Files
xPushService/Base/XBaseWebRTCHub.cs
T
2024-01-25 04:47:14 +03:30

836 lines
26 KiB
C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.SignalR;
using xCommons.Extensions;
using xExceptions.Constants;
using xModels.Dtos;
using xPushService.Constants;
using xPushService.Extensions;
using xPushService.Interfaces;
using xPushService.Models;
namespace xPushService.Base {
public abstract class XBaseWebRTCHub : XBaseHub {
//
#region Props ...
protected readonly IXWebRTCConnectionStore webRTCConnectionStore;
#endregion
//
#region Constructor ...
public XBaseWebRTCHub (
IXPushGroupStore groupStore,
IXPushConnectionStore connectionStore,
IXWebRTCConnectionStore webRTCConnectionStore
) : base (groupStore, connectionStore) {
this.webRTCConnectionStore = webRTCConnectionStore;
}
#endregion
//
#region Overrides ...
public override Task OnConnectedAsync () {
return base.OnConnectedAsync ();
}
public override Task OnDisconnectedAsync (Exception exception) {
// //
// var connectionId = GetConnectionId ();
// //
// // Find Connections Active Calls ...
// var activeConnections = webRTCConnectionStore
// .FindMany (c => c.CallerConnectionId
// .ToNormalString () == connectionId
// .ToNormalString () ||
// c.IsInCallees (connectionId)
// )
// .RunTask ();
// //
// if (activeConnections.HasChild ()) {
// activeConnections
// .ToList ()
// .ForEach (c => {
// //
// CancelCall (
// cancellerConnectionId: connectionId,
// reason: XCallEndReason.Disconnected,
// request: c
// )
// .RunTask ();
// });
// }
//
return base.OnDisconnectedAsync (exception);
}
#endregion
//
#region Actions ...
/// <summary>
/// Send PreOffer Call Request ...
/// </summary>
/// <param name="type"></param>
/// <param name="connectionId"></param>
/// <param name="device"></param>
/// <returns></returns>
public Task<bool> RequestCall (
XCallType type,
string connectionId,
XDeviceDto device
) {
//
// Validate Args ...
if (type == XCallType.None || connectionId.IsNullOrEmpty ()) {
return Task.FromResult (false);
}
//
// Check Connection Exists ...
var isConnectionExists = connectionStore
.IsExistsConnectionId (connectionId)
.RunTask ();
if (!isConnectionExists) {
return Task.FromResult (false);
}
//
// retrieve connection object ...
var request = GetWebRTCConnection (
calleeDevice: device,
connectionType: type,
calleeConnectionId: connectionId
)
.RunTask ();
//
// Add Connection to Store ...
AddOrUpdateWebRTCConnection (request)
.RunTask ();
//
try {
//
Clients
.Clients (
request
.GetReceivers ()
)
.SendAsync (
XWebRTCAction.RequestCall.GetStringValue (),
request
)
.RunTask ();
//
return Task.FromResult (true);
} catch { }
//
return Task.FromResult (false);
}
/// <summary>
/// Send PreOffer Call Request ...
/// </summary>
/// <param name="type"></param>
/// <param name="user"></param>
/// <param name="device"></param>
/// <returns></returns>
public Task<bool> RequestUserCall (
XCallType type,
string user,
XDeviceDto device
) {
//
// Validate Args ...
if (type == XCallType.None || user.IsNullOrEmpty ()) {
return Task.FromResult (false);
}
//
// Check Connection Exists ...
var isConnectionExists = connectionStore
.IsExistsUser (user)
.RunTask ();
if (!isConnectionExists) {
return Task.FromResult (false);
}
//
// retrieve connection object ...
var request = GetUserWebRTCConnection (
calleeDevice: device,
connectionType: type,
calleeUser: user
)
.RunTask ();
//
// Add Connection to Store ...
AddOrUpdateWebRTCConnection (request)
.RunTask ();
//
try {
//
Clients
.Clients (
request
.GetReceivers ()
)
.SendAsync (
XWebRTCAction.RequestCall.GetStringValue (),
request
)
.RunTask ();
//
return Task.FromResult (true);
} catch { }
//
return Task.FromResult (false);
}
/// <summary>
/// Cancel or End Requested Call ...
