Improve ONVIF server

2025-10-06 08:46:57 +08:00 · 2024-12-30 22:34:08 +03:00
parent 2c3219ffcb
commit f601c47218
8 changed files with 506 additions and 346 deletions
--- a/examples/onvif_client/main.go
+++ b/examples/onvif_client/main.go
@@ -0,0 +1,72 @@
+package main
+
+import (
+	"log"
+	"net"
+	"net/url"
+	"os"
+
+	"github.com/AlexxIT/go2rtc/pkg/onvif"
+)
+
+func main() {
+	var rawURL = os.Args[1]
+	var operation = os.Args[2]
+	var token string
+	if len(os.Args) > 3 {
+		token = os.Args[3]
+	}
+
+	client, err := onvif.NewClient(rawURL)
+	if err != nil {
+		log.Panic(err)
+	}
+
+	var b []byte
+
+	switch operation {
+	case onvif.ServiceGetServiceCapabilities:
+		b, err = client.MediaRequest(operation)
+	case onvif.DeviceGetCapabilities,
+		onvif.DeviceGetDeviceInformation,
+		onvif.DeviceGetDiscoveryMode,
+		onvif.DeviceGetDNS,
+		onvif.DeviceGetHostname,
+		onvif.DeviceGetNetworkDefaultGateway,
+		onvif.DeviceGetNetworkInterfaces,
+		onvif.DeviceGetNetworkProtocols,
+		onvif.DeviceGetNTP,
+		onvif.DeviceGetScopes,
+		onvif.DeviceGetServices,
+		onvif.DeviceGetSystemDateAndTime,
+		onvif.DeviceSystemReboot:
+		b, err = client.DeviceRequest(operation)
+	case onvif.MediaGetProfiles, onvif.MediaGetVideoSources:
+		b, err = client.MediaRequest(operation)
+	case onvif.MediaGetProfile:
+		b, err = client.GetProfile(token)
+	case onvif.MediaGetVideoSourceConfiguration:
+		b, err = client.GetVideoSourceConfiguration(token)
+	case onvif.MediaGetStreamUri:
+		b, err = client.GetStreamUri(token)
+	case onvif.MediaGetSnapshotUri:
+		b, err = client.GetSnapshotUri(token)
+	default:
+		log.Printf("unknown action\n")
+	}
+
+	if err != nil {
+		log.Printf("%s\n", err)
+	}
+
+	u, err := url.Parse(rawURL)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	host, _, _ := net.SplitHostPort(u.Host)
+
+	if err = os.WriteFile(host+"_"+operation+".xml", b, 0644); err != nil {
+		log.Printf("%s\n", err)
+	}
+}
--- a/internal/onvif/README.md
+++ b/internal/onvif/README.md
@@ -0,0 +1,25 @@
+# ONVIF
+
+A regular camera has a single video source (`GetVideoSources`) and two profiles (`GetProfiles`).
+
+Go2rtc has one video source and one profile per stream.
+
+## Tested clients
+
+Go2rtc works as ONVIF server:
+
+- Happytime onvif client (windows)
+- Home Assistant ONVIF integration (linux)
+- Onvier (android)
+- ONVIF Device Manager (windows)
+
+PS. Support only TCP transport for RTSP protocol. UDP and HTTP transports - unsupported yet.
+
+## Tested cameras
+
+Go2rtc works as ONVIF client:
+
+- Dahua IPC-K42
+- OpenIPC
+- Reolink RLC-520A
+- TP-Link Tapo TC60
--- a/internal/onvif/onvif.go
+++ b/internal/onvif/onvif.go
@@ -55,55 +55,65 @@ func onvifDeviceService(w http.ResponseWriter, r *http.Request) {
 		return
 	}

-	action := onvif.GetRequestAction(b)
-	if action == "" {
+	operation := onvif.GetRequestAction(b)
+	if operation == "" {
 		http.Error(w, "malformed request body", http.StatusBadRequest)
 		return
 	}

-	log.Trace().Msgf("[onvif] %s", action)
+	log.Trace().Msgf("[onvif] server request %s %s:\n%s", r.Method, r.RequestURI, b)

-	var res string
+	switch operation {
+	case onvif.DeviceGetNetworkInterfaces, // important for Hass
+		onvif.DeviceGetSystemDateAndTime, // important for Hass
+		onvif.DeviceGetDiscoveryMode,
+		onvif.DeviceGetDNS,
+		onvif.DeviceGetHostname,
+		onvif.DeviceGetNetworkDefaultGateway,
+		onvif.DeviceGetNetworkProtocols,
+		onvif.DeviceGetNTP,
+		onvif.DeviceGetScopes:
+		b = onvif.StaticResponse(operation)

-	switch action {
-	case onvif.ActionGetCapabilities:
+	case onvif.DeviceGetCapabilities:
 		// important for Hass: Media section
-		res = onvif.GetCapabilitiesResponse(r.Host)
+		b = onvif.GetCapabilitiesResponse(r.Host)

-	case onvif.ActionGetServices:
-		res = onvif.GetServicesResponse(r.Host)
+	case onvif.DeviceGetServices:
+		b = onvif.GetServicesResponse(r.Host)

-	case onvif.ActionGetSystemDateAndTime:
-		// important for Hass
-		res = onvif.GetSystemDateAndTimeResponse()
-
-	case onvif.ActionGetNetworkInterfaces:
-		// important for Hass: none
-		res = onvif.GetNetworkInterfacesResponse()
-
-	case onvif.ActionGetDeviceInformation:
+	case onvif.DeviceGetDeviceInformation:
 		// important for Hass: SerialNumber (unique server ID)
-		res = onvif.GetDeviceInformationResponse("", "go2rtc", app.Version, r.Host)
+		b = onvif.GetDeviceInformationResponse("", "go2rtc", app.Version, r.Host)

