MAN header

Device responds correctly

29

Multicast Packet with Invalid MAN

Use incorrect MAN header

Device ignores packet

30

Multicast Packet with Valid HOST

Use correct HOST header

Device responds correctly

31

Multicast Packet with Invalid HOST

Use incorrect HOST header

Device ignores packet

32

Multicast Packet with Valid NTS

Use correct NTS header

Device processes correctly

33

Multicast Packet with Invalid NTS

Use incorrect NTS header

Device ignores packet

34

Multicast Packet with Valid NT

Use correct NT header

Device responds correctly

35

Multicast Packet with Invalid NT

Use incorrect NT header

Device ignores packet

36

Multicast Packet with Valid USN

Use correct USN format

Device identifies service

37

Multicast Packet with Invalid USN

Use malformed USN

Device ignores packet

38

Multicast Packet with Valid LOCATION

Use reachable LOCATION URL

Client accesses service description

39

Multicast Packet with Invalid LOCATION

Use unreachable LOCATION

Client logs error

40

Multicast Packet with Valid SERVER

Use correct SERVER header

Device identifies sender

41

Multicast Packet with Invalid SERVER

Use malformed SERVER header

Device logs warning

42

Multicast Packet with Valid CACHE-CONTROL

Use correct cache header

Device respects expiration

43

Multicast Packet with Invalid CACHE-CONTROL

Use malformed cache header

Device logs warning

44

Multicast Packet with Valid DATE

Use correct DATE header

Device logs timestamp

45

Multicast Packet with Invalid DATE

Use malformed DATE header

Device logs warning

46

Multicast Packet with CRLF Termination

Use correct line endings

Packet parsed correctly

47

Multicast Packet with Invalid CRLF

Use incorrect line endings

Device rejects packet

48

Multicast Packet with Valid Content-Length

Use correct length

Packet processed correctly

49

Multicast Packet with Invalid Content-Length

Use incorrect length

Device logs error

50

Multicast Packet with Protocol Version

Use SSDP/1.0

Device accepts packet

HTTP Like Messaging - Testcases

S.No

Test Case

Description

Expected Result

1

Valid M-SEARCH Request

Send correctly formatted M-SEARCH

Devices respond with NOTIFY

2

Valid NOTIFY Message

Device sends valid NOTIFY

Clients receive and parse message

3

HTTP Version Format

Use SSDP/1.0 in request line

Message accepted

4

Request Line Format

Use correct method and URI

Message parsed successfully

5

Header Field Format

Use colon-separated headers

Headers parsed correctly

6

CRLF Line Endings

Use proper CRLF endings

Message parsed correctly

7

Missing CRLF

Omit CRLF between headers

Message rejected or ignored

8

Extra CRLF

Add extra CRLF between headers

Message still parsed correctly

9

Invalid Method

Use unsupported method

Message ignored

10

Valid HOST Header

Include correct HOST value

Message accepted

11

Invalid HOST Header

Use incorrect HOST value

Message ignored

12

Valid MAN Header

Include “ssdp:discover”

Message accepted

13

Invalid MAN Header

Use incorrect MAN value

Message ignored

14

Valid MX Header

Set MX to integer value

Message accepted

15

Invalid MX Header

Use non-integer MX

Message ignored

16

Valid ST Header

Use known service type

Devices respond correctly

17

Invalid ST Header

Use unknown service type

No response expected

18

Valid NT Header

Use correct notification type

Message accepted

19

Invalid NT Header

Use malformed NT value

Message ignored

20

Valid NTS Header

Use “ssdp:alive” or “ssdp:byebye”

Message accepted

21

Invalid NTS Header

Use unsupported NTS value

Message ignored

22

Valid USN Header

Use correct Unique Service Name

Message accepted

23

Invalid USN Header

Use malformed USN

Message ignored

24

Valid LOCATION Header

Provide reachable URL

Client accesses service description

25

Invalid LOCATION Header

Provide unreachable URL

Client logs error

26

Valid CACHE-CONTROL Header

Use “max-age” directive

Message cached appropriately

27

Invalid CACHE-CONTROL Header

Use malformed directive

Message ignored or logged

28

Valid SERVER Header

Include device info

Message accepted

29

Invalid SERVER Header

Use malformed SERVER value

Message logged with warning

30

Valid DATE Header

Include correct date format

Message accepted

31

Invalid DATE Header

Use incorrect format

Message logged with warning

32

Header Case Sensitivity

Use mixed-case headers

Message parsed correctly

33

Header Order Flexibility

Change header order

Message parsed correctly

34

Duplicate Headers

Repeat headers like ST

Message parsed or logged as duplicate

35

Missing Required Headers

Omit ST or MAN

Message ignored

36

Extra Headers

Add custom headers

Message accepted or ignored safely

37

Header Length Limit

Use long header values

Message accepted if within limits

38

Message Size Limit

Send large SSDP message

Message accepted if within UDP limits

39

Message Fragmentation

Fragment message across packets

Message rejected (UDP does not support fragmentation)

