APK+WebSocket source code repair and optimization list

@kamran2012

Hello there, I will fix your WebSocket source code — heartbeat mechanism, exponential backoff reconnection, ACK with message_id tracking, and zombie connection cleanup. I will also restructure the data and UI layers so network operations run in coroutines off the main thread, preventing ANR issues. For security, I will remove any hardcoded keys and enforce TLS + AES/RSA encryption with server-side key retrieval. Questions: 1) Is the APK built with Kotlin coroutines or Java threads currently? 2) Are you using Room for local message caching already? Ready to start whenever you are. Kamran

@rbtech1984

Hello There!!! ★★★★ ( Repairing and optimizing your APK + WebSocket for stability, security, and performance ) ★★★★ I understand you need your Android APK and WebSocket source code fixed for heartbeat, reconnection, ACK handling, offline caching, message encryption, and UI responsiveness, while optimizing performance and security. ⚜ WebSocket heartbeat & exponential backoff reconnection ⚜ ACK mechanism with message resend ⚜ Offline message caching & unified data repository ⚜ Business logic decoupled from network layer ⚜ UI using ViewModel/StateFlow; network off main thread ⚜ Encryption TLS + AES/RSA; secure token handling ⚜ Performance improvements with async message queue & memory leak prevention I have experience fixing WebSocket apps, optimizing APKs for concurrency, encryption, and multi-threaded data handling, ensuring stability and smooth UX. I’ll audit the source, implement fixes, optimize layers, and provide clean, secure, maintainable code. Warm Regards, Farhin B.

@mohjib092

Hi! I can fix and optimize your WebSocket system for real-time messaging, including heartbeat, reconnection, ACK flow, offline caching, and secure encryption (TLS + AES/RSA), ensuring high-speed, stable performance across all layers. I’ve handled similar high-concurrency projects and can deliver clean, production-ready code..

@techsty2014

Hi there, I will audit and fix your Android APK and WebSocket layer across all six areas — heartbeat and reconnection logic with exponential backoff, ACK mechanism with message deduplication, zombie connection cleanup, AES/RSA encryption with no hardcoded keys, and UI decoupling so network operations never block the main thread. For the reconnection and heartbeat, I will move both into dedicated coroutines with a state machine that tracks connection health independently — this prevents the common issue where a failed heartbeat triggers reconnection while a reconnection attempt is already in progress, which causes duplicate socket connections. Questions: 1) Is the current codebase in Kotlin or Java, and which WebSocket library is it using (OkHttp, Ktor, or custom)? 2) Do you have a test server environment I can use, or should I set up a local WebSocket mock for development? Looking forward to discussing further. Best regards, Faizan

@NEHABHAT92

I'm Neha, a seasoned professional with over 9+ years of experience in mobile app and website development. My expertise lies in Android and with a solid background in languages such as Java, PHP, and NET, I have the tools to handle any problems that might arise within your APK+WebSocket source code. The issues you've highlighted regarding hearbeat mechanisms, reconnection after disconnection, ACK mechanism, long connection management, and message encryption demand an astute developer's attention which I'm confident I can provide to your project. I've worked on similar projects before where optimizing code for better performance and stability has been my key focus. Therefore, handling your websocket and implementing various mechanisms will feel like a second nature to me. One of my biggest strengths is my ability to understand the deeper layers of a project in order to not only fix immediate problems but also devise strategies for long-term efficiency. With this mindset, I can assure you that all the layers of your project; Data Layer, Business Layer (Domain), UI Layer (Presentation), Security Layer will be tackled with equal diligence to ensure that all your requirements are met. Furthermore, my familiarity with using coroutines/threads for effective network operations handling will greatly enhance the overall stability and responsiveness of the APK. With E-commerce and CMS based websites in my portfolio, I have developed a unique abil

@arslanshahid386

Hi there, I've taken a careful look at your project and it seems you need a comprehensive overhaul of your APK and WebSocket code to improve its reliability and security. I would start by addressing the heartbeat mechanism and reconnection strategies to ensure smooth communication between the client and server. Implementing exponential backoff for reconnections will help lighten the load on your server. With 4+ years of experience in C, Java, and Android development, I've tackled similar optimization and security issues before. I can ensure that message encryption and storage solutions are robust, while also improving the overall data processing efficiency. One area I’d like to clarify is how you currently handle message ordering. Are there specific scenarios where you’ve noticed issues with out-of-order processing? Best regards, Arslan Shahid

