From 26ffeb30928901919051d088d9d2858ae244aac5 Mon Sep 17 00:00:00 2001
From: Sunil Purushottam Thakare <sunil@thakares.com>
Date: Sat, 24 May 2025 23:11:49 +0530
Subject: [PATCH 1/7] Update Algorithm & Flowchart.md

---
 Algorithm & Flowchart.md | 235 ++++++++++++++++++++++-----------------
 1 file changed, 131 insertions(+), 104 deletions(-)

diff --git a/Algorithm & Flowchart.md b/Algorithm & Flowchart.md
index fc9f5b9..98f2644 100644
--- a/Algorithm & Flowchart.md	
+++ b/Algorithm & Flowchart.md	
@@ -1,119 +1,146 @@
-## DNS Server Algorithm
 
-**1. Server Initialization**
+# DNS Server Algorithm & Flowchart
 
-```rust
-1.1 Load configuration from environment variables
-1.2 Initialize logging system
-1.3 Create SQLite database connection
-1.4 Initialize cache with NS records
-1.5 Start periodic cache cleanup task
-1.6 Bind UDP and TCP sockets on specified port
-```
+This document outlines the algorithm and flowchart for a DNS server implementation compliant with RFC 1035 (DNS) and RFC 4034 (DNSSEC).
 
-**2. Query Handling Flow**
+---
+
+## ✅ Server Algorithm
+
+### 1. Server Initialization
+
+1. Load configuration from environment variables.
+2. Initialize the logging system.
+3. Create SQLite database connection and initialize schema.
+4. Initialize cache with NS records.
+5. Start periodic cache cleanup task (every 5 minutes).
+6. Bind and listen on UDP and TCP sockets.
+
+### 2. Query Handling Flow
+
+#### Upon Receiving a DNS Query:
+
+1. Validate DNS query packet.
+2. Parse header and extract domain name and query type.
+3. If query type is `DNSKEY` or `DS`, return signed records.
+4. Check DNS cache:
+    - If **hit**, build and return response.
+    - If **miss**, lookup in database:
+        - If found, respond and cache it.
+        - If not found:
+            - If authoritative, return `NXDOMAIN`.
+            - Else, forward to upstream resolvers.
+5. Add DNSSEC signatures if applicable.
+6. Send response to the client.
+
+### 3. DNSSEC Signing Process
+
+1. Load DNSSEC key from configured file.
+2. For each relevant record:
+    - Generate `RRSIG`.
+    - Encode signature (Base64).
+    - Calculate key tag and signature expiration.
+3. Add `RRSIG` to the answer section.
+4. Include `DNSKEY` in the authority section if needed.
+
+### 4. Response Generation Logic
+
+1. Construct response header:
+    - Set QR flag and response code.
+    - Include Authoritative Answer (AA) if authoritative.
+2. Attach original question section.
+3. Populate:
+    - **Answer** section: with resolved records.
+    - **Authority** section: with NS and DS records.
+    - **Additional** section: with glue records, DNSKEY if required.
+
+---
+
+## 📊 Flowchart
+![Flowchart](Flow-Chart.png)
+Below is the visual representation of the DNS query handling logic:
 