40

Message Encoding

Use UTF-8 encoding

Message parsed correctly

41

Invalid Encoding

Use unsupported encoding

Message ignored

42

Message Logging

Log received SSDP messages

Logs contain full HTTP-like structure

43

Message Parsing

Parse headers and values

All fields extracted correctly

44

Message Validation

Validate message structure

Message accepted or rejected accordingly

45

Message Replay

Replay valid message

Devices respond again

46

Message Spoofing

Send spoofed message

Client detects and ignores

47

Message Rate Limiting

Send messages rapidly

Server throttles or ignores excess

48

Message with Comments

Include comments in headers

Message parsed correctly or ignored

49

Message with Line Continuation

Use folded headers

Message parsed correctly

50

Message with Invalid Protocol Version

Use SSDP/2.0

Message rejected or ignored

Zero Configuration - Testcases

S.No

Test Case

Description

Expected Result

1

SSDP Discovery Broadcast

Verify device sends SSDP discovery messages

SSDP M-SEARCH sent to 239.255.255.250:1900

2

SSDP Response to Discovery

Verify device responds to SSDP discovery requests

Valid SSDP response with required headers

3

SSDP Advertisement Notification

Check device sends NOTIFY messages

NOTIFY messages with correct service type and location

4

SSDP Message Format

Validate SSDP message structure

Messages conform to UPnP SSDP format

5

SSDP TTL Value

Check default TTL value in SSDP messages

TTL is set to 4

6

SSDP Multicast Address

Verify correct multicast address usage

Messages sent to 239.255.255.250

7

SSDP Port Usage

Validate SSDP uses port 1900

SSDP messages use UDP port 1900

8

SSDP Header Validation

Check presence of required headers

Headers like HOST, MAN, ST, MX, LOCATION are present

9

SSDP Retry Mechanism

Test retry behavior when no response received

Retries occur within defined interval

10

SSDP Shutdown Notification

Verify ssdp:byebye message on shutdown

Device sends NOTIFY with NTS: ssdp:byebye

11

SSDP Service Type Advertisement

Validate advertised service types

Correct NT and USN values in NOTIFY

12

SSDP Location URL

Check validity of LOCATION URL

URL points to accessible XML description

13

SSDP XML Description

Validate XML content at LOCATION

XML contains valid UPnP device/service description

14

SSDP Response Timing

Measure response time to M-SEARCH

Response within MX value range

15

SSDP Multiple Device Discovery

Discover multiple devices on network

All devices respond and are listed

16

SSDP Advertisement Frequency

Check frequency of NOTIFY messages

Matches CACHE-CONTROL header

17

SSDP Unicast Response

Verify unicast response to M-SEARCH

Response sent to requesters IP and port

18

SSDP Interface Binding

Test SSDP on multiple network interfaces

SSDP messages sent on all active interfaces

19

SSDP IPv6 Support

Verify SSDP over IPv6

SSDP messages sent and received over IPv6

20

SSDP IPv4 Support

Verify SSDP over IPv4

SSDP messages sent and received over IPv4

21

SSDP Packet Size

Check SSDP message size

Packet size < 1 KB

22

SSDP CPU Usage

Measure CPU usage during SSDP operation

CPU usage remains low

23

SSDP Memory Usage

Measure memory footprint of SSDP

Memory usage is minimal

24

SSDP on Reboot

Verify SSDP reinitializes after reboot

SSDP resumes discovery and advertisement

25

SSDP on Network Change

Test SSDP behavior on network switch

SSDP rebinds and resumes operation

26

SSDP on Wi-Fi

Verify SSDP over Wi-Fi

SSDP messages sent and received

27

SSDP on Ethernet

Verify SSDP over Ethernet

SSDP messages sent and received

28

SSDP on Mobile Network

Test SSDP on mobile hotspot

SSDP functions correctly

29

SSDP on VPN

Test SSDP behavior over VPN

SSDP messages may be blocked or rerouted

30

SSDP Firewall Handling

Check SSDP behavior with firewall enabled