-	case onvif.ActionGetServiceCapabilities:
+	case onvif.ServiceGetServiceCapabilities:
 		// important for Hass
-		res = onvif.GetServiceCapabilitiesResponse()
+		// TODO: check path links to media
+		b = onvif.GetMediaServiceCapabilitiesResponse()

-	case onvif.ActionSystemReboot:
-		res = onvif.SystemRebootResponse()
+	case onvif.DeviceSystemReboot:
+		b = onvif.StaticResponse(operation)

 		time.AfterFunc(time.Second, func() {
 			os.Exit(0)
 		})

-	case onvif.ActionGetProfiles:
+	case onvif.MediaGetVideoSources:
+		b = onvif.GetVideoSourcesResponse(streams.GetAll())
+
+	case onvif.MediaGetProfiles:
 		// important for Hass: H264 codec, width, height
-		res = onvif.GetProfilesResponse(streams.GetAll())
+		b = onvif.GetProfilesResponse(streams.GetAll())

-	case onvif.ActionGetVideoSources:
-		res = onvif.GetVideoSourcesResponse(streams.GetAll())
+	case onvif.MediaGetProfile:
+		token := onvif.FindTagValue(b, "ProfileToken")
+		b = onvif.GetProfileResponse(token)

-	case onvif.ActionGetStreamUri:
+	case onvif.MediaGetVideoSourceConfiguration:
+		token := onvif.FindTagValue(b, "ConfigurationToken")
+		b = onvif.GetVideoSourceConfigurationResponse(token)
+
+	case onvif.MediaGetStreamUri:
 		host, _, err := net.SplitHostPort(r.Host)
 		if err != nil {
 			http.Error(w, err.Error(), http.StatusInternalServerError)
@@ -111,20 +121,22 @@ func onvifDeviceService(w http.ResponseWriter, r *http.Request) {
 		}

 		uri := "rtsp://" + host + ":" + rtsp.Port + "/" + onvif.FindTagValue(b, "ProfileToken")
-		res = onvif.GetStreamUriResponse(uri)
+		b = onvif.GetStreamUriResponse(uri)

-	case onvif.ActionGetSnapshotUri:
+	case onvif.MediaGetSnapshotUri:
 		uri := "http://" + r.Host + "/api/frame.jpeg?src=" + onvif.FindTagValue(b, "ProfileToken")
-		res = onvif.GetSnapshotUriResponse(uri)
+		b = onvif.GetSnapshotUriResponse(uri)

 	default:
-		http.Error(w, "unsupported action", http.StatusBadRequest)
+		http.Error(w, "unsupported operation", http.StatusBadRequest)
 		log.Debug().Msgf("[onvif] unsupported request:\n%s", b)
 		return
 	}

+	log.Trace().Msgf("[onvif] server response:\n%s", b)
+
 	w.Header().Set("Content-Type", "application/soap+xml; charset=utf-8")
-	if _, err = w.Write([]byte(res)); err != nil {
+	if _, err = w.Write(b); err != nil {
 		log.Error().Err(err).Caller().Send()
 	}
 }
@@ -170,7 +182,7 @@ func apiOnvif(w http.ResponseWriter, r *http.Request) {
 		}

 		if l := log.Trace(); l.Enabled() {
-			b, _ := client.GetProfiles()
+			b, _ := client.MediaRequest(onvif.MediaGetProfiles)
 			l.Msgf("[onvif] src=%s profiles:\n%s", src, b)
 		}

--- a/pkg/onvif/README.md
+++ b/pkg/onvif/README.md
@@ -0,0 +1,38 @@
+## Profiles
+
+- Profile A - For access control configuration
+- Profile C - For door control and event management
+- Profile S - For basic video streaming
+  - Video streaming and configuration
+- Profile T - For advanced video streaming
+  - H.264 / H.265 video compression
+  - Imaging settings
+  - Motion alarm and tampering events
+  - Metadata streaming
+  - Bi-directional audio
+
+## Services
+
+https://www.onvif.org/profiles/specifications/
+
+- https://www.onvif.org/ver10/device/wsdl/devicemgmt.wsdl
+- https://www.onvif.org/ver20/imaging/wsdl/imaging.wsdl
+- https://www.onvif.org/ver10/media/wsdl/media.wsdl
+
+## TMP
+
+|                        | Dahua   | Reolink | TP-Link |
+|------------------------|---------|---------|---------|
+| GetCapabilities        | no auth | no auth | no auth |
+| GetServices            | no auth | no auth | no auth |
+| GetServiceCapabilities | no auth | no auth | auth    |
+| GetSystemDateAndTime   | no auth | no auth | no auth |
+| GetNetworkInterfaces   | auth    | auth    | auth    |
+| GetDeviceInformation   | auth    | auth    | auth    |
+| GetProfiles            | auth    | auth    | auth    |
+| GetScopes              | auth    | auth    | auth    |
+
+- Dahua - onvif://192.168.10.90:80
+- Reolink - onvif://192.168.10.92:8000
+- TP-Link - onvif://192.168.10.91:2020/onvif/device_service
+- 
--- a/pkg/onvif/client.go
+++ b/pkg/onvif/client.go
@@ -2,8 +2,6 @@ package onvif

 import (
 	"bytes"
-	"crypto/sha1"
-	"encoding/base64"
 	"errors"
 	"html"
 	"io"
@@ -12,8 +10,6 @@ import (
 	"regexp"
 	"strings"
 	"time"
-
-	"github.com/AlexxIT/go2rtc/pkg/core"
 )

 const PathDevice = "/onvif/device_service"
@@ -41,7 +37,7 @@ func NewClient(rawURL string) (*Client, error) {
 		client.deviceURL = baseURL + u.Path
 	}