-```
-                    Start
-                      │
-                      ▼
-               Receive DNS Query
-                      │
-                      ▼
-            Parse Query Header/Question
-                      │
-                      ▼
-          Check Cache for Domain Record
-              ┌───────┴───────┐
-              ▼               ▼
-         Cache Hit      Cache Miss
-              │               │
-              ▼               ▼
-       Build Response    Query Database
-                              │
-                              ▼
-                   Check Authoritative Flag
-                      ┌────────┴────────┐
-                      ▼                 ▼
-                Record Found      Record Not Found
-                      │                 │
-                      ▼                 ▼
-               Build Response    Forward to Resolvers
-                      │                 │
-                      ▼                 ▼
-                  Add DNSSEC           ▼
-                 Signatures       Receive Forwarded Response
-                      │                 │
-                      ▼                 ▼
-               Send Response to Client
-                      │
-                      ▼
-                     End
 ```
 
-**3. DNSSEC Signing Process**
++---------------------+
+|   Start DNS Server  |
++---------------------+
+           |
+           v
++---------------------+
+|  Receive DNS Query  |
++---------------------+
+           |
+           v
++---------------------+
+| Parse Header and    |
+| Extract Domain &    |
+| Query Type          |
++---------------------+
+           |
+           +---------------------+
+           |                     |
+           v                     v
++---------------------+  +---------------------+
+| Is Query Type       |  | Use Cache           |
+| DNSKEY/DS?          |  |                     |
++---------------------+  +---------------------+
+           |                     |
+    Yes    |                     |
+           v                     v
++---------------------+  +---------------------+
+| Return              |  | Lookup in SQLite DB |
+| DNSSEC Record       |  |                     |
++---------------------+  +---------------------+
+                                   |
+                                   v
+                        +---------------------+
+                        | Is Authoritative    |
+                        | Zone?               |
+                        +---------------------+
+                                   |
+                            No     |
+                                   v
+                        +---------------------+
+                        | Return NXDOMAIN     |
+                        +---------------------+
+                                   |
+                                   v
+                        +---------------------+
+                        | Add GSSEC           |
+                        +---------------------+
+                                   |
+                                   v
+                        +---------------------+
+                        | Send Response       |
+                        +---------------------+
+                                   |
+                                   v
+                        +---------------------+
+                        | End                 |
+                        +---------------------+
 
-```rust
-3.1 Load DNSSEC key from configured file
-3.2 For each relevant DNS record:
-    3.2.1 Generate RRSIG record
-    3.2.2 Encode signature using Base64
-    3.2.3 Calculate key tag and signature expiration
-3.3 Add RRSIG records to DNS response
-3.4 Include DNSKEY records in authority section
-```
-
-**4. Response Generation Logic**
-
-```
-4.1 Create response header with:
-    - Original query ID
-    - QR flag set to response
-    - Authoritative Answer flag
-    - Appropriate response code (NOERROR/NXDOMAIN)
-    
-4.2 Add original question section
-
-4.3 Populate answer section with:
-    - Resource records from cache/database
-    - TTL values from configuration
-    
-4.4 Add authority section with:
-    - NS records
-    - DS records for DNSSEC
-    
-4.5 Include additional section with:
-    - A records for NS names
-    - DNSKEY records when applicable
 ```
 
 
-## Key Data Flow Components
+## 🧩 Key Components
 
-| Component | Purpose | Implementation Details |
-| :-- | :-- | :-- |
-| `DnsCache` | Response caching | Mutex-protected HashMap with TTL |
-| `ServerConfig` | Runtime configuration | Environment variables parsing |
-| `rusqlite` | Persistent storage | SQLite database with DNS records |
-| `tokio` | Async I/O handling | UDP/TCP listeners with task spawning |
-| `DNSSEC` | Response signing | RSA-SHA256 with preloaded keys |
+| Component      | Purpose                    | Details                                  |
+|----------------|----------------------------|------------------------------------------|
+| `DnsCache`     | DNS Response Cache         | Thread-safe HashMap with TTL             |
+| `ServerConfig` | Server Configuration       | Loaded via environment variables         |
+| `rusqlite`     | Record Storage             | SQLite database backend                  |
+| `tokio`        | Async I/O Runtime          | UDP/TCP async handlers and tasks         |
+| `DNSSEC`       | Secure DNS Signing         | RSA-SHA256 with Base64-encoded keys      |
 
-## Error Handling Strategy
+---
 
-```rust
-- Use custom DnsError enum with thiserror crate
-- Graceful shutdown on SIGINT
-- Automatic cache cleanup every 5 minutes
-- Fallback to forwarding when local resolution fails
-- Comprehensive logging at all stages
-```
+## ⚠️ Error Handling Strategy
 
-The server implements RFC 1035 (DNS) and RFC 4034 (DNSSEC) specifications with a focus on:
+- Custom `DnsError` enum via `thiserror`
+- Graceful shutdown via `SIGINT`
+- Cache cleanup every 5 minutes
+- Fallback to resolver forwarding
+- Detailed logging at every stage
 
-1. Async I/O using Tokio runtime
-2. Thread-safe caching with atomic reference counting
-3. Configurable forwarding and fallback mechanisms
-4. DNSSEC signing capability for authoritative responses
-5. SQLite-based record storage with schema versioning
-
-<div style="text-align: center">⁂</div>
+---

From cb65b8c89b0b86024322d9e47add855ade307c99 Mon Sep 17 00:00:00 2001
From: Sunil Purushottam Thakare <sunil@thakares.com>
Date: Sat, 24 May 2025 23:12:15 +0530
Subject: [PATCH 2/7] Delete Algorithm-Flowchart.md

