From sgcWebSockets 4.5.3, the openSSL 3.0 libraries are supported for the following compilers: Delphi 7 - Rad Studio 11 Windows 32/64OSX 64Android 32/64iOS 64Linux 64.NETWindows 32/64 OpenSSL 3.0  OpenSSL it's a major release with several internal changes, but it doesn't offers several advantages over 1.1 The openSSL libraries have been rename...

sgcWebSockets Pusher client has been improved on 4.5.3 version, the HTTP API has been implemented allowing to trigger events, get users of a channel and get a list of channels. Pusher is a hosted WebSockets solution for building powerful realtime interactive apps. The sgcWebSockets client allows to use the following pusher channels: Public Channels...

DevExtreme Data Grid, from DevExpress, it's a powerful Data Grid for Javascript. One of the features it's partial updates which allows to update a record of a grid without updating the full page. Usually the update is received using WebSocket protocol. sgcWebSockets library can be used with DevExtreme Data Grid, allowing to update the Grid in Real-...

From sgcWebSockets 4.5.1 SChannel has been improved with 2 new features: 1. There is a new property in TLSOptions.SChannel_Options called CipherList where you can set which Ciphers will be used. 2. There is a new function called GetInfo which returns the info like Protocol used (TLS1.2, TLS1.1...), the cipher, cipher strength... and more Cipher Lis...

Telegram API allows to get information about members of a SuperGroup. Use the method GetSuperGroupMembers to get information about members or banned users in a supergroup or channel. Can be used only if SupergroupFullInfo.can_get_members is true; additionally, administrator privileges may be required for some filters. By default the method returns ...

When a client initiates a disconnection from server, there is an exchange between client and server to inform about the state of disconnection. When the process is finished, the client socket connection states as TIME_WAIT during a variable time. This is a normal behavior, in windows operating systems, this time defaults to about 4 minutes. You can...

In the latest entry blog about Apple Push Notifications, I show how use certificates to authenticate against Apple Push Servers. First enter in your developer account and create a new certificate for Apple Push Notification service Once you have downloaded your certificate, the sgcWebSockets HTTP/2 client allows to use 2 security IOHandlers (only f...

In this blog I will show how configure the sgcWebSockets JWT Client to send authenticated HTTP/2 requests to Apple Push Notification Servers. Secure your communications with Apple Push Notification service (APNs) by using stateless authentication Tokens. First you must obtain an Encryption Key and a Key ID from Apple Developer Account. Once a ...

In the previous blog, I show how retrieve a device token, now I will show how use the HTTP/2 sgcWebSockets client to send a notification (without the authentication part). Send your remote notification payload and device token information to Apple Push Notification service (APNs). How Connect to APNs You must use HTTP/2 protocol and at least TLS 1....

sgcWebSockets library supports HTTP/2 protocol on Server and Client side components, Apple Push Notifications only allows to send Push Notifications from a Server Provider using HTTP/2 protocol, so in the following articles I will show how send push notifications using sgcWebSockets library. The Server Provider (who sends the push notifications to ...

OAuth2 Client Component now supports Client Credentials as grant type, this type of grant is commonly used for server-to-server interactions that must run in the background, without immediate interaction with a user. These types of applications are often referred to as daemons or service accounts. OAuth2 Flow Client Credentials  Azure OAuth2 G...

sgcWebSockets Servers allow to Post Big Files without affecting the server memory.  When a HTTP client sends a multipart/form-data stream, the stream is saved by server in memory. When the files are big, the server can get an out of memory exception, to avoid these exceptions, the server has a property called HTTPUploadFiles where you can conf...

From sgcWebSockets 4.4.8 there are small modifications in library to improve security of connections. One of them is Perfect Forward Secrecy When you use the RSA key exchange mechanism, it creates a link between the server's key pair and the session key created for each unique secure session. Thus, if an attacker is ever able to get hold ...

From sgcWebSockets 4.4.8 the Log of websocket messages has been improved. Till now, the messages were saved as was sent/received by socket, this means that when a websocket message was sent by websocket client, this was first masked and then saved to log. As the message was masked, it can't be read easily so the log was useless for the websock...

From sgcWebSockets 4.4.7 the use of Certificates using SChannel as crypto library is supported. The SChannel implementation supports 2 types of certificate authentication: 1. Using a PFX certificate 2. Setting the Hash Thumbprint of an already installed certificate in the windows system. PFX Certificate  PFX Certificate is a file that con...

From sgcWebSockets 4.4.7, both Binance Futures APIs are supported: USDT and COIN. USD Futures: https://binance-docs.github.io/apidocs/futures/en COIN Futures: https://binance-docs.github.io/apidocs/delivery/en Configuration  Client can connect to USDT or COIN Binance Futures, set which contract you want to trade using FuturesCon...

When you log as bot, the GetChats method cannot be used, so you don't get All available chats. If it's the first time you login as Bot and you try to send a message to a known Chat, you will get this error: {"@type":"error","code":5,"message":"Chat not found"} The solution is before send a telegram message, call GetChat method and pass the ChatId a...

Telegram client has been improved with a new method, SendRichTextMessages, which supports the use of styles like: bold, italic, underline, strike and code. The use is very simple, if you want send a text in bold, just use the following notation: This is a **bold** text. Markdown Syntax  Bold [ * ] **This is bold message** Italic [ _ ] __T...

sgcWebSockets library supports OAuth2 Authentication in Server and Client components, next version will include a new feature required by AWS Cognito service, when you try to authenticate using OAuth2 with Cognito, the service requires that the Server listens on a Secure port, so now OAuth2 Client component can use SSL/TLS encryption layer. The Loc...

The Alt-Svc HTTP header is used to inform the clients that the same resource can be reached from another service or protocol, this is useful if you want inform the HTTP clients that your server supports HTTP/2 for example. Example: if your server is running on a local IP 127.0.0.1 and is listening on 2 ports: 80 (non encrypted) and 443 (encrypted)....