-	b, err := client.GetCapabilities()
+	b, err := client.DeviceRequest(DeviceGetCapabilities)
 	if err != nil {
 		return nil, err
 	}
@@ -95,7 +91,7 @@ func (c *Client) GetURI() (string, error) {
 }

 func (c *Client) GetName() (string, error) {
-	b, err := c.GetDeviceInformation()
+	b, err := c.DeviceRequest(DeviceGetDeviceInformation)
 	if err != nil {
 		return "", err
 	}
@@ -104,7 +100,7 @@ func (c *Client) GetName() (string, error) {
 }

 func (c *Client) GetProfilesTokens() ([]string, error) {
-	b, err := c.GetProfiles()
+	b, err := c.MediaRequest(MediaGetProfiles)
 	if err != nil {
 		return nil, err
 	}
@@ -127,86 +123,53 @@ func (c *Client) HasSnapshots() bool {
 	return strings.Contains(string(b), `SnapshotUri="true"`)
 }

-func (c *Client) GetCapabilities() ([]byte, error) {
+func (c *Client) GetProfile(token string) ([]byte, error) {
 	return c.Request(
-		c.deviceURL,
-		`<tds:GetCapabilities xmlns:tds="http://www.onvif.org/ver10/device/wsdl">
-	<tds:Category>All</tds:Category>
-</tds:GetCapabilities>`,
+		c.mediaURL, `<trt:GetProfile><trt:ProfileToken>`+token+`</trt:ProfileToken></trt:GetProfile>`,
 	)
 }

-func (c *Client) GetNetworkInterfaces() ([]byte, error) {
-	return c.Request(
-		c.deviceURL, `<tds:GetNetworkInterfaces xmlns:tds="http://www.onvif.org/ver10/device/wsdl"/>`,
-	)
-}
-
-func (c *Client) GetDeviceInformation() ([]byte, error) {
-	return c.Request(
-		c.deviceURL, `<tds:GetDeviceInformation xmlns:tds="http://www.onvif.org/ver10/device/wsdl"/>`,
-	)
-}
-
-func (c *Client) GetProfiles() ([]byte, error) {
-	return c.Request(
-		c.mediaURL, `<trt:GetProfiles xmlns:trt="http://www.onvif.org/ver10/media/wsdl"/>`,
-	)
+func (c *Client) GetVideoSourceConfiguration(token string) ([]byte, error) {
+	return c.Request(c.mediaURL, `<trt:GetVideoSourceConfiguration>
+	<trt:ConfigurationToken>`+token+`</trt:ConfigurationToken>
+</trt:GetVideoSourceConfiguration>`)
 }

 func (c *Client) GetStreamUri(token string) ([]byte, error) {
-	return c.Request(
-		c.mediaURL,
-		`<trt:GetStreamUri xmlns:trt="http://www.onvif.org/ver10/media/wsdl" xmlns:tt="http://www.onvif.org/ver10/schema">
+	return c.Request(c.mediaURL, `<trt:GetStreamUri>
 	<trt:StreamSetup>
 		<tt:Stream>RTP-Unicast</tt:Stream>
 		<tt:Transport><tt:Protocol>RTSP</tt:Protocol></tt:Transport>
 	</trt:StreamSetup>
 	<trt:ProfileToken>`+token+`</trt:ProfileToken>
-</trt:GetStreamUri>`,
-	)
+</trt:GetStreamUri>`)
 }

 func (c *Client) GetSnapshotUri(token string) ([]byte, error) {
 	return c.Request(
-		c.imaginURL,
-		`<trt:GetSnapshotUri xmlns:trt="http://www.onvif.org/ver10/media/wsdl">
-	<trt:ProfileToken>`+token+`</trt:ProfileToken>
-</trt:GetSnapshotUri>`,
-	)
-}
-
-func (c *Client) GetSystemDateAndTime() ([]byte, error) {
-	return c.Request(
-		c.deviceURL, `<tds:GetSystemDateAndTime xmlns:tds="http://www.onvif.org/ver10/device/wsdl"/>`,
+		c.imaginURL, `<trt:GetSnapshotUri><trt:ProfileToken>`+token+`</trt:ProfileToken></trt:GetSnapshotUri>`,
 	)
 }

 func (c *Client) GetServiceCapabilities() ([]byte, error) {
 	// some cameras answer GetServiceCapabilities for media only for path = "/onvif/media"
 	return c.Request(
-		c.mediaURL, `<trt:GetServiceCapabilities xmlns:trt="http://www.onvif.org/ver10/media/wsdl"/>`,
+		c.mediaURL, `<trt:GetServiceCapabilities />`,
 	)
 }

-func (c *Client) SystemReboot() ([]byte, error) {
-	return c.Request(
-		c.deviceURL, `<tds:SystemReboot xmlns:tds="http://www.onvif.org/ver10/device/wsdl"/>`,
-	)
+func (c *Client) DeviceRequest(operation string) ([]byte, error) {
+	if operation == DeviceGetServices {
+		operation = `<tds:GetServices><tds:IncludeCapability>true</tds:IncludeCapability></tds:GetServices>`
+	} else {
+		operation = `<tds:` + operation + `/>`
+	}
+	return c.Request(c.deviceURL, operation)
 }

-func (c *Client) GetServices() ([]byte, error) {
-	return c.Request(
-		c.deviceURL, `<tds:GetServices xmlns:tds="http://www.onvif.org/ver10/device/wsdl">
-	<tds:IncludeCapability>true</tds:IncludeCapability>
-</tds:GetServices>`,
-	)
-}
-
-func (c *Client) GetScopes() ([]byte, error) {
-	return c.Request(
-		c.deviceURL, `<tds:GetScopes xmlns:tds="http://www.onvif.org/ver10/device/wsdl" />`,
-	)
+func (c *Client) MediaRequest(operation string) ([]byte, error) {
+	operation = `<trt:` + operation + `/>`
+	return c.Request(c.mediaURL, operation)
 }

 func (c *Client) Request(url, body string) ([]byte, error) {
@@ -214,35 +177,11 @@ func (c *Client) Request(url, body string) ([]byte, error) {
 		return nil, errors.New("onvif: unsupported service")
 	}