SSDP messages blocked or allowed based on rules

31

SSDP NAT Traversal

Test SSDP across NAT

SSDP may not traverse NAT

32

SSDP Service Removal

Verify service removal notification

Device sends ssdp:byebye for removed service

33

SSDP Service Update

Test update of advertised service

Device sends updated NOTIFY message

34

SSDP Logging

Check SSDP logs for discovery and advertisement

Logs contain SSDP activity

35

SSDP Error Handling

Validate error handling for malformed messages

Errors logged, malformed messages ignored

36

SSDP Compatibility with UPnP

Verify SSDP integration with UPnP stack

SSDP enables UPnP device discovery

37

SSDP Compatibility with DLNA

Test SSDP with DLNA devices

DLNA devices discovered via SSDP

38

SSDP Compatibility with IoT Devices

Verify SSDP on IoT platforms

SSDP functions on embedded systems

39

SSDP Custom Service Type Support

Advertise custom service types

SSDP messages include custom NT and USN

40

SSDP Message Parsing

Validate SSDP message parsing

Messages parsed correctly

41

SSDP Message Filtering

Test filtering of SSDP messages

Only relevant messages processed

42

SSDP Message Duplication

Check for duplicate SSDP messages

Duplicates handled gracefully

43

SSDP Message Loss

Test behavior under packet loss

SSDP retries or logs failure

44

SSDP Multicast Join/Leave

Verify multicast group join and leave

Device joins/leaves 239.255.255.250 group

45

SSDP Service Discovery Accuracy

Validate discovered services

Matches advertised services

46

SSDP Service Discovery Latency

Measure latency of service discovery

Discovery occurs within MX timeout

47

SSDP XML Schema Validation

Validate XML schema of service description

XML conforms to UPnP schema

48

SSDP Cache-Control Header

Check CACHE-CONTROL header value

Header defines advertisement interval

49

SSDP ST Header Matching

Verify ST header matches advertised services

ST in M-SEARCH matches NT in NOTIFY

50

SSDP USN Header Uniqueness

Check uniqueness of USN header

Each service has a unique USN

Supports Both Search And Advertisement - Testcases

S.No

Test Case

Description

Expected Result

1

SSDP Search Request Broadcast

Verify device sends M-SEARCH messages

M-SEARCH sent to 239.255.255.250:1900

2

SSDP Search Response Handling

Validate response to M-SEARCH

Device sends valid SSDP response

3

SSDP Advertisement Notification

Check device sends NOTIFY messages

NOTIFY messages with correct headers

4

SSDP Dual Role Operation

Verify device acts as both client and server

Device sends and responds to SSDP messages

5

SSDP Service Discovery Accuracy

Validate discovered services match advertised ones

Discovered services match advertised metadata

6

SSDP Search and Advertisement Coexistence

Ensure both features operate simultaneously

No conflict between search and advertisement

7

SSDP Search Frequency

Check frequency of M-SEARCH messages

Matches configured interval

8

SSDP Advertisement Frequency

Check frequency of NOTIFY messages

Matches CACHE-CONTROL header

9

SSDP Search Target Matching

Validate ST header matches advertised NT

Correct service types discovered

10

SSDP USN Header Consistency

Check USN consistency across search and advertisement

Same USN used in both NOTIFY and response

11

SSDP Location URL

Validate LOCATION URL in both message types

URL points to valid XML description

12

SSDP XML Description Retrieval

Retrieve and validate XML from LOCATION

XML contains valid UPnP description

13

SSDP TTL Value

Check TTL value in both message types

TTL is set to 4

14

SSDP Multicast Address

Validate multicast address usage

Messages sent to 239.255.255.250

15

SSDP Port Usage

Check port 1900 usage

SSDP messages use UDP port 1900

16

SSDP Header Validation

Validate headers in both message types

Required headers present (HOST, MAN, ST, NT, etc.)