@Cmonosoft

Hello there, I reviewed the requirements and this project clearly involves stabilizing and optimizing a real-time messaging architecture across multiple layers including network, data, business logic, UI, and security. I have strong experience working with WebSocket-based systems, Android networking, and scalable messaging architectures, so I can help diagnose the current issues and implement a stable long-connection solution. How I will proceed - First, I will audit the existing codebase to identify where connection handling, message processing, and thread management are causing instability. After the audit, I will implement fixes and architectural improvements to ensure the client remains stable even under poor network conditions or high message volume. Network Layer (WebSocket / Long Connection) - I will review the heartbeat implementation to ensure the client sends ping messages every 30 seconds and correctly handles pong responses from the server. If the interval logic is inconsistent or missing, I will implement a stable heartbeat scheduler. Data Layer - I will review how offline messages are cached to ensure that messages are preserved during disconnection and recovered correctly after reconnection. Looking forward to connect with you to detailed discussion. Thanks Saurabh

@Noorulamin331

Hello, I can help you stabilize and optimize your system across all layers with a clean, production-ready architecture. I have strong experience in real-time systems, WebSocket communication, and Android architecture, so I understand the importance of reliability, ordering, and performance in long-lived connections. I will refine your networking layer by implementing a robust heartbeat mechanism, exponential backoff reconnection, ACK-based delivery, and proper cleanup of zombie connections. I’ll also ensure encryption is correctly handled (TLS + secure key management) and remove any unsafe practices like hardcoded keys. On the data and business layers, I’ll introduce a structured repository pattern, reliable message queuing with ordering guarantees, safe parsing with exception handling, and proper authorization validation. Offline caching and recovery will be implemented to ensure no data loss during disconnections. For the UI layer, I’ll decouple all network operations using ViewModel with StateFlow/LiveData and coroutines, ensuring smooth, non-blocking user experience without ANRs. Finally, I’ll address performance and stability by moving all heavy operations off the main thread, preventing memory leaks, and ensuring the system scales under load. Ready to clean up, secure, and make your system fully stable and production-grade

@RadoslavPompura

As a seasoned software engineer with a strong background in both mobile and web development, I have exceptional skills that perfectly align with your APK+WebSocket repair and optimization needs. With hands-on experience in addressing various connectivity issues, implementing encryption mechanisms, and managing long connections to avoid memory leaks, I can effectively fix the heartbeating, re-connection, ACK, and encryption issues mentioned in your project description. Drawing from my extensive knowledge working with WebSocket client libraries and employing multi-threading approaches (coroutines/threads) to handle re-connections and heartbeatings independently of the UI, I guarantee not just fixes but an optimized WebSocket structure that ensures smooth application functioning even upon network disconnection or switching. Having built robust data processing systems in the past, I will make sure to resolve the offline message caching problem, deliver secure and conflict-free local storage using Room or SharedPreferences, and ensure ordered message processing to avoid business logic errors. My proficiency in employing a unified repository model for centralized management of all data sources will also prove valuable in streamlining your data layer as per your optimization suggestions.

@ffulb

Your WebSocket heartbeat and reconnection issues sound like classic Android connection management problems. I'd tackle this by implementing proper coroutine-based heartbeat handling, exponential backoff reconnection logic, and a message ACK system with unique IDs. The encryption audit and zombie connection cleanup are straightforward once I can review your current implementation. I built a similar real-time system for an automated trading platform that needed bulletproof WebSocket connections and message ordering - handled 76 trades with zero missed messages. Also set up complete server infrastructure for mission-critical applications that needed rock-solid uptime. You can check out my work at ffulb.com. If you can share the existing APK and WebSocket source code, I can assess the current setup and get the fixes rolling. Ready to start once I take a look at what you're working with.