---
 Algorithm-Flowchart.md | 172 -----------------------------------------
 1 file changed, 172 deletions(-)
 delete mode 100644 Algorithm-Flowchart.md

diff --git a/Algorithm-Flowchart.md b/Algorithm-Flowchart.md
deleted file mode 100644
index e2e92f3..0000000
--- a/Algorithm-Flowchart.md
+++ /dev/null
@@ -1,172 +0,0 @@
-
-# DNS Server Algorithm & Flowchart
-
-This document outlines the algorithm and flowchart for a DNS server implementation compliant with RFC 1035 (DNS) and RFC 4034 (DNSSEC).
-
----
-
-## ✅ Server Algorithm
-
-### 1. Server Initialization
-
-1. Load configuration from environment variables.
-2. Initialize the logging system.
-3. Create SQLite database connection and initialize schema.
-4. Initialize cache with NS records.
-5. Start periodic cache cleanup task (every 5 minutes).
-6. Bind and listen on UDP and TCP sockets.
-
-### 2. Query Handling Flow
-
-#### Upon Receiving a DNS Query:
-
-1. Validate DNS query packet.
-2. Parse header and extract domain name and query type.
-3. If query type is `DNSKEY` or `DS`, return signed records.
-4. Check DNS cache:
-    - If **hit**, build and return response.
-    - If **miss**, lookup in database:
-        - If found, respond and cache it.
-        - If not found:
-            - If authoritative, return `NXDOMAIN`.
-            - Else, forward to upstream resolvers.
-5. Add DNSSEC signatures if applicable.
-6. Send response to the client.
-
-### 3. DNSSEC Signing Process
-
-1. Load DNSSEC key from configured file.
-2. For each relevant record:
-    - Generate `RRSIG`.
-    - Encode signature (Base64).
-    - Calculate key tag and signature expiration.
-3. Add `RRSIG` to the answer section.
-4. Include `DNSKEY` in the authority section if needed.
-
-### 4. Response Generation Logic
-
-1. Construct response header:
-    - Set QR flag and response code.
-    - Include Authoritative Answer (AA) if authoritative.
-2. Attach original question section.
-3. Populate:
-    - **Answer** section: with resolved records.
-    - **Authority** section: with NS and DS records.
-    - **Additional** section: with glue records, DNSKEY if required.
-
----
-
-## 📊 Flowchart
-
-Below is the visual representation of the DNS query handling logic:
-
-```
-
-+---------------------+
-|   Start DNS Server  |
-+---------------------+
-           |
-           v
-+---------------------+
-|  Receive DNS Query  |
-+---------------------+
-           |
-           v
-+---------------------+
-| Parse Header and    |
-| Extract Domain &    |
-| Query Type          |
-+---------------------+
-           |
-           +---------------------+
-           |                     |
-           v                     v
-+---------------------+  +---------------------+
-| Is Query Type       |  | Use Cache           |
-| DNSKEY/DS?          |  |                     |
-+---------------------+  +---------------------+
-           |                     |
-    Yes    |                     |
-           v                     v
-+---------------------+  +---------------------+
-| Return              |  | Lookup in SQLite DB |
-| DNSSEC Record       |  |                     |
-+---------------------+  +---------------------+
-                                   |
-                                   v
-                        +---------------------+
-                        | Is Authoritative    |
-                        | Zone?               |
-                        +---------------------+
-                                   |
-                            No     |
-                                   v
-                        +---------------------+
-                        | Return NXDOMAIN     |
-                        +---------------------+
-                                   |
-                                   v
-                        +---------------------+
-                        | Add GSSEC           |
-                        +---------------------+
-                                   |
-                                   v
-                        +---------------------+
-                        | Send Response       |
-                        +---------------------+
-                                   |
-                                   v
-                        +---------------------+
-                        | End                |
-                        +---------------------+
-
-```
-
-
-## 🧩 Key Components
-
-| Component      | Purpose                    | Details                                  |
-|----------------|----------------------------|------------------------------------------|
-| `DnsCache`     | DNS Response Cache         | Thread-safe HashMap with TTL             |
-| `ServerConfig` | Server Configuration       | Loaded via environment variables         |
-| `rusqlite`     | Record Storage             | SQLite database backend                  |
-| `tokio`        | Async I/O Runtime          | UDP/TCP async handlers and tasks         |
-| `DNSSEC`       | Secure DNS Signing         | RSA-SHA256 with Base64-encoded keys      |
-
----
-
-## ⚠️ Error Handling Strategy
-
-- Custom `DnsError` enum via `thiserror`
-- Graceful shutdown via `SIGINT`
-- Cache cleanup every 5 minutes
-- Fallback to resolver forwarding
-- Detailed logging at every stage
-
----
-## API Reference
-
-#### Get all items
-
-```http
-  GET /api/items
-```
-
-| Parameter | Type     | Description                |
-| :-------- | :------- | :------------------------- |
-| `api_key` | `string` | **Required**. Your API key |
-
-#### Get item
-
-```http
-  GET /api/items/${id}
-```
-
-| Parameter | Type     | Description                       |
-| :-------- | :------- | :-------------------------------- |
-| `id`      | `string` | **Required**. Id of item to fetch |
-
-#### add(num1, num2)
-
-Takes two numbers and returns the sum.
-

