eSeGeCe Blog
Release notes, deep dives, and tutorials for sgcWebSockets, sgcHTML, sgcOpenAPI, sgcSign, sgcBiometrics, and sgcIndy.
Four New sgcHTML Components, Five New Live Demos
sgcHTML adds CameraScanner, NumPad, CommandPalette and EmptyState, then puts all four to work in five brand new live demos: a Warehouse, a Point of Sale till, Reports & Analytics, a Multi-Tenant SaaS platform and Field Service…
Huobi and HTX: Fixing a Signature Timestamp That Only Failed Part of the Day
A Huobi and HTX signing defect mixed the local date with the UTC time, so a host running outside UTC had every private request fail for part of the day. It read as an intermittent authentication problem, and it was a two-line fix…
Kraken: Four Reliability Fixes in the WebSocket and Futures REST Clients
Four Kraken defects fixed in 2026.9: the spot WebSocket client was speaking v1 while connected to a v2 endpoint, Futures REST orders went out as GET with the signed body discarded, and private subscriptions never replayed after a reconnect…
sgcHTML Design Surface — Build Pages Visually, Not Just in Code
sgcWebSockets 2026.9.0 adds the sgcHTML Design Surface, so pages can be composed visually on a VCL form instead of only in code, using the exact same components and producing the exact same HTML…
AI Agent Skills for Delphi, C++Builder and .NET
Your AI assistant has never read the eSeGeCe source, so it invents properties that do not exist. Agent skills fix that, free and MIT licensed…
sgcCrypto: a New Cryptography Library for Delphi and C++ Builder
sgcCrypto is a new 43-unit cryptography library for Delphi and C++ Builder: AES-GCM, ChaCha20-Poly1305, SHA-3, Argon2, Ed25519, X.509 and post-quantum ML-KEM, ML-DSA and SLH-DSA, included free from sgcWebSockets Standard up…
sgcWebSockets 2026.8: QUIC, HTTP/3, Static OpenSSL and a TLS Overhaul
sgcWebSockets 2026.8 adds QUIC and HTTP/3 components, OpenSSL linked inside the executable, more than 30 new sgcHTML components, a rewritten SChannel TLS layer, zlib 1.3.1 and a CycloneDX SBOM…
sgcWebSockets now installs its own SBOM
The installer now produces a CycloneDX SBOM for the edition being packaged and installs it as sbom.cdx.json, so the file can never drift from the code it describes…
zlib 1.3.1 in sgcWebSockets and sgcOpenAPI
zlib moves from 1.2.12 to 1.3.1. Because zlib is linked statically, the update meant rebuilding three separate object sets and proving them on every supported compiler…
Binance Rate Limits in Delphi: Batching, Pacing and Readable 429s
Read Retry-After on an HTTP 429, subscribe a whole watchlist with one frame, and stop exchanges closing your connection after a reconnect…
sgcProtoBuf: From .proto Files to Delphi Units
sgcProtoBuf turns Protocol Buffers definitions into Delphi units, resolving imports recursively and generating one unit per package…
TsgcHTTPRESTServer: the New REST Server Component
TsgcHTTPRESTServer is a new HTTP server component for REST APIs, adding CORS, metrics and health endpoints and multi-tenancy on top of TsgcHTTPServer…
REST Server + OpenAPI: Contract-First APIs in Delphi
Attach the OpenAPI plugin to TsgcHTTPRESTServer and let one spec drive routing, validation, security and Swagger UI, with a single assignment as the whole wiring…
REST Server: Users, Multi-Tenancy and Metrics
A hashed user store wired into HTTP Basic, five ways to resolve a tenant per request, and Prometheus metrics with a health endpoint for TsgcHTTPRESTServer…
Static OpenSSL Linking in sgcWebSockets: No More libcrypto and libssl DLLs
OpenSSL can now be linked directly inside your sgcWebSockets executable instead of being loaded at runtime from libcrypto and libssl DLLs. Add one unit to the uses clause and there is nothing else to configure…
TCPKeepAlive and KeepAliveTimeout for IOCP and EPOLL Servers
sgcWebSockets adds TCPKeepAlive and KeepAliveTimeout to the IOCP and EPOLL server engines, closing connections whose peer silently disappeared instead of leaving them open forever…
HTTP/3 Client and Server Components for Delphi and C++ Builder
sgcQUIC brings HTTP/3 to Delphi and C++ Builder with TsgcHTTP3Client and TsgcHTTP3Server, running HTTP semantics over QUIC with QPACK header compression, every verb, async requests and Alt-Svc discovery…
QUIC Client and Server Components for Delphi and C++ Builder
sgcQUIC adds the QUIC transport protocol to Delphi and C++ Builder with TsgcQUICClient and TsgcQUICServer, built on the native OpenSSL 3.5 QUIC engine with TLS 1.3, multiplexed streams and 0-RTT…
Three New sgcHTML Admin Components: Presence, RolesPermissions and UserManagement
Three new sgcHTML admin components: Presence for a live who's-online roster, RolesPermissions for a grant matrix, and UserManagement for a full user administration table…
sgcHTML on WebBroker and DataSnap
Serve sgcHTML pages from any WebBroker application and from DataSnap servers, with live WebSocket updates on the same port as your DataSnap REST endpoints…
Six New sgcHTML Feedback Components: Badge, PDFViewer, ContextMenu, ProgressBar, JobProgress and LogViewer
Six new sgcHTML feedback and layout components: Badge, PDFViewer, ContextMenu, ProgressBar, JobProgress and LogViewer — telling a visitor what's happening right now…
Six New sgcHTML Form Inputs: MultiSelect, ColorPicker, Slider, TimePicker, SignaturePad and Transfer
Six new sgcHTML form components: MultiSelect, ColorPicker, Slider, TimePicker, SignaturePad and Transfer — the inputs a real admin form needs beyond a plain text box…
Integrating Third-Party JavaScript Libraries in sgcHTML
Drop D3.js, Chart.js, a DevExtreme Grid or any browser library into an sgcHTML page with three hooks, or wrap it in a reusable server-side component…
Six New sgcHTML Visuals: Heatmap, Sparkline, CandlestickChart, TreeMap, QRCode and Barcode
Six new sgcHTML visuals rendered as pure server-side SVG: Heatmap, Sparkline, CandlestickChart, TreeMap, QRCode and Barcode — no charting library, no client-side JavaScript…