/// </summary>
/// <returns></returns>
public Task<bool> CancelCall (
string cancellerConnectionId,
XCallEndReason reason,
XWebRTCConnectionDto request) {
//
// Validate Args ...
var isValid = IsWebRTCConnectionsExists (request)
.RunTask ();
if (!isValid) {
return Task.FromResult (false);
}
//
// Check if i am Caller ...
var isCancellerCaller = request
.IsCaller (cancellerConnectionId);
var isCancellerInCallees = request
.IsInCallees (cancellerConnectionId);
//
if (isCancellerCaller) {
//
request.Callees.ToList ().ForEach (callee => {
//
callee.EndReason = reason;
callee.EndTime = DateTime.UtcNow;
});
//
// Remove Connection From Store ...
webRTCConnectionStore
.Remove (request)
.RunTask ();
} else if (isCancellerInCallees) {
//
var canceller = request.GetCallee (cancellerConnectionId);
if (canceller.IsNull ()) {
return Task.FromResult (false);
}
//
var updatedCanceller = canceller;
updatedCanceller.EndReason = reason;
updatedCanceller.EndTime = DateTime.UtcNow;
//
request.Callees = request.Callees
.Update (canceller, updatedCanceller);
//
// Remove connection from Store if all callees end calls ...
var canRemoveConnection = request.Callees.All (c => !c.EndTime.IsNull () && !c.EndReason.IsNull ());
if (canRemoveConnection) {
webRTCConnectionStore
.Remove (request)
.RunTask ();
} else {
webRTCConnectionStore
.Update (request)
.RunTask ();
}
}
//
try {
//
Clients
.Clients (
request.GetReceivers ()
)
.SendAsync (
XWebRTCAction.CancelCall.GetStringValue (),
request
);
//
return Task.FromResult (true);
} catch {
return Task.FromResult (false);
}
}
/// <summary>
/// end a call request ...
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
public Task<bool> RejectCall (
string rejecterConnectionId,
XWebRTCConnectionDto request
) {
//
// Validate Args ...
var isValid = IsWebRTCConnectionsExists (request)
.RunTask ();
var isRejecterInCallees = request
.IsInCallees (rejecterConnectionId);
if (!isValid ||
!isRejecterInCallees ||
rejecterConnectionId.IsNullOrEmpty ()
) {
return Task.FromResult (false);
}
//
// Find Rejecter and Push Reject to it ...
var rejecter = request
.GetCallee (rejecterConnectionId);
if (rejecter.IsNull ()) {
return Task.FromResult (false);
}
//
// Update request Callees ...
var updatedRejecter = rejecter;
updatedRejecter.EndTime = DateTime.UtcNow;
updatedRejecter.EndReason = XCallEndReason.Reject;
request.Callees = request.Callees
.Update (rejecter, updatedRejecter);
//
// Check if Only one Callee and he Reject, Remove connection From Store,
// otherwise Update connection ...
var canRemoveConnection = request
.Callees.Count () == 1 && request.Callees
.All (c => c.ConnectionId
.ToNormalString () == rejecterConnectionId
.ToNormalString ()
);
if (canRemoveConnection) {
webRTCConnectionStore
.Remove (request)
.RunTask ();
}
//
// Prepare Receivers ...
var receivers = new List<string> () {
request.CallerConnectionId,
rejecterConnectionId
}
.AsReadOnly ();
//
try {
//
Clients
.Clients (receivers)
.SendAsync (
XWebRTCAction.RejectCall.GetStringValue (),
request
)
.RunTask ();
//
return Task.FromResult (true);
} catch { }
//
return Task.FromResult (false);
}
/// <summary>
/// answer a call request ...
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
public Task<bool> AcceptCall (
string accepterConnectionId,
XWebRTCConnectionDto request
) {
//
// Validate Args ...
var isValid = IsWebRTCConnectionsExists (request)
.RunTask ();
var isAccepterInCallees = request
.IsInCallees (accepterConnectionId);
if (!isValid ||
!isAccepterInCallees ||
accepterConnectionId.IsNullOrEmpty ()
) {
return Task.FromResult (false);
}
//
// Add Or Update ...
AddOrUpdateWebRTCConnection (request)
.RunTask ();
//
// prepare recievers ...
var receivers = new List<string> () {
request.CallerConnectionId,
accepterConnectionId,
}
.AsReadOnly ();
//
try {
//
Clients
.Clients (receivers)
.SendAsync (
XWebRTCAction.AcceptCall.GetStringValue (),
request
)
.RunTask ();
//
return Task.FromResult (true);
} catch {
return Task.FromResult (false);
}
}
#endregion
//
#region WebRTC Signaling ...
/// <summary>
/// Send WebRTC Offer ...