-	buf := bytes.NewBuffer(nil)
-	buf.WriteString(
-		`<?xml version="1.0" encoding="UTF-8"?><s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope">`,
-	)
-
-	if user := c.url.User; user != nil {
-		nonce := core.RandString(16, 36)
-		created := time.Now().UTC().Format(time.RFC3339Nano)
-		pass, _ := user.Password()
-
-		h := sha1.New()
-		h.Write([]byte(nonce + created + pass))
-
-		buf.WriteString(`<s:Header>
-<wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd">
-<wsse:UsernameToken>
-<wsse:Username>` + user.Username() + `</wsse:Username>
-<wsse:Password Type="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordDigest">` + base64.StdEncoding.EncodeToString(h.Sum(nil)) + `</wsse:Password>
-<wsse:Nonce EncodingType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary">` + base64.StdEncoding.EncodeToString([]byte(nonce)) + `</wsse:Nonce>
-<wsu:Created xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">` + created + `</wsu:Created>
-</wsse:UsernameToken>
-</wsse:Security>
-</s:Header>`)
-	}
-
-	buf.WriteString(`<s:Body>` + body + `</s:Body></s:Envelope>`)
+	e := NewEnvelopeWithUser(c.url.User)
+	e.Append(body)

 	client := &http.Client{Timeout: time.Second * 5000}
-	res, err := client.Post(url, `application/soap+xml;charset=utf-8`, buf)
+	res, err := client.Post(url, `application/soap+xml;charset=utf-8`, bytes.NewReader(e.Bytes()))
 	if err != nil {
 		return nil, err
 	}
--- a/pkg/onvif/envelope.go
+++ b/pkg/onvif/envelope.go
@@ -0,0 +1,79 @@
+package onvif
+
+import (
+	"crypto/sha1"
+	"encoding/base64"
+	"fmt"
+	"net/url"
+	"time"
+
+	"github.com/AlexxIT/go2rtc/pkg/core"
+)
+
+type Envelope struct {
+	buf []byte
+}
+
+const (
+	prefix1 = `<?xml version="1.0" encoding="utf-8"?>
+<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope" xmlns:tt="http://www.onvif.org/ver10/schema" xmlns:tds="http://www.onvif.org/ver10/device/wsdl" xmlns:trt="http://www.onvif.org/ver10/media/wsdl">
+`
+	prefix2 = `<s:Body>
+`
+	suffix = `
+</s:Body>
+</s:Envelope>`
+)
+
+func NewEnvelope() *Envelope {
+	e := &Envelope{buf: make([]byte, 0, 1024)}
+	e.Append(prefix1, prefix2)
+	return e
+}
+
+func NewEnvelopeWithUser(user *url.Userinfo) *Envelope {
+	if user == nil {
+		return NewEnvelope()
+	}
+
+	nonce := core.RandString(16, 36)
+	created := time.Now().UTC().Format(time.RFC3339Nano)
+	pass, _ := user.Password()
+
+	h := sha1.New()
+	h.Write([]byte(nonce + created + pass))
+
+	e := &Envelope{buf: make([]byte, 0, 1024)}
+	e.Append(prefix1)
+	e.Appendf(`<s:Header>
+	<wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd">
+		<wsse:UsernameToken>
+			<wsse:Username>%s</wsse:Username>
+			<wsse:Password Type="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordDigest">%s</wsse:Password>
+			<wsse:Nonce EncodingType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary">%s</wsse:Nonce>
+			<wsu:Created xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">%s</wsu:Created>
+		</wsse:UsernameToken>
+	</wsse:Security>
+</s:Header>
+`,
+		user.Username(),
+		base64.StdEncoding.EncodeToString(h.Sum(nil)),
+		base64.StdEncoding.EncodeToString([]byte(nonce)),
+		created)
+	e.Append(prefix2)
+	return e
+}
+
+func (e *Envelope) Append(args ...string) {
+	for _, s := range args {
+		e.buf = append(e.buf, s...)
+	}
+}
+
+func (e *Envelope) Appendf(format string, args ...any) {
+	e.buf = fmt.Appendf(e.buf, format, args...)
+}
+
+func (e *Envelope) Bytes() []byte {
+	return append(e.buf, suffix...)
+}
--- a/pkg/onvif/helpers.go
+++ b/pkg/onvif/helpers.go
@@ -1,6 +1,7 @@
 package onvif

 import (
+	"fmt"
 	"net"
 	"regexp"
 	"strconv"
@@ -106,3 +107,25 @@ func atoi(s string) int {
 	}
 	return i
 }
+
+func GetPosixTZ(current time.Time) string {
+	// Thanks to https://github.com/Path-Variable/go-posix-time
+	_, offset := current.Zone()
+
+	if current.IsDST() {
+		_, end := current.ZoneBounds()
+		endPlus1 := end.Add(time.Hour * 25)
+		_, offset = endPlus1.Zone()
+	}
+
+	var prefix string
+	if offset < 0 {
+		prefix = "GMT+"
+		offset = -offset / 60
+	} else {
+		prefix = "GMT-"
+		offset = offset / 60
+	}
+
+	return prefix + fmt.Sprintf("%02d:%02d", offset/60, offset%60)
+}
--- a/pkg/onvif/server.go
+++ b/pkg/onvif/server.go
@@ -2,31 +2,40 @@ package onvif

 import (
 	"bytes"
-	"fmt"
 	"regexp"
-	"strconv"
 	"time"
 )