From b91a0ebcca592eb7cb5f452f7c24f926cf3132c4 Mon Sep 17 00:00:00 2001
From: Sunil Purushottam Thakare <sunil@thakares.com>
Date: Sat, 24 May 2025 23:13:01 +0530
Subject: [PATCH 3/7] Delete README.txt

---
 README.txt | 14 --------------
 1 file changed, 14 deletions(-)
 delete mode 100644 README.txt

diff --git a/README.txt b/README.txt
deleted file mode 100644
index 4b4b8fb..0000000
--- a/README.txt
+++ /dev/null
@@ -1,14 +0,0 @@
-sudo chmod +x /var/dns-server/preprocess-key.sh
-sudo -u dnsuser /var/dns-server/preprocess-key.sh
-sudo chown dnsuser:dnsuser /var/dns-server/soa-update.sh
-sudo chmod +x /var/dns-server/soa-update.sh
-sudo -u dnsuser /var/dns-server/soa-update.sh
-sudo cat /var/dns-server/processed.key  # Verify output format
-sudo systemctl stop dns-server.service
-sudo cp /home/sunil/apps/bzo-ddns/dns_server /var/dns-server/dns_server
-sudo chown dnsuser:dnsuser /var/dns-server
-sudo systemctl daemon-reload
-sudo systemctl restart dns-server.service
-sudo systemctl status dns-server.service
-
-

From 8271dc27dc7af8f87b9fbb8fd2ab88438daba4a4 Mon Sep 17 00:00:00 2001
From: Sunil Purushottam Thakare <sunil@thakares.com>
Date: Sat, 24 May 2025 23:13:55 +0530
Subject: [PATCH 4/7] Add files via upload

---
 Algorithm-Flowchart.md | 146 +++++++++
 CODE_OF_CONDUCT.md     | 128 ++++++++
 Cargo.toml             |  23 +-
 Dockerfile             |  57 ++++
 LICENSE                | 674 +++++++++++++++++++++++++++++++++++++++++
 README.md              |   2 +-
 deploy-dns-server.sh   |  35 +++
 deploy.sh              |   6 +-
 dns_records.sql        |  26 +-
 dns_server.service     |  16 +-
 dns_wrapper.sh         |  22 ++
 dnscheck.sh            |   4 +-
 docker-compose.yml     |  24 ++
 preprocess-key.sh      |  26 ++
 soa-update.sh          |  17 ++
 start.sh               |  13 +
 16 files changed, 1183 insertions(+), 36 deletions(-)
 create mode 100644 Algorithm-Flowchart.md
 create mode 100644 CODE_OF_CONDUCT.md
 create mode 100644 Dockerfile
 create mode 100644 LICENSE
 create mode 100644 deploy-dns-server.sh
 create mode 100644 dns_wrapper.sh
 create mode 100644 docker-compose.yml
 create mode 100644 preprocess-key.sh
 create mode 100644 soa-update.sh
 create mode 100644 start.sh