17

SSDP Retry Mechanism

Test retry behavior for search and advertisement

Retries occur within defined interval

18

SSDP Shutdown Notification

Verify ssdp:byebye message on shutdown

Device sends NOTIFY with NTS: ssdp:byebye

19

SSDP Interface Binding

Test SSDP on multiple network interfaces

Messages sent on all active interfaces

20

SSDP IPv6 Support

Verify SSDP over IPv6

SSDP messages sent and received over IPv6

21

SSDP IPv4 Support

Verify SSDP over IPv4

SSDP messages sent and received over IPv4

22

SSDP Packet Size

Check message size for both types

Packet size < 1 KB

23

SSDP CPU Usage

Measure CPU usage during dual operation

CPU usage remains low

24

SSDP Memory Usage

Measure memory footprint

Memory usage is minimal

25

SSDP on Reboot

Verify SSDP resumes after reboot

SSDP resumes search and advertisement

26

SSDP on Network Change

Test SSDP behavior on network switch

SSDP rebinds and resumes operation

27

SSDP on Wi-Fi

Verify SSDP over Wi-Fi

SSDP messages sent and received

28

SSDP on Ethernet

Verify SSDP over Ethernet

SSDP messages sent and received

29

SSDP on Mobile Network

Test SSDP on mobile hotspot

SSDP functions correctly

30

SSDP on VPN

Test SSDP behavior over VPN

SSDP messages may be blocked or rerouted

31

SSDP Firewall Handling

Check SSDP behavior with firewall enabled

SSDP messages blocked or allowed based on rules

32

SSDP NAT Traversal

Test SSDP across NAT

SSDP may not traverse NAT

33

SSDP Service Removal

Verify service removal notification

Device sends ssdp:byebye for removed service

34

SSDP Service Update

Test update of advertised service

Device sends updated NOTIFY message

35

SSDP Logging

Check SSDP logs for search and advertisement

Logs contain SSDP activity

36

SSDP Error Handling

Validate error handling for malformed messages

Errors logged, malformed messages ignored

37

SSDP Compatibility with UPnP

Verify SSDP integration with UPnP stack

SSDP enables UPnP device discovery

38

SSDP Compatibility with DLNA

Test SSDP with DLNA devices

DLNA devices discovered via SSDP

39

SSDP Compatibility with IoT Devices

Verify SSDP on IoT platforms

SSDP functions on embedded systems

40

SSDP Custom Service Type Support

Advertise and discover custom service types

SSDP messages include custom NT and USN

41

SSDP Message Parsing

Validate SSDP message parsing

Messages parsed correctly

42

SSDP Message Filtering

Test filtering of SSDP messages

Only relevant messages processed

43

SSDP Message Duplication

Check for duplicate SSDP messages

Duplicates handled gracefully

44

SSDP Message Loss

Test behavior under packet loss

SSDP retries or logs failure

45

SSDP Multicast Join/Leave

Verify multicast group join and leave

Device joins/leaves 239.255.255.250 group

46

SSDP Search Latency

Measure latency of service discovery

Discovery occurs within MX timeout

47

SSDP XML Schema Validation

Validate XML schema of service description

XML conforms to UPnP schema

48

SSDP Cache-Control Header

Check CACHE-CONTROL header value

Header defines advertisement interval

49

SSDP ST Header Matching

Verify ST header matches advertised services

ST in M-SEARCH matches NT in NOTIFY

50

SSDP USN Header Uniqueness

Check uniqueness of USN header

Each service has a unique USN

Lightweight Protocol - Testcases

S.No

Test Case

Description

Expected Result

1

SSDP Discovery

Send M-SEARCH to discover devices

Devices respond with NOTIFY

2

SSDP Alive Notification

Device sends NOTIFY alive message

Control point receives alive message

3

SSDP ByeBye Notification

Device sends NOTIFY byebye message

Control point removes device

4

SSDP Response Format

Validate SSDP response format

Response follows SSDP spec

5

SSDP Over UDP

Send SSDP over UDP

Message is received correctly

6

SSDP Port Check

Send on wrong port

No response received

7

SSDP TTL Expiry

Set TTL to 1

Message doesn’t cross subnet

8

SSDP Invalid Header

Send malformed header

Message is ignored

9

SSDP Missing ST Header

Omit ST header in M-SEARCH

No response received

10

SSDP Broadcast Range

Send to 239.255.255.250

Devices respond

11

SSDP Multicast Join

Device joins multicast group

Device receives M-SEARCH

12

SSDP Multicast Leave

Device leaves group

No longer receives M-SEARCH

13

SSDP Response Delay

Measure response time

Response within 1 second

14

SSDP Duplicate Response

Device sends duplicate responses

Control point handles gracefully

15

SSDP Device Type Filter

Search for specific device type

Only matching devices respond

16

SSDP Service Type Filter

Search for specific service type

Only matching services respond

17

SSDP Case Sensitivity

Use mixed-case headers

Protocol handles correctly

18

SSDP Header Order

Change header order

Response still valid

19

SSDP Large Payload

Send large SSDP message

Message is truncated or rejected

20

SSDP Invalid IP

Send to invalid IP

No response

21

SSDP Invalid Port

Send to invalid port

No response

22

SSDP Retry Mechanism

Retry on no response

Device responds on retry

23

SSDP Device Timeout

Device stops responding

Control point removes it

24

SSDP Network Loss

Disconnect network

Device disappears from discovery

25

SSDP Reconnect

Reconnect device

Device reappears

26

SSDP Multiple Devices

Multiple devices respond

All are discovered

27

SSDP Flooding

Send many M-SEARCH

Devices handle load

28

SSDP Rate Limiting

Exceed rate limit

Responses are throttled

29

SSDP Invalid Method

Use unsupported method

Message is ignored

30

SSDP IPv6 Support

Send over IPv6

Devices respond correctly

31

SSDP IPv4 Support

Send over IPv4

Devices respond correctly

32

SSDP Mixed Network

IPv4 and IPv6 devices

All respond appropriately

33

SSDP Device Reboot

Reboot device

Sends alive message again

34

SSDP Service Update

Change service info

Sends updated NOTIFY

35

SSDP Header Injection

Inject extra headers

Ignored or handled safely

36

SSDP Security Check

Send spoofed message

Ignored or flagged

37

SSDP Logging

Log SSDP messages

Logs are accurate

38

SSDP Packet Loss

Simulate packet loss

Retry or timeout occurs

39

SSDP Response Count

Count responses

Matches expected number

40

SSDP Response Parsing

Parse SSDP response

All fields extracted correctly

41

SSDP ST Wildcard

Use ST: ssdp:all

All devices respond

42

SSDP ST Specific

Use ST: upnp:rootdevice

Only root devices respond

43

SSDP MX Value

Set MX to 5

Responses delayed up to 5s

44

SSDP MX Zero

Set MX to 0

Immediate response

45

SSDP MX Invalid

Set MX to invalid value

Message ignored

46

SSDP Device UUID

Validate device UUID

Matches expected format

47

SSDP Service UUID

Validate service UUID

Matches expected format

48

SSDP Response to Unknown ST

Use unknown ST

No response

49

SSDP Response to Empty ST

Use empty ST

No response

50

SSDP Device Removal

Device sends byebye

Control point removes it

Time To Live Control - Testcases

S.No

Test Case

Description

Expected Result

1

TTL Default Value

Check default TTL value in SSDP packets

TTL is set to 4 (standard)