-const (
-	ActionGetCapabilities        = "GetCapabilities"
-	ActionGetSystemDateAndTime   = "GetSystemDateAndTime"
-	ActionGetNetworkInterfaces   = "GetNetworkInterfaces"
-	ActionGetDeviceInformation   = "GetDeviceInformation"
-	ActionGetServiceCapabilities = "GetServiceCapabilities"
-	ActionGetProfiles            = "GetProfiles"
-	ActionGetStreamUri           = "GetStreamUri"
-	ActionGetSnapshotUri         = "GetSnapshotUri"
-	ActionSystemReboot           = "SystemReboot"
+const ServiceGetServiceCapabilities = "GetServiceCapabilities"

-	ActionGetServices                   = "GetServices"
-	ActionGetScopes                     = "GetScopes"
-	ActionGetVideoSources               = "GetVideoSources"
-	ActionGetAudioSources               = "GetAudioSources"
-	ActionGetVideoSourceConfigurations  = "GetVideoSourceConfigurations"
-	ActionGetAudioSourceConfigurations  = "GetAudioSourceConfigurations"
-	ActionGetVideoEncoderConfigurations = "GetVideoEncoderConfigurations"
-	ActionGetAudioEncoderConfigurations = "GetAudioEncoderConfigurations"
+const (
+	DeviceGetCapabilities          = "GetCapabilities"
+	DeviceGetDeviceInformation     = "GetDeviceInformation"
+	DeviceGetDiscoveryMode         = "GetDiscoveryMode"
+	DeviceGetDNS                   = "GetDNS"
+	DeviceGetHostname              = "GetHostname"
+	DeviceGetNetworkDefaultGateway = "GetNetworkDefaultGateway"
+	DeviceGetNetworkInterfaces     = "GetNetworkInterfaces"
+	DeviceGetNetworkProtocols      = "GetNetworkProtocols"
+	DeviceGetNTP                   = "GetNTP"
+	DeviceGetScopes                = "GetScopes"
+	DeviceGetServices              = "GetServices"
+	DeviceGetSystemDateAndTime     = "GetSystemDateAndTime"
+	DeviceSystemReboot             = "SystemReboot"
+)
+
+const (
+	MediaGetAudioEncoderConfigurations = "GetAudioEncoderConfigurations"
+	MediaGetAudioSources               = "GetAudioSources"
+	MediaGetAudioSourceConfigurations  = "GetAudioSourceConfigurations"
+	MediaGetProfile                    = "GetProfile"
+	MediaGetProfiles                   = "GetProfiles"
+	MediaGetSnapshotUri                = "GetSnapshotUri"
+	MediaGetStreamUri                  = "GetStreamUri"
+	MediaGetVideoEncoderConfigurations = "GetVideoEncoderConfigurations"
+	MediaGetVideoSources               = "GetVideoSources"
+	MediaGetVideoSourceConfiguration   = "GetVideoSourceConfiguration"
+	MediaGetVideoSourceConfigurations  = "GetVideoSourceConfigurations"
 )

 func GetRequestAction(b []byte) string {
@@ -43,236 +52,199 @@ func GetRequestAction(b []byte) string {
 	return string(m[1])
 }

-func GetCapabilitiesResponse(host string) string {
-	return `<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope">
-    <s:Body>
-        <tds:GetCapabilitiesResponse xmlns:tds="http://www.onvif.org/ver10/device/wsdl">
-            <tds:Capabilities xmlns:tt="http://www.onvif.org/ver10/schema">
-                <tt:Device>
-                    <tt:XAddr>http://` + host + `/onvif/device_service</tt:XAddr>
-                </tt:Device>
-                <tt:Media>
-                    <tt:XAddr>http://` + host + `/onvif/media_service</tt:XAddr>
-                    <tt:StreamingCapabilities>
-                        <tt:RTPMulticast>false</tt:RTPMulticast>
-                        <tt:RTP_TCP>false</tt:RTP_TCP>
-                        <tt:RTP_RTSP_TCP>true</tt:RTP_RTSP_TCP>
-                    </tt:StreamingCapabilities>
-                </tt:Media>
-            </tds:Capabilities>
-        </tds:GetCapabilitiesResponse>
-    </s:Body>
-</s:Envelope>`
+func GetCapabilitiesResponse(host string) []byte {
+	e := NewEnvelope()
+	e.Append(`<tds:GetCapabilitiesResponse>
+	<tds:Capabilities>
+		<tt:Device>
+			<tt:XAddr>http://`, host, `/onvif/device_service</tt:XAddr>
+		</tt:Device>
+		<tt:Media>
+			<tt:XAddr>http://`, host, `/onvif/media_service</tt:XAddr>
+			<tt:StreamingCapabilities>
+				<tt:RTPMulticast>false</tt:RTPMulticast>
+				<tt:RTP_TCP>false</tt:RTP_TCP>
+				<tt:RTP_RTSP_TCP>true</tt:RTP_RTSP_TCP>
+			</tt:StreamingCapabilities>
+		</tt:Media>
+	</tds:Capabilities>
+</tds:GetCapabilitiesResponse>`)
+	return e.Bytes()
 }