diff --git a/Algorithm-Flowchart.md b/Algorithm-Flowchart.md
new file mode 100644
index 0000000..727673e
--- /dev/null
+++ b/Algorithm-Flowchart.md
@@ -0,0 +1,146 @@
+
+# DNS Server Algorithm & Flowchart
+
+This document outlines the algorithm and flowchart for a DNS server implementation compliant with RFC 1035 (DNS) and RFC 4034 (DNSSEC).
+
+---
+
+## ✅ Server Algorithm
+
+### 1. Server Initialization
+
+1. Load configuration from environment variables.
+2. Initialize the logging system.
+3. Create SQLite database connection and initialize schema.
+4. Initialize cache with NS records.
+5. Start periodic cache cleanup task (every 5 minutes).
+6. Bind and listen on UDP and TCP sockets.
+
+### 2. Query Handling Flow
+
+#### Upon Receiving a DNS Query:
+
+1. Validate DNS query packet.
+2. Parse header and extract domain name and query type.
+3. If query type is `DNSKEY` or `DS`, return signed records.
+4. Check DNS cache:
+    - If **hit**, build and return response.
+    - If **miss**, lookup in database:
+        - If found, respond and cache it.
+        - If not found:
+            - If authoritative, return `NXDOMAIN`.
+            - Else, forward to upstream resolvers.
+5. Add DNSSEC signatures if applicable.
+6. Send response to the client.
+
+### 3. DNSSEC Signing Process
+
+1. Load DNSSEC key from configured file.
+2. For each relevant record:
+    - Generate `RRSIG`.
+    - Encode signature (Base64).
+    - Calculate key tag and signature expiration.
+3. Add `RRSIG` to the answer section.
+4. Include `DNSKEY` in the authority section if needed.
+
+### 4. Response Generation Logic
+
+1. Construct response header:
+    - Set QR flag and response code.
+    - Include Authoritative Answer (AA) if authoritative.
+2. Attach original question section.
+3. Populate:
+    - **Answer** section: with resolved records.
+    - **Authority** section: with NS and DS records.
+    - **Additional** section: with glue records, DNSKEY if required.
+
+---
+
+## 📊 Flowchart
+![Flowchart](flow-chart.png)
+Below is the visual representation of the DNS query handling logic:
+
+```
+
++---------------------+
+|   Start DNS Server  |
++---------------------+
+           |
+           v
++---------------------+
+|  Receive DNS Query  |
++---------------------+
+           |
+           v
++---------------------+
+| Parse Header and    |
+| Extract Domain &    |
+| Query Type          |
++---------------------+
+           |
+           +---------------------+
+           |                     |
+           v                     v
++---------------------+  +---------------------+
+| Is Query Type       |  | Use Cache           |
+| DNSKEY/DS?          |  |                     |
++---------------------+  +---------------------+
+           |                     |
+    Yes    |                     |
+           v                     v
++---------------------+  +---------------------+
+| Return              |  | Lookup in SQLite DB |
+| DNSSEC Record       |  |                     |
++---------------------+  +---------------------+
+                                   |
+                                   v
+                        +---------------------+
+                        | Is Authoritative    |
+                        | Zone?               |
+                        +---------------------+
+                                   |
+                            No     |
+                                   v
+                        +---------------------+
+                        | Return NXDOMAIN     |
+                        +---------------------+
+                                   |
+                                   v
+                        +---------------------+
+                        | Add GSSEC           |
+                        +---------------------+
+                                   |
+                                   v
+                        +---------------------+
+                        | Send Response       |
+                        +---------------------+
+                                   |
+                                   v
+                        +---------------------+
+                        | End                 |
+                        +---------------------+
+
+```
+
+
+## 🧩 Key Components
+
+| Component      | Purpose                    | Details                                  |
+|----------------|----------------------------|------------------------------------------|
+| `DnsCache`     | DNS Response Cache         | Thread-safe HashMap with TTL             |
+| `ServerConfig` | Server Configuration       | Loaded via environment variables         |
+| `rusqlite`     | Record Storage             | SQLite database backend                  |
+| `tokio`        | Async I/O Runtime          | UDP/TCP async handlers and tasks         |
+| `DNSSEC`       | Secure DNS Signing         | RSA-SHA256 with Base64-encoded keys      |
+
+---
+
+## ⚠️ Error Handling Strategy
+
+- Custom `DnsError` enum via `thiserror`
+- Graceful shutdown via `SIGINT`
+- Cache cleanup every 5 minutes
+- Fallback to resolver forwarding
+- Detailed logging at every stage
+
+---
diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md
new file mode 100644
index 0000000..c340ed8
--- /dev/null
+++ b/CODE_OF_CONDUCT.md
@@ -0,0 +1,128 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+We as members, contributors, and leaders pledge to make participation in our
+community a harassment-free experience for everyone, regardless of age, body
+size, visible or invisible disability, ethnicity, sex characteristics, gender
+identity and expression, level of experience, education, socio-economic status,
+nationality, personal appearance, race, religion, or sexual identity
+and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming,