2

TTL = 1

Set TTL to 1

SSDP message does not cross subnet

3

TTL = 0

Set TTL to 0

SSDP message is dropped immediately

4

TTL = 255

Set TTL to max

SSDP message reaches all reachable devices

5

TTL Decrement

Observe TTL decrement across hops

TTL decreases by 1 per hop

6

TTL Expiry

TTL expires before reaching device

SSDP message is discarded

7

TTL Custom Value

Set TTL to custom value (e.g., 10)

Message reaches devices within 10 hops

8

TTL Logging

Log TTL value in received SSDP messages

TTL value is correctly logged

9

TTL Manipulation Detection

Detect abnormal TTL values

System flags suspicious TTL

10

TTL in Multicast

Send SSDP multicast with TTL = 2

Message reaches devices within 2 hops

11

TTL in Unicast

Send SSDP unicast with TTL = 2

Message reaches target device

12

TTL vs Response Time

Measure response time with varying TTL

Higher TTL may increase response time

13

TTL vs Network Load

Send SSDP with high TTL in busy network

Message may be delayed or dropped

14

TTL in IPv6

Set TTL in IPv6 SSDP message

Hop limit is respected

15

TTL in IPv4

Set TTL in IPv4 SSDP message

TTL is respected

16

TTL Reset on Reboot

Reboot device and check TTL

TTL resets to default

17

TTL in SSDP NOTIFY

Check TTL in NOTIFY messages

TTL is correctly set

18

TTL in SSDP M-SEARCH

Check TTL in M-SEARCH messages

TTL is correctly set

19

TTL in SSDP RESPONSE

Check TTL in RESPONSE messages

TTL is correctly set

20

TTL in SSDP BYEBYE

Check TTL in BYEBYE messages

TTL is correctly set

21

TTL in SSDP ALIVE

Check TTL in ALIVE messages

TTL is correctly set

22

TTL in SSDP Header

Validate TTL in packet header

TTL field is present and correct

23

TTL with VPN

Send SSDP through VPN with TTL = 1

Message does not reach remote device

24

TTL with Firewall

Send SSDP with TTL = 1 through firewall

Message may be blocked

25

TTL with NAT

Send SSDP with TTL = 1 through NAT

Message may not reach external device

26

TTL with Proxy

Send SSDP through proxy with TTL = 1

Message may be dropped

27

TTL with Mesh Network

Send SSDP in mesh with TTL = 3

Message reaches limited nodes

28

TTL with Broadcast

Send SSDP broadcast with TTL = 1

Message stays within local subnet

29

TTL with Multicast Routing

Check TTL effect on multicast routing

Routing respects TTL

30

TTL with SSDP Flood

Flood SSDP with TTL = 1

Network impact is minimal

31

TTL with SSDP Retry

Retry SSDP with increasing TTL

Message eventually reaches device

32

TTL with SSDP Delay

Measure delay with TTL = 5

Delay increases slightly

33

TTL with SSDP Drop

Drop SSDP if TTL < threshold

Message is discarded

34

TTL with SSDP Filter

Filter SSDP messages by TTL

Only messages with valid TTL processed

35

TTL with SSDP Monitor

Monitor TTL values in SSDP traffic

TTL values logged and analyzed

36

TTL with SSDP Analyzer

Analyze TTL impact on discovery

TTL affects reachability

37

TTL with SSDP Simulator

Simulate SSDP with TTL = 2

Message reaches 2-hop devices

38

TTL with SSDP Validator

Validate TTL in SSDP tool

TTL is within acceptable range

39

TTL with SSDP Debug

Debug SSDP TTL issues

TTL misconfigurations identified

40

TTL with SSDP Config

Configure TTL in SSDP settings

TTL is applied correctly

41

TTL with SSDP API

Set TTL via SSDP API

TTL is reflected in packets

42

TTL with SSDP CLI

Set TTL via command line

TTL is applied correctly

43

TTL with SSDP GUI

Set TTL via GUI

TTL is applied correctly

44

TTL with SSDP Policy

Apply TTL policy

Messages follow TTL rules

45

TTL with SSDP QoS

Check TTL impact on QoS

TTL affects priority routing

46

TTL with SSDP Security

TTL manipulation detection

Alerts on abnormal TTL

47

TTL with SSDP Compliance

Check TTL compliance

TTL follows protocol standards

48

TTL with SSDP Testbed

Use testbed to test TTL

TTL behavior observed

49

TTL with SSDP Benchmark

Benchmark SSDP with TTL = 4

Performance metrics collected

50

TTL with SSDP Audit

Audit SSDP TTL usage

TTL values documented

Extensible - Testcases

S.No

Test Case

Description

Expected Result

1

Custom Header Support

Add custom headers to SSDP messages

SSDP messages include and transmit custom headers

2

Vendor-Specific Extensions

Add vendor-specific fields

SSDP messages are parsed without error

3

Extended ST Field

