2025-03-27 08:18:25 +01:00

153 lines
3.6 KiB
Go

package mediaserver
import (
"crypto/tls"
"crypto/x509"
"encoding/json"
"errors"
"fmt"
"io"
"net/http"
"time"
)
type httpClient interface {
Do(*http.Request) (*http.Response, error)
}
func buildAPIClient(certPEM []byte) (*http.Client, error) {
certPool := x509.NewCertPool()
if !certPool.AppendCertsFromPEM(certPEM) {
return nil, errors.New("failed to add certificate to pool")
}
return &http.Client{
Transport: &http.Transport{
TLSClientConfig: &tls.Config{
InsecureSkipVerify: true,
VerifyPeerCertificate: func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
cert, err := x509.ParseCertificate(rawCerts[0])
if err != nil {
return fmt.Errorf("parse certificate: %w", err)
}
if _, err := cert.Verify(x509.VerifyOptions{Roots: certPool}); err != nil {
return fmt.Errorf("TLS verification: %w", err)
}
return nil
},
},
},
}, nil
}
const userAgent = "octoplex-client"
type apiResponse[T any] struct {
Items []T `json:"items"`
}
type rtmpConnsResponse struct {
ID string `json:"id"`
CreatedAt time.Time `json:"created"`
State string `json:"state"`
Path string `json:"path"`
BytesReceived int64 `json:"bytesReceived"`
BytesSent int64 `json:"bytesSent"`
RemoteAddr string `json:"remoteAddr"`
}
type ingressStreamState struct {
ready bool
listeners int
}
// TODO: handle pagination
func fetchIngressState(apiURL string, streamKey StreamKey, httpClient httpClient) (state ingressStreamState, _ error) {
req, err := http.NewRequest(http.MethodGet, apiURL, nil)
if err != nil {
return state, fmt.Errorf("new request: %w", err)
}
req.Header.Set("User-Agent", userAgent)
httpResp, err := httpClient.Do(req)
if err != nil {
return state, fmt.Errorf("do request: %w", err)
}
if httpResp.StatusCode != http.StatusOK {
return state, fmt.Errorf("unexpected status code: %d", httpResp.StatusCode)
}
respBody, err := io.ReadAll(httpResp.Body)
if err != nil {
return state, fmt.Errorf("read body: %w", err)
}
var resp apiResponse[rtmpConnsResponse]
if err = json.Unmarshal(respBody, &resp); err != nil {
return state, fmt.Errorf("unmarshal: %w", err)
}
for _, conn := range resp.Items {
if conn.Path != string(streamKey) {
continue
}
switch conn.State {
case "publish":
// mediamtx may report a stream as being in publish state via the API,
// but still refuse to serve them due to being unpublished. This seems to
// be a bug, this is a hacky workaround.
state.ready = conn.BytesReceived > 20_000
case "read":
state.listeners++
}
}
return state, nil
}
type path struct {
Name string `json:"name"`
Tracks []string `json:"tracks"`
}
// TODO: handle pagination
func fetchTracks(apiURL string, streamKey StreamKey, httpClient httpClient) ([]string, error) {
req, err := http.NewRequest(http.MethodGet, apiURL, nil)
if err != nil {
return nil, fmt.Errorf("new request: %w", err)
}
req.Header.Set("User-Agent", userAgent)
httpResp, err := httpClient.Do(req)
if err != nil {
return nil, fmt.Errorf("do request: %w", err)
}
if httpResp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("unexpected status code: %d", httpResp.StatusCode)
}
respBody, err := io.ReadAll(httpResp.Body)
if err != nil {
return nil, fmt.Errorf("read body: %w", err)
}
var resp apiResponse[path]
if err = json.Unmarshal(respBody, &resp); err != nil {
return nil, fmt.Errorf("unmarshal: %w", err)
}
var tracks []string
for _, path := range resp.Items {
if path.Name == string(streamKey) {
tracks = path.Tracks
}
}
return tracks, nil
}