@jagratip3

Hi, I’ve reviewed your architecture notes, and this is exactly the kind of real-time, stability-critical system I specialize in. I can help you harden your WebSocket stack end-to-end—eliminating drops, duplicates, ANRs, and security risks. My Approach: 1. Network Layer (Core Fixes) Implement robust heartbeat + timeout detection Add exponential backoff reconnection (1→2→5→10s) Reliable ACK + retry system with message_id tracking Centralized WebSocket manager (thread-safe, lifecycle-aware) Detect & clean zombie connections to prevent leaks 2. Data Layer Offline caching with recovery after reconnect Ordered message queue processing (no duplication/out-of-order) Secure local storage + conflict-safe writes Repository pattern for unified data flow 3. Business Layer Safe parsing (JSON/Proto) with full exception handling Strict auth/token validation Reliable ACK logic to prevent message loss 4. UI Layer Migrate to ViewModel + StateFlow/LiveData All network ops in coroutines (no ANR risk) Smooth, reactive UI updates 5. Security & Performance TLS + AES/RSA encryption (no plaintext) Remove hardcoded keys, enable ProGuard/R8 Async processing + scalable backend (Redis/Kafka ready) I focus on stability, low latency, and crash-free real-time systems. Ready to start immediately and optimize your system fast.

@adisonw

Dear Sir, I am thrilled to bid your project. This is a strong fit for me because your scope is not just bug fixing, but a full stability and architecture hardening pass across WebSocket communication, offline data handling, business logic safety, UI responsiveness, and APK security. I have experience with real-time messaging systems, reconnection strategies, ACK-based delivery, coroutine/thread management, local caching, and performance tuning on Android applications where stability under poor networks is critical. For your project, I would review the current implementation layer by layer, fix heartbeat/reconnect/ACK logic, harden long-connection cleanup, secure message transport and key handling, and restructure data/message flow so offline recovery and ordered processing behave reliably. I would also isolate UI from network operations, improve state handling with ViewModel/LiveData or StateFlow, and add proper exception logging so parsing or authorization failures do not crash the app. On the server side, I can also help align the client behavior with scalable message delivery patterns and high-concurrency buffering strategies. One crucial question: is your current codebase native Android in Java/Kotlin only, or does the real-time layer also depend on JNI, Flutter, or another cross-platform wrapper that I should account for before refactoring? Sincerely, Adison.

@usmansipra264

Hello, I understand the critical importance of ensuring robust connection management and data integrity in your application. With a focus on optimizing WebSocket interactions and enhancing security protocols, I will utilize technologies like Node.js for server-side logic and React for the client interface. Here is what I will deliver: - A refined heartbeat mechanism and exponential backoff for reconnections to improve server communication. - An encapsulated WebSocket client library to centralize network operations and enhance performance. - Clean code practices with thorough logging to prevent crashes and ensure maintainability. I can confidently complete this within your budget and timeline, and I will keep you updated throughout the process. Could you share more about the current data storage methods you're using for message caching? Best regards

@vasylklymiu

Hi, I just applied after read your job posting carefully and I believe that I am good fit to your project. I have thoroughly reviewed your requirements and I am confident in my ability to deliver excellent results. I'm a serious bidder. I will satisfy you with my high skills! I am an expert which have 8+ years of experience on C Programming, Java, Linux, Android, C++ Programming, Encryption, Security, Application Performance Monitoring, API Development, Data Management I will work on your project hard with full time. I am looking forward to meet you to discuss the further detail about this project. Looking forward to hearing from you. Warm Regards

@Sadiyasyeda24

I saw your project and am confident I can deliver on this. I'm currently working on a similar project and understand the importance of fixing the Heartbeat Mechanism, implementing Reconnection After Disconnection with exponential backoff, ensuring the ACK Mechanism works efficiently, managing Long Connection issues, and enhancing Message Encryption. By analyzing the project details, it's evident that optimizing these areas will significantly improve the APK's performance and stability, ensuring seamless communication and data security. I invite you to view my portfolio, which showcases the quality and results of my past work. I look forward to hearing from you. Regards, Sadiya

@AdriaanP

I understand your need to fix and optimize WebSocket communication comprehensively, covering heartbeat mechanisms, reconnection strategies, ACK protocols, secure encryption (AES/RSA + TLS), and managing long connections to prevent memory leaks. I will also enhance data caching with unified repositories and interfaces, ensure ordered message processing, decouple business logic, and improve UI responsiveness using ViewModel and coroutines. Since I am new to freelancer, I would like to extend a special offer to you at a discounted rate of 15%. Based on what I know about your needs, I believe that we would work incredibly well together. However, please note that this offer will only be valid until the end of the day. Are you tired of struggling with freelancers who doesn't communicate throughout the project, don't keep you updated, miss deadlines and has excuses for why projects are behind schedule or not exactly how you want it? If so, reach out to me. Regards, Adriaan Potgieter.