/// </summary>
/// <param name="signal"></param>
/// <param name="request"></param>
/// <returns></returns>
public Task<bool> WebRTCOffer (
XWebRTCSignalDto signal,
XWebRTCConnectionDto request
) {
//
if (
signal.IsNull () ||
signal.Offer.IsNull () ||
!IsValidWebRTCConnection (request)
) {
return Task.FromResult (false);
}
//
var connectionId = GetConnectionId ();
var offerRecievers = request
.GetReceivers ()
.Where (r => r.ToNormalString () != connectionId.ToNormalString ())
.ToList ()
.AsReadOnly ();
//
try {
//
Clients
.Clients (offerRecievers)
.SendAsync (
XWebRTCAction.WebRTCOffer.GetStringValue (),
signal,
request
)
.RunTask ();
//
return Task.FromResult (true);
} catch {
return Task.FromResult (false);
}
}
/// <summary>
/// Send WebRTC Answer ...
/// </summary>
/// <param name="signal"></param>
/// <param name="request"></param>
/// <returns></returns>
public Task<bool> WebRTCAnswer (
XWebRTCSignalDto signal,
XWebRTCConnectionDto request
) {
//
if (
signal.IsNull () ||
signal.Offer.IsNull () ||
signal.Answer.IsNull () ||
!IsValidWebRTCConnection (request)
) {
return Task.FromResult (false);
}
//
var connectionId = GetConnectionId ();
var answerRecievers = request
.GetReceivers ()
.Where (r => r.ToNormalString () != connectionId.ToNormalString ())
.ToList ()
.AsReadOnly ();
//
try {
//
Clients
.Clients (answerRecievers)
.SendAsync (
XWebRTCAction.WebRTCAnswer.GetStringValue (),
signal,
request
)
.RunTask ();
//
return Task.FromResult (true);
} catch {
return Task.FromResult (false);
}
}
/// <summary>
/// Send WebRTC ICE Candidates ...
/// </summary>
/// <param name="signal"></param>
/// <param name="request"></param>
/// <returns></returns>
public Task<bool> WebRTCICECandidate (
XWebRTCSignalDto signal,
XWebRTCConnectionDto request
) {
//
if (
signal.IsNull () ||
signal.Offer.IsNull () ||
signal.Answer.IsNull () ||
!signal.Cadidates.HasChild () ||
!IsValidWebRTCConnection (request)
) {
return Task.FromResult (false);
}
//
var connectionId = GetConnectionId ();
var candidatesRecievers = request
.GetReceivers ()
.Where (r => r.ToNormalString () != connectionId.ToNormalString ())
.ToList ()
.AsReadOnly ();
//
try {
//
Clients
.Clients (candidatesRecievers)
.SendAsync (
XWebRTCAction.WebRTCICECandidate.GetStringValue (),
signal,
request
)
.RunTask ();
//
return Task.FromResult (true);
} catch {
return Task.FromResult (false);
}
}
#endregion
//
#region Protected ...
/// <summary>
/// create first time WebRTC connection by user name ...
/// </summary>
/// <param name="connectionType"></param>
/// <param name="calleeUser"></param>
/// <param name="calleeDevice"></param>
/// <returns></returns>
protected Task<XWebRTCConnectionDto> GetUserWebRTCConnection (
XCallType connectionType,
string calleeUser,
XDeviceDto calleeDevice
) {
//
// Validate Args ...
if (
calleeDevice.IsNull () ||
connectionType == XCallType.None ||
calleeUser.IsNullOrEmpty ()
) {
throw XException.InvalidArgs.ToException ();
}
//
var id = Guid.NewGuid ().ToString ();
//
var httpContext = Context.GetHttpContext ();
var deviceJson = httpContext.Request.Query["Option"].ToString ();
//
// Retrieve Caller Info ...
var callerConnectionId = Context.ConnectionId;
var callerUserName = Context?.User?.Identity?.Name;
var callerDevice = deviceJson.FromJSON<XDeviceDto> ();
//
// Retrieve Connection ...
var calleeConnection = connectionStore
.FindOne (c => c.User.ToNormalString () == calleeUser.ToNormalString ())
.RunTask ();
//
var result = new XWebRTCConnectionDto {
//
Id = id,
//
Payload = null,
Type = connectionType,
//
RequestTime = DateTime.UtcNow,
//
CallerUser = callerUserName,
CallerDevice = callerDevice,
CallerConnectionId = callerConnectionId,
//
Callees = new List<XWebRTCCalleeDto> {
new XWebRTCCalleeDto {
Device = calleeDevice,
User = calleeConnection.User,
ConnectionId = calleeConnection.Id,
}
}
};
//
return Task.FromResult (result);
}
/// <summary>
/// create first time WebRTC connection ...