-func GetServicesResponse(host string) string {
-	return `<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope">
-    <s:Body>
-        <tds:GetServicesResponse xmlns:tds="http://www.onvif.org/ver10/device/wsdl">
-            <tds:Service>
-                <tds:Namespace>http://www.onvif.org/ver10/device/wsdl</tds:Namespace>
-                <tds:XAddr>http://` + host + `/onvif/device_service</tds:XAddr>
-                <tds:Version>
-                    <tds:Major>2</tds:Major>
-                    <tds:Minor>5</tds:Minor>
-                </tds:Version>
-            </tds:Service>
-            <tds:Service>
-                <tds:Namespace>http://www.onvif.org/ver10/media/wsdl</tds:Namespace>
-                <tds:XAddr>http://` + host + `/onvif/media_service</tds:XAddr>
-                <tds:Version>
-                    <tds:Major>2</tds:Major>
-                    <tds:Minor>5</tds:Minor>
-                </tds:Version>
-            </tds:Service>
-        </tds:GetServicesResponse>
-    </s:Body>
-</s:Envelope>`
+func GetServicesResponse(host string) []byte {
+	e := NewEnvelope()
+	e.Append(`<tds:GetServicesResponse>
+	<tds:Service>
+		<tds:Namespace>http://www.onvif.org/ver10/device/wsdl</tds:Namespace>
+		<tds:XAddr>http://`, host, `/onvif/device_service</tds:XAddr>
+		<tds:Version><tt:Major>2</tt:Major><tt:Minor>5</tt:Minor></tds:Version>
+	</tds:Service>
+	<tds:Service>
+		<tds:Namespace>http://www.onvif.org/ver10/media/wsdl</tds:Namespace>
+		<tds:XAddr>http://`, host, `/onvif/media_service</tds:XAddr>
+		<tds:Version><tt:Major>2</tt:Major><tt:Minor>5</tt:Minor></tds:Version>
+	</tds:Service>
+</tds:GetServicesResponse>`)
+	return e.Bytes()
 }

-func GetSystemDateAndTimeResponse() string {
+func GetSystemDateAndTimeResponse() []byte {
 	loc := time.Now()
 	utc := loc.UTC()

-	return fmt.Sprintf(`<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope">
-    <s:Body>
-        <tds:GetSystemDateAndTimeResponse xmlns:tds="http://www.onvif.org/ver10/device/wsdl">
-            <tds:SystemDateAndTime xmlns:tt="http://www.onvif.org/ver10/schema">
-                <tt:DateTimeType>NTP</tt:DateTimeType>
-                <tt:DaylightSavings>false</tt:DaylightSavings>
-                <tt:TimeZone>
-                    <tt:TZ>GMT%s</tt:TZ>
-                </tt:TimeZone>
-                <tt:UTCDateTime>
-                    <tt:Time>
-                        <tt:Hour>%d</tt:Hour>
-                        <tt:Minute>%d</tt:Minute>
-                        <tt:Second>%d</tt:Second>
-                    </tt:Time>
-                    <tt:Date>
-                        <tt:Year>%d</tt:Year>
-                        <tt:Month>%d</tt:Month>
-                        <tt:Day>%d</tt:Day>
-                    </tt:Date>
-                </tt:UTCDateTime>
-                <tt:LocalDateTime>
-                    <tt:Time>
-                        <tt:Hour>%d</tt:Hour>
-                        <tt:Minute>%d</tt:Minute>
-                        <tt:Second>%d</tt:Second>
-                    </tt:Time>
-                    <tt:Date>
-                        <tt:Year>%d</tt:Year>
-                        <tt:Month>%d</tt:Month>
-                        <tt:Day>%d</tt:Day>
-                    </tt:Date>
-                </tt:LocalDateTime>
-            </tds:SystemDateAndTime>
-        </tds:GetSystemDateAndTimeResponse>
-    </s:Body>
-</s:Envelope>`,
-		loc.Format("-07:00"),
+	e := NewEnvelope()
+	e.Appendf(`<tds:GetSystemDateAndTimeResponse>
+	<tds:SystemDateAndTime>
+		<tt:DateTimeType>NTP</tt:DateTimeType>
+		<tt:DaylightSavings>true</tt:DaylightSavings>
+		<tt:TimeZone>
+			<tt:TZ>%s</tt:TZ>
+		</tt:TimeZone>
+		<tt:UTCDateTime>
+			<tt:Time><tt:Hour>%d</tt:Hour><tt:Minute>%d</tt:Minute><tt:Second>%d</tt:Second></tt:Time>
+			<tt:Date><tt:Year>%d</tt:Year><tt:Month>%d</tt:Month><tt:Day>%d</tt:Day></tt:Date>
+		</tt:UTCDateTime>
+		<tt:LocalDateTime>
+			<tt:Time><tt:Hour>%d</tt:Hour><tt:Minute>%d</tt:Minute><tt:Second>%d</tt:Second></tt:Time>
+			<tt:Date><tt:Year>%d</tt:Year><tt:Month>%d</tt:Month><tt:Day>%d</tt:Day></tt:Date>
+		</tt:LocalDateTime>
+	</tds:SystemDateAndTime>
+</tds:GetSystemDateAndTimeResponse>`,
+		GetPosixTZ(loc),
 		utc.Hour(), utc.Minute(), utc.Second(), utc.Year(), utc.Month(), utc.Day(),
 		loc.Hour(), loc.Minute(), loc.Second(), loc.Year(), loc.Month(), loc.Day(),
 	)
+	return e.Bytes()
 }

-func GetNetworkInterfacesResponse() string {
-	return `<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope">
-    <s:Body>
-        <tds:GetNetworkInterfacesResponse xmlns:tds="http://www.onvif.org/ver10/device/wsdl"/>
-    </s:Body>
-</s:Envelope>`
+func GetDeviceInformationResponse(manuf, model, firmware, serial string) []byte {
+	e := NewEnvelope()
+	e.Append(`<tds:GetDeviceInformationResponse>
+	<tds:Manufacturer>`, manuf, `</tds:Manufacturer>
+	<tds:Model>`, model, `</tds:Model>
+	<tds:FirmwareVersion>`, firmware, `</tds:FirmwareVersion>
+	<tds:SerialNumber>`, serial, `</tds:SerialNumber>
+	<tds:HardwareId>1.00</tds:HardwareId>
+</tds:GetDeviceInformationResponse>`)
+	return e.Bytes()
 }