Use extended ST values

Devices respond if supported

4

Extended USN Field

Add metadata to USN

SSDP messages remain valid

5

SSDP Plugin Integration

Integrate SSDP with plugin module

SSDP behavior is enhanced

6

SSDP API Extension

Extend SSDP API for new features

API handles new parameters

7

SSDP Protocol Versioning

Add version info to SSDP headers

SSDP messages are backward compatible

8

SSDP Custom MX Handling

Customize MX delay logic

Responses follow new logic

9

SSDP Custom Notification Types

Add new NOTIFY types

Control point handles them correctly

10

SSDP Extended Logging

Add detailed logging fields

Logs include extended info

11

SSDP Extended Discovery Filters

Add new filter criteria

Discovery respects new filters

12

SSDP Extended Device Types

Define new device types

SSDP discovery includes them

13

SSDP Extended Service Types

Define new service types

SSDP responses include them

14

SSDP Extended TTL Control

Add dynamic TTL logic

TTL adjusts based on context

15

SSDP Extended Retry Logic

Customize retry behavior

SSDP retries follow new rules

16

SSDP Extended Response Format

Add new fields to response

SSDP remains compliant and readable

17

SSDP Extended Multicast Groups

Use additional multicast addresses

SSDP messages reach new groups

18

SSDP Extended Security Tags

Add security metadata

SSDP messages are validated securely

19

SSDP Extended Device Metadata

Include extra device info

Control point parses extended metadata

20

SSDP Extended Service Metadata

Include extra service info

Control point parses extended metadata

21

SSDP Extended Error Handling

Add error codes to SSDP

Errors are logged and handled

22

SSDP Extended Eventing

Add event triggers to SSDP

SSDP messages initiate events

23

SSDP Extended Subscription Model

Add subscription logic

SSDP supports new model

24

SSDP Extended Notification Interval

Customize NOTIFY intervals

SSDP sends at new intervals

25

SSDP Extended Device Lifecycle

Add lifecycle states

SSDP messages reflect state changes

26

SSDP Extended Device Grouping

Group devices logically

SSDP messages include group info

27

SSDP Extended Service Prioritization

Prioritize services

SSDP responses reflect priority

28

SSDP Extended Device Roles

Define roles in SSDP

SSDP messages include role info

29

SSDP Extended Response Routing

Route responses differently

SSDP messages follow new routing logic

30

SSDP Extended Interface Binding

Bind SSDP to multiple interfaces

SSDP messages are sent on all interfaces

31

SSDP Extended Protocol Bridging

Bridge SSDP with other protocols

SSDP messages trigger external actions

32

SSDP Extended Device Discovery Scope

Define scope of discovery

SSDP messages respect scope

33

SSDP Extended Device Capabilities

Advertise capabilities

SSDP messages include capability info

34

SSDP Extended Service Dependencies

Define service dependencies

SSDP messages reflect relationships

35

SSDP Extended Device Hierarchy

Define parent-child relationships

SSDP messages reflect hierarchy

36

SSDP Extended Device Tags

Add tags to devices

SSDP messages include tag metadata

37

SSDP Extended Service Tags

Add tags to services

SSDP messages include tag metadata

38

SSDP Extended Message Encryption

Encrypt SSDP payload

SSDP messages are secure

39

SSDP Extended Message Signing

Sign SSDP messages

SSDP messages are verifiable

40

SSDP Extended Message Compression

Compress SSDP payload

SSDP messages are smaller

41

SSDP Extended Message Fragmentation

Fragment large SSDP messages

SSDP messages are reassembled correctly

42

SSDP Extended Device Localization

Add language/localization info

SSDP messages reflect locale

43

SSDP Extended Device Timezone

Include timezone info

SSDP messages reflect device time

44

SSDP Extended Device Status

Include status info

SSDP messages reflect current state

45

SSDP Extended Device Health

Include health metrics

SSDP messages include health data

46

SSDP Extended Device Update Info

Include firmware update info

SSDP messages reflect update status

47

SSDP Extended Device Access Control

Include access control metadata

SSDP messages enforce permissions

48

SSDP Extended Device Audit Trail

Include audit info

SSDP messages are traceable

49

SSDP Extended Device Analytics

Include analytics metadata