/// </summary>
/// <param name="connectionType"></param>
/// <param name="calleeConnectionId"></param>
/// <param name="calleeDevice"></param>
/// <returns></returns>
protected Task<XWebRTCConnectionDto> GetWebRTCConnection (
XCallType connectionType,
string calleeConnectionId,
XDeviceDto calleeDevice
) {
//
// Validate Args ...
if (
calleeDevice.IsNull () ||
connectionType == XCallType.None ||
calleeConnectionId.IsNullOrEmpty ()
) {
throw XException.InvalidArgs.ToException ();
}
//
var id = Guid.NewGuid ().ToString ();
//
var httpContext = Context.GetHttpContext ();
var deviceJson = httpContext.Request.Query["Option"].ToString ();
//
// Retrieve Caller Info ...
var callerConnectionId = Context.ConnectionId;
var callerUserName = Context?.User?.Identity?.Name;
var callerDevice = deviceJson.FromJSON<XDeviceDto> ();
//
// Retrieve Connection ...
var calleeConnection = connectionStore
.GetByConnectionId (calleeConnectionId)
.RunTask ();
//
var result = new XWebRTCConnectionDto {
//
Id = id,
//
Payload = null,
Type = connectionType,
//
RequestTime = DateTime.UtcNow,
//
CallerUser = callerUserName,
CallerDevice = callerDevice,
CallerConnectionId = callerConnectionId,
//
Callees = new List<XWebRTCCalleeDto> {
new XWebRTCCalleeDto {
Device = calleeDevice,
User = calleeConnection.User,
ConnectionId = calleeConnectionId,
}
}
};
//
return Task.FromResult (result);
}
/// <summary>
/// Check i am caller or not ...
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
protected bool AmICaller (XWebRTCConnectionDto request) {
//
// Validate Args ...
if (!request.IsValid () ||
!IsValidWebRTCConnection (request)
) {
throw XException.InvalidArgs.ToException ();
}
//
var result = request.IsCaller (GetConnectionId ());
return result;
}
/// <summary>
/// Check i am callee or not ...
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
protected bool AmICallee (XWebRTCConnectionDto request) {
//
// Validate Args ...
if (!request.IsValid () ||
!IsValidWebRTCConnection (request)) {
throw XException.InvalidArgs.ToException ();
}
//
var result = request.IsInCallees (GetConnectionId ());
return result;
}
/// <summary>
/// validate a web rtc connection ...
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
protected bool IsValidWebRTCConnection (XWebRTCConnectionDto request) {
//
// Validate Args ...
if (
request.IsNull () ||
!request.IsValid () ||
!request.Callees.HasChild () ||
request.Type == XCallType.None ||
request.CallerConnectionId.IsNullOrEmpty ()
) {
return false;
}
//
return true;
}
/// <summary>
/// check bot Caller and Callee Connections Exists ...
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
protected Task<bool> IsWebRTCConnectionsExists (XWebRTCConnectionDto request) {
//
// Validate Args ...
if (!IsValidWebRTCConnection (request)) {
return Task.FromResult (false);
}
//
var isCallerConnectionExists = connectionStore
.IsExistsConnectionId (request.CallerConnectionId)
.RunTask ();
//
var isCalleesConnectionExists = !request.Callees.HasChild () ? true :
Task.WhenAll (request.Callees.Select (callee => connectionStore
.IsExistsConnectionId (callee.ConnectionId)))
.ContinueWith (allTasks => {
//
var allResults = allTasks
.RunTask ();
//
return allResults.All (r => r == true);
})
.RunTask ();
//
if (!isCallerConnectionExists || !isCalleesConnectionExists) {
return Task.FromResult (false);
}
//
return Task.FromResult (true);
}
/// <summary>
/// Add or Update a WebRTCConnection To/In Store ...
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
protected Task<bool> AddOrUpdateWebRTCConnection (XWebRTCConnectionDto request) {
//
if (!request.IsValid () ||
request.Id.IsNullOrEmpty ()
) {
return Task.FromResult (false);
}
//
// Check Exists or not ...
var isWebRTCConnectionExists = webRTCConnectionStore
.IsExistsByKey (request.Id)
.RunTask ();
//
// Act based on existance ...
if (!isWebRTCConnectionExists) {
return webRTCConnectionStore.Add (request);
} else {
//
var updated = webRTCConnectionStore.Update (request)
.RunTask ();
var isUpdate = !updated.IsNull ();
//
return Task.FromResult (isUpdate);
}
}
#endregion
}
}