-func GetDeviceInformationResponse(manuf, model, firmware, serial string) string {
-	return `<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope">
-    <s:Body>
-        <tds:GetDeviceInformationResponse xmlns:tds="http://www.onvif.org/ver10/device/wsdl">
-            <tds:Manufacturer>` + manuf + `</tds:Manufacturer>
-            <tds:Model>` + model + `</tds:Model>
-            <tds:FirmwareVersion>` + firmware + `</tds:FirmwareVersion>
-            <tds:SerialNumber>` + serial + `</tds:SerialNumber>
-            <tds:HardwareId>1.00</tds:HardwareId>
-        </tds:GetDeviceInformationResponse>
-    </s:Body>
-</s:Envelope>`
+func GetMediaServiceCapabilitiesResponse() []byte {
+	e := NewEnvelope()
+	e.Append(`<trt:GetServiceCapabilitiesResponse>
+	<trt:Capabilities SnapshotUri="true" Rotation="false" VideoSourceMode="false" OSD="false" TemporaryOSDText="false" EXICompression="false">
+		<trt:StreamingCapabilities RTPMulticast="false" RTP_TCP="false" RTP_RTSP_TCP="true" NonAggregateControl="false" NoRTSPStreaming="false" />
+	</trt:Capabilities>
+</trt:GetServiceCapabilitiesResponse>`)
+	return e.Bytes()
 }

-func GetServiceCapabilitiesResponse() string {
-	return `<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope">
-    <s:Body>
-        <trt:GetServiceCapabilitiesResponse xmlns:trt="http://www.onvif.org/ver10/media/wsdl">
-            <trt:Capabilities SnapshotUri="true" Rotation="false" VideoSourceMode="false" OSD="false" TemporaryOSDText="false" EXICompression="false">
-                <trt:StreamingCapabilities RTPMulticast="false" RTP_TCP="false" RTP_RTSP_TCP="true" NonAggregateControl="false" NoRTSPStreaming="false" />
-            </trt:Capabilities>
-        </trt:GetServiceCapabilitiesResponse>
-    </s:Body>
-</s:Envelope>`
+func GetProfilesResponse(names []string) []byte {
+	e := NewEnvelope()
+	e.Append(`<trt:GetProfilesResponse>
+`)
+	for _, name := range names {
+		appendProfile(e, "Profiles", name)
+	}
+	e.Append(`</trt:GetProfilesResponse>`)
+	return e.Bytes()
 }

-func SystemRebootResponse() string {
-	return `<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope">
-    <s:Body>
-        <tds:SystemRebootResponse xmlns:tds="http://www.onvif.org/ver10/device/wsdl">
-            <tds:Message>system reboot in 1 second...</tds:Message>
-        </tds:SystemRebootResponse>
-    </s:Body>
-</s:Envelope>`
+func GetProfileResponse(name string) []byte {
+	e := NewEnvelope()
+	e.Append(`<trt:GetProfileResponse>
+`)
+	appendProfile(e, "Profile", name)
+	e.Append(`</trt:GetProfileResponse>`)
+	return e.Bytes()
 }

-func GetProfilesResponse(names []string) string {
-	buf := bytes.NewBuffer(nil)
-	buf.WriteString(`<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope">
-    <s:Body>
-        <trt:GetProfilesResponse xmlns:trt="http://www.onvif.org/ver10/media/wsdl" xmlns:tt="http://www.onvif.org/ver10/schema">`)
+func appendProfile(e *Envelope, tag, name string) {
+	e.Append(`<trt:`, tag, ` token="`, name, `" fixed="true">
+	<tt:Name>`, name, `</tt:Name>
+	<tt:VideoSourceConfiguration token="`, name, `">
+		<tt:Name>VSC</tt:Name>
+		<tt:SourceToken>`, name, `</tt:SourceToken>
+		<tt:Bounds x="0" y="0" width="1920" height="1080"></tt:Bounds>
+	</tt:VideoSourceConfiguration>
+	<tt:VideoEncoderConfiguration token="vec">
+		<tt:Name>VEC</tt:Name>
+		<tt:Encoding>H264</tt:Encoding>
+		<tt:Resolution><tt:Width>1920</tt:Width><tt:Height>1080</tt:Height></tt:Resolution>
+	</tt:VideoEncoderConfiguration>
+</trt:`, tag, `>
+`)
+}