SSDP messages support monitoring

50

SSDP Extensibility Compliance

Validate extended SSDP against spec

SSDP remains compliant and interoperable

Part Of UPNP Stack - Testcases

S.No

Test Case

Description

Expected Result

1

UPnP Stack Initialization

Start UPnP stack with SSDP

SSDP service starts successfully

2

SSDP Service Registration

Register SSDP in UPnP stack

SSDP is listed as active

3

SSDP Discovery Trigger

Trigger discovery from UPnP

SSDP sends M-SEARCH

4

SSDP Response Handling

UPnP stack receives SSDP response

Response is parsed and stored

5

SSDP NOTIFY Integration

UPnP sends NOTIFY via SSDP

NOTIFY is broadcast correctly

6

SSDP BYEBYE Integration

UPnP sends BYEBYE via SSDP

Device is removed from registry

7

SSDP Alive Integration

UPnP sends ALIVE via SSDP

Device appears in control point

8

SSDP Device Description Fetch

Fetch device description via SSDP

URL is retrieved and parsed

9

SSDP Service Description Fetch

Fetch service description via SSDP

URL is retrieved and parsed

10

SSDP Root Device Discovery

Discover root device via SSDP

Root device responds

11

SSDP Embedded Device Discovery

Discover embedded device

Embedded device responds

12

SSDP Service Discovery

Discover service via SSDP

Matching service responds

13

SSDP Device UUID Match

Match UUID in SSDP and UPnP

UUIDs are consistent

14

SSDP ST Header Mapping

Map ST header to UPnP device type

Correct mapping is verified

15

SSDP USN Header Mapping

Map USN to UPnP unique ID

USN is parsed and matched

16

SSDP MX Header Handling

UPnP handles MX delay

Responses are delayed appropriately

17

SSDP Device Expiry

Device expires in UPnP registry

SSDP BYEBYE or timeout triggers removal

18

SSDP Re-Announcement

Device re-announces via SSDP

UPnP updates registry

19

SSDP Stack Shutdown

Shutdown UPnP stack

SSDP sends BYEBYE

20

SSDP Stack Restart

Restart UPnP stack

SSDP sends ALIVE

21

SSDP Stack Error Handling

SSDP fails to start

Error is logged in UPnP stack

22

SSDP Stack Recovery

Recover SSDP after failure

SSDP resumes normal operation

23

SSDP Stack Logging

Log SSDP activity in UPnP

Logs contain SSDP events

24

SSDP Stack Debugging

Enable debug mode

SSDP messages are detailed

25

SSDP Stack Configuration

Configure SSDP via UPnP settings

Changes are reflected in SSDP

26

SSDP Stack Multicast Join

Join multicast group

SSDP receives M-SEARCH

27

SSDP Stack Multicast Leave

Leave multicast group

SSDP stops receiving messages

28

SSDP Stack Interface Binding

Bind SSDP to specific interface

SSDP listens only on that interface

29

SSDP Stack IPv4 Support

Use IPv4 in UPnP stack

SSDP works over IPv4

30

SSDP Stack IPv6 Support

Use IPv6 in UPnP stack

SSDP works over IPv6

31

SSDP Stack Mixed Mode

Use both IPv4 and IPv6

SSDP handles both correctly

32

SSDP Stack Device Count

Count devices discovered

Matches SSDP responses

33

SSDP Stack Device Removal

Remove device from UPnP

SSDP BYEBYE is sent

34

SSDP Stack Device Addition

Add new device

SSDP ALIVE is sent

35

SSDP Stack Service Update

Update service info

SSDP NOTIFY is updated

36

SSDP Stack Device Reboot

Reboot device

SSDP re-announces presence

37

SSDP Stack Service Restart

Restart service

SSDP NOTIFY is re-sent

38

SSDP Stack Device Conflict

Two devices with same UUID

UPnP handles conflict

39

SSDP Stack Device Priority

Prioritize devices

SSDP order is respected

40

SSDP Stack Device Filtering

Filter devices by type

Only matching SSDP responses processed

41

SSDP Stack Service Filtering

Filter services by type

Only matching services processed

42

SSDP Stack Notification Interval

Set NOTIFY interval

SSDP sends at correct interval

43

SSDP Stack Retry Mechanism

Retry on failed discovery

SSDP retries M-SEARCH

44

SSDP Stack Timeout Handling

Handle timeout in discovery

SSDP retries or logs error

45

SSDP Stack Compliance Check

Validate SSDP compliance

SSDP follows UPnP spec

46

SSDP Stack Security Check

Validate SSDP security

No spoofed messages accepted

47

SSDP Stack Performance

Measure SSDP performance

Meets timing and load requirements

48

SSDP Stack Stress Test

Flood with SSDP messages

Stack remains stable

49

SSDP Stack Interoperability

Test with other UPnP stacks

SSDP messages are compatible

50

