API Status Code

{
  retSendWaiting          = 31,          // Reserved
  retLivingAuthErr        = 30,          // Live stream status: authentication error
  retLivingNotset         = 29,          // Live stream address not set 
  retLivingDNS            = 28,          // Live stream status: Resolving DNS
  retInit                 = 27,          // Initialization 
  retLivingAuthing        = 25,          // Live stream status: authorizing
  retLivingWaiting        = 24,          // Live stream status: waiting for connection
  retLivingConnecting     = 23,          // Live stream status: connecting to the streaming destination
  retLivingConnected      = 22,          // Live stream status: stream server connected
  retPushReboot           = 21,
  retAudioSignalChange    = 20,
  retBlueWrite            = 19,
  retBlueRead             = 18,
  retBlueShutDown         = 17,
  retDiskOn               = 16,
  retDiskOff              = 15,
  retDiskChange           = 14,
  retSnapshotOver         = 13,
  retPushReset            = 12,
  retPushLiving           = 11,
  retPushRecord           = 10,
  retSignalChange         = 9,
  retRouteChange          = 8,
  retIPChange             = 7,
  retNetChange            = 6,
  retCancel               = 5,           // Request canceled
  retLowSpace             = 4,           // Reserved
  retLowSpeed             = 3,           // Reserved
  retRunning              = 2,           // Request is being processed
  retRepeat               = 1,           // Repeated request
  retSucceed              = 0,           // Request success
  errPasswd               = -1,          // Wrong password 
  errOccupied             = -2,          // Device occupied
  errDisconnect           = -3,          // Reserved
  errDevice               = -4,
  errDisk                 = -5,
  errUnconnect            = -6,
  errKey                  = -7,
  errVersion              = -8,
  errBusy                 = -9,          // System busy
  errParam                = -10,         // Incorrect request parameters
  errUsage                = -11,         // Reserved
  errTimeout              = -12,
  errIP                   = -13,         // Reserved
  errNotFound             = -14,         // Data not found
  errFile                 = -15,         // File error
  errNoSpace              = -16,         // Reserved
  errNeedAuth             = -17,         // Unauthorized log-in
  errSystem               = -18,         // System error
  errDiskSpeed            = -19,
  errEmpty                = -20,
  errNetwork              = -21,
  errEvent                = -22,
  errCodec                = -23,
  errBlue                 = -24,
  errNoUser               = -25,          // User not exist
  errNoPermissin          = -26,
  errSameName             = -27,          // Name already in use
  errString               = -28,          // Invalid input characters
  errChannelsLimited      = -29,          // Streaming 6 sessions simultaneously at most.
  err8MLimited            = -30,          // Reserved
  errFacebookLimited      = -31,          // Reserved
  errCodecLimited         = -32,          // Reserved
  err4GLimited            = -33,          // Reserved
  errMWFUnsupported       = -34,          // Update package does not match current model or hardware version
  errNoSignal             = -35,          // No signal
  errSDCard               = -36,
  errXinYueServer         = -37,          // Reserved
  errAliYunOSS            = -38,          // Reserved
  errSDNoSpace            = -39,          // Reserved
  errSDNoPermission       = -40,          // Reserved
  errRTSPLimited          = -41,          // Only one RTSP session is supported at a time
  errRTSP8MLimited        = -42,          // Reserved
  errBandwidthLimited     = -43,          // Reserved
  errPortLimited          = -44,          // Stream port occupied
  errNDILimited           = -45,          // Only one NDI|HX session is supported at a time
  errSRTLimited           = -46,          // Only one SRT Listener session is supported at a time
  errNDISettings          = -47,          // The substream can be up to 640x480@60 for a NDI|HX session
  errSubStreamSettings    = -48,          // The substream can be up to 1280x720@30 for a non-NDI|HX session
  errHLSLimited           = -49,          // Only one HLS session is supported at a time
  errProtocolLimited      = -50,          // Allow simultaneous sessions over the same streaming protocol
  errInit                 = -51,          // Failed to initialize channels for live streaming
  errDeinterlaceSettings  = -52,          // Deinterlace settings error
  errTVULimitted          = -53,          // Only one TVU ISSP task is supported to live
  errProtocolOneChannel   = -54,          // 
Unified error codes including errRTSPLimited/errNDILimited/errSRTLimited/errHLSLimited/errTVULimitted

}