-	for i, name := range names {
-		buf.WriteString(`
-            <trt:Profiles token="` + name + `" fixed="true">
-                <trt:Name>` + name + `</trt:Name>
-                <trt:VideoEncoderConfiguration token="` + strconv.Itoa(i) + `">
-                    <trt:Name>` + name + `</trt:Name>
-                    <trt:Encoding>H264</trt:Encoding>
-                    <trt:Resolution>
-                        <trt:Width>1920</trt:Width>
-                        <trt:Height>1080</trt:Height>
-                    </trt:Resolution>
-                    <trt:RateControl>
-                    </trt:RateControl>
-                </trt:VideoEncoderConfiguration>
-                <trt:VideoSourceConfiguration token="` + strconv.Itoa(i) + `">
-                    <trt:Name>` + name + `</trt:Name>
-                    <trt:SourceToken>` + strconv.Itoa(i) + `</trt:SourceToken>
-                    <trt:Bounds x="0" y="0" width="1920" height="1080"></trt:Bounds>
-                </trt:VideoSourceConfiguration>
-            </trt:Profiles>`)
+func GetVideoSourceConfigurationResponse(name string) []byte {
+	e := NewEnvelope()
+	e.Append(`<trt:GetVideoSourceConfigurationResponse>
+	<trt:Configuration token="`, name, `">
+		<tt:Name>VSC</tt:Name>
+		<tt:SourceToken>`, name, `</tt:SourceToken>
+		<tt:Bounds x="0" y="0" width="1920" height="1080"></tt:Bounds>
+	</trt:Configuration>
+</trt:GetVideoSourceConfigurationResponse>`)
+	return e.Bytes()
+}
+
+func GetVideoSourcesResponse(names []string) []byte {
+	e := NewEnvelope()
+	e.Append(`<trt:GetVideoSourcesResponse>
+`)
+	for _, name := range names {
+		e.Append(`<trt:VideoSources token="`, name, `">
+	<tt:Framerate>30.000000</tt:Framerate>
+	<tt:Resolution><tt:Width>1920</tt:Width><tt:Height>1080</tt:Height></tt:Resolution>
+</trt:VideoSources>
+`)
+	}
+	e.Append(`</trt:GetVideoSourcesResponse>`)
+	return e.Bytes()
+}
+
+func GetStreamUriResponse(uri string) []byte {
+	e := NewEnvelope()
+	e.Append(`<trt:GetStreamUriResponse><trt:MediaUri><tt:Uri>`, uri, `</tt:Uri></trt:MediaUri></trt:GetStreamUriResponse>`)
+	return e.Bytes()
+}
+
+func GetSnapshotUriResponse(uri string) []byte {
+	e := NewEnvelope()
+	e.Append(`<trt:GetSnapshotUriResponse><trt:MediaUri><tt:Uri>`, uri, `</tt:Uri></trt:MediaUri></trt:GetSnapshotUriResponse>`)
+	return e.Bytes()
+}
+
+func StaticResponse(operation string) []byte {
+	switch operation {
+	case DeviceGetSystemDateAndTime:
+		return GetSystemDateAndTimeResponse()
 	}

-	buf.WriteString(`
-        </trt:GetProfilesResponse>
-    </s:Body>
-</s:Envelope>`)
-
-	return buf.String()
-}
-
-
-func GetVideoSourcesResponse(names []string) string {
-	buf := bytes.NewBuffer(nil)
-	buf.WriteString(`<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope">
-    <s:Body>
-            <trt:GetVideoSourcesResponse xmlns:trt="http://www.onvif.org/ver10/media/wsdl">`)
-
-	for i, _ := range names {
-		buf.WriteString(`
-            <trt:VideoSources token="` + strconv.Itoa(i) + `">
-                <trt:Resolution>
-                    <trt:Width>1920</trt:Width>
-                    <trt:Height>1080</trt:Height>
-                </trt:Resolution>
-            </trt:VideoSources>`)
+	e := NewEnvelope()
+	e.Append(responses[operation])
+	b := e.Bytes()
+	if operation == DeviceGetNetworkInterfaces {
+		println()
 	}
-
-	buf.WriteString(`
-        </trt:GetVideoSourcesResponse >
-    </s:Body>
-</s:Envelope>`)
-
-	return buf.String()
+	return b
 }

-func GetStreamUriResponse(uri string) string {
-	return `<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope">
-    <s:Body>
-        <trt:GetStreamUriResponse xmlns:trt="http://www.onvif.org/ver10/media/wsdl">
-            <trt:MediaUri>
-                <trt:Uri>` + uri + `</trt:Uri>
-            </trt:MediaUri>
-        </trt:GetStreamUriResponse>
-    </s:Body>
-</s:Envelope>`
-}
+var responses = map[string]string{
+	DeviceGetDiscoveryMode:         `<tds:GetDiscoveryModeResponse><tds:DiscoveryMode>Discoverable</tds:DiscoveryMode></tds:GetDiscoveryModeResponse>`,
+	DeviceGetDNS:                   `<tds:GetDNSResponse><tds:DNSInformation /></tds:GetDNSResponse>`,
+	DeviceGetHostname:              `<tds:GetHostnameResponse><tds:HostnameInformation /></tds:GetHostnameResponse>`,
+	DeviceGetNetworkDefaultGateway: `<tds:GetNetworkDefaultGatewayResponse><tds:NetworkGateway /></tds:GetNetworkDefaultGatewayResponse>`,
+	DeviceGetNTP:                   `<tds:GetNTPResponse><tds:NTPInformation /></tds:GetNTPResponse>`,
+	DeviceSystemReboot:             `<tds:SystemRebootResponse><tds:Message>OK</tds:Message></tds:SystemRebootResponse>`,

-func GetSnapshotUriResponse(uri string) string {
-	return `<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope">
-    <s:Body>
-        <trt:GetSnapshotUriResponse xmlns:trt="http://www.onvif.org/ver10/media/wsdl">
-            <trt:MediaUri>
-                <trt:Uri>` + uri + `</trt:Uri>
-            </trt:MediaUri>
-        </trt:GetSnapshotUriResponse>
-    </s:Body>
-</s:Envelope>`
+	DeviceGetNetworkInterfaces: `<tds:GetNetworkInterfacesResponse />`,
+	DeviceGetNetworkProtocols:  `<tds:GetNetworkProtocolsResponse />`,
+	DeviceGetScopes: `<tds:GetScopesResponse>
+	<tds:Scopes><tt:ScopeDef>Fixed</tt:ScopeDef><tt:ScopeItem>onvif://www.onvif.org/name/go2rtc</tt:ScopeItem></tds:Scopes>
+	<tds:Scopes><tt:ScopeDef>Fixed</tt:ScopeDef><tt:ScopeItem>onvif://www.onvif.org/location/github</tt:ScopeItem></tds:Scopes>
+	<tds:Scopes><tt:ScopeDef>Fixed</tt:ScopeDef><tt:ScopeItem>onvif://www.onvif.org/Profile/Streaming</tt:ScopeItem></tds:Scopes>
+	<tds:Scopes><tt:ScopeDef>Fixed</tt:ScopeDef><tt:ScopeItem>onvif://www.onvif.org/type/Network_Video_Transmitter</tt:ScopeItem></tds:Scopes>
+</tds:GetScopesResponse>`,
 }