SSDP Stack Certification

Run certification suite

SSDP passes all UPnP tests

Cross Platform - Testcases

S.No

Test Case

Description

Expected Result

1

SSDP on Windows

Run SSDP on Windows OS

SSDP messages sent and received correctly

2

SSDP on Linux

Run SSDP on Linux OS

SSDP functions as expected

3

SSDP on macOS

Run SSDP on macOS

SSDP discovery and response work

4

SSDP on Android

Run SSDP on Android device

SSDP messages are handled correctly

5

SSDP on iOS

Run SSDP on iOS device

SSDP discovery and notifications work

6

SSDP on Embedded Linux

Run SSDP on embedded system

SSDP operates within resource limits

7

SSDP on Windows Subsystem for Linux

Run SSDP in WSL

SSDP messages are correctly routed

8

SSDP on Docker Container

Run SSDP inside container

SSDP multicast works across bridge network

9

SSDP on Virtual Machine

Run SSDP in VM

SSDP messages are received via virtual NIC

10

SSDP on Raspberry Pi

Run SSDP on Raspberry Pi

SSDP discovery and response work

11

SSDP on Smart TV

Run SSDP on smart TV OS

SSDP messages are correctly handled

12

SSDP on NAS Device

Run SSDP on network storage

SSDP announces services correctly

13

SSDP on IoT Device

Run SSDP on IoT firmware

SSDP messages are sent and received

14

SSDP on Windows Firewall

SSDP with firewall enabled

SSDP messages are allowed or blocked per rules

15

SSDP on Linux iptables

SSDP with iptables rules

SSDP multicast is permitted

16

SSDP on macOS Firewall

SSDP with macOS firewall

SSDP messages are allowed

17

SSDP on Android Network Stack

SSDP on mobile data/Wi-Fi

SSDP works across interfaces

18

SSDP on iOS Background Mode

SSDP in background mode

SSDP continues to function

19

SSDP on Dual Boot System

SSDP across OS boots

SSDP works consistently

20

SSDP on Cross-Architecture

SSDP on ARM vs x86

SSDP behavior is consistent

21

SSDP on Cloud VM

SSDP on AWS/GCP VM

SSDP multicast works with proper config

22

SSDP on Hypervisor

SSDP on KVM/VMware

SSDP messages are routed correctly

23

SSDP on Network Bridge

SSDP across bridged interfaces

SSDP multicast is preserved

24

SSDP on Host-Only Network

SSDP in isolated network

SSDP messages are visible to host only

25

SSDP on VPN

SSDP over VPN tunnel

SSDP messages may be blocked or rerouted

26

SSDP on Proxy

SSDP behind proxy

SSDP may not function unless allowed

27

SSDP on NAT

SSDP behind NAT

SSDP works within local subnet

28

SSDP on IPv4

SSDP over IPv4 stack

SSDP messages are sent and received

29

SSDP on IPv6

SSDP over IPv6 stack

SSDP messages are sent and received

30

SSDP on Mixed IP Stack

SSDP on dual-stack system

SSDP works on both IP versions

31

SSDP on Mobile Hotspot

SSDP over hotspot network

SSDP messages are routed correctly

32

SSDP on Wi-Fi

SSDP over wireless network

SSDP multicast is supported

33

SSDP on Ethernet

SSDP over wired network

SSDP multicast is supported

34

SSDP on Bluetooth PAN

SSDP over Bluetooth network

SSDP may be unsupported or limited

35

SSDP on Satellite Link

SSDP over satellite network

SSDP may experience latency

36

SSDP on Mesh Network

SSDP in mesh topology

SSDP messages propagate correctly

37

SSDP on Cloud Gateway

SSDP through cloud gateway

SSDP messages are forwarded

38

SSDP on SDN

SSDP in software-defined network

SSDP routing is programmable

39

SSDP on VLAN

SSDP across VLANs

SSDP multicast may be restricted

40

SSDP on Network Emulator

SSDP in simulated environment

SSDP behavior is consistent

41

SSDP on Test Harness

SSDP in automated test rig

SSDP messages are validated

42

SSDP on CI/CD Pipeline

SSDP in continuous testing

SSDP tests pass across platforms

43

SSDP on Legacy OS

SSDP on older OS versions

SSDP may require compatibility tweaks

44

SSDP on Real-Time OS

SSDP on RTOS

SSDP timing is precise

45

SSDP on Web Browser

SSDP via browser extension

SSDP messages are visible in dev tools

46

SSDP on Node.js

SSDP via Node.js library

SSDP messages are correctly handled

47

SSDP on Python

SSDP via Python script

SSDP discovery and response work

48

SSDP on Java

SSDP via Java UPnP stack

SSDP messages are parsed correctly

49

SSDP on .NET

SSDP via .NET UPnP library

SSDP messages are handled correctly

50

SSDP on Cross-Platform SDK

SSDP via SDK (e.g., Qt)

SSDP works across OS targets

  • Reference links