+diverse, inclusive, and healthy community.
+
+## Our Standards
+
+Examples of behavior that contributes to a positive environment for our
+community include:
+
+* Demonstrating empathy and kindness toward other people
+* Being respectful of differing opinions, viewpoints, and experiences
+* Giving and gracefully accepting constructive feedback
+* Accepting responsibility and apologizing to those affected by our mistakes,
+  and learning from the experience
+* Focusing on what is best not just for us as individuals, but for the
+  overall community
+
+Examples of unacceptable behavior include:
+
+* The use of sexualized language or imagery, and sexual attention or
+  advances of any kind
+* Trolling, insulting or derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or email
+  address, without their explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Enforcement Responsibilities
+
+Community leaders are responsible for clarifying and enforcing our standards of
+acceptable behavior and will take appropriate and fair corrective action in
+response to any behavior that they deem inappropriate, threatening, offensive,
+or harmful.
+
+Community leaders have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are
+not aligned to this Code of Conduct, and will communicate reasons for moderation
+decisions when appropriate.
+
+## Scope
+
+This Code of Conduct applies within all community spaces, and also applies when
+an individual is officially representing the community in public spaces.
+Examples of representing our community include using an official e-mail address,
+posting via an official social media account, or acting as an appointed
+representative at an online or offline event.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported to the community leaders responsible for enforcement at
+mailto: sunil@thakares.com.
+All complaints will be reviewed and investigated promptly and fairly.
+
+All community leaders are obligated to respect the privacy and security of the
+reporter of any incident.
+
+## Enforcement Guidelines
+
+Community leaders will follow these Community Impact Guidelines in determining
+the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed
+unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from community leaders, providing
+clarity around the nature of the violation and an explanation of why the
+behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
+
+**Community Impact**: A violation through a single incident or series
+of actions.
+
+**Consequence**: A warning with consequences for continued behavior. No
+interaction with the people involved, including unsolicited interaction with
+those enforcing the Code of Conduct, for a specified period of time. This
+includes avoiding interactions in community spaces as well as external channels
+like social media. Violating these terms may lead to a temporary or
+permanent ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including
+sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public
+communication with the community for a specified period of time. No public or
+private interaction with the people involved, including unsolicited interaction
+with those enforcing the Code of Conduct, is allowed during this period.
+Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community
+standards, including sustained inappropriate behavior,  harassment of an
+individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within
+the community.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 2.0, available at
+https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
+
+Community Impact Guidelines were inspired by [Mozilla's code of conduct
+enforcement ladder](https://github.com/mozilla/diversity).
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see the FAQ at
+https://www.contributor-covenant.org/faq. Translations are available at
+https://www.contributor-covenant.org/translations.
diff --git a/Cargo.toml b/Cargo.toml
index acf9dc5..6753100 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,15 +1,20 @@
 # Cargo.toml
 [package]
-name = "nx9_dns_server"
+name = "nx9-dns-server"
 version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-rusqlite = "0.35.0"
-log = "0.4.27"
-thiserror = "2.0.12"
-env_logger = "0.11.8"
-tokio = { version = "1.44", features = ["full"] }
-hex = "0.4.3"
-base64 = "0.22.1"
-chrono = "0.4.41"
+tokio = { version = "1.32", features = ["full"] }
+rusqlite = { version = "0.29", features = ["bundled"] }
+log = "0.4"
+env_logger = "0.10"
+thiserror = "1.0"
+hex = "0.4"
+base64 = "0.21"
+r2d2 = "0.8"
+r2d2_sqlite = "0.22"
+lru = "0.12"
+metrics = "0.21"
+metrics-exporter-prometheus = "0.12"
+chrono = "0.4"
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..6ef71c8
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,57 @@
+# Build stage
+FROM rust:1.72-slim-bookworm AS builder
+
+# Install necessary build dependencies
+RUN apt-get update && apt-get install -y \
+    musl-tools \
+    build-essential \
+    pkg-config \
+    libssl-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# Add support for cross-compilation to Alpine
+RUN rustup target add x86_64-unknown-linux-musl
+
+# Create a new empty project
+WORKDIR /app
+COPY . .
+
+# Build the project with musl target
+RUN cargo build --target x86_64-unknown-linux-musl --release
+
+# Runtime stage
+FROM alpine:3.18
+
+# Install runtime dependencies
+RUN apk --no-cache add ca-certificates sqlite tzdata
+
+# Create a non-root user for running the application
+RUN addgroup -S dns && adduser -S dnsuser -G dns
+
+# Create necessary directories
+RUN mkdir -p /var/nx9-dns-server /var/log/nx9-dns-server /etc/nx9-dns-server
+RUN chown -R dnsuser:dns /var/nx9-dns-server /var/log/nx9-dns-server /etc/nx9-dns-server
+
+# Copy the compiled binary
+COPY --from=builder /app/target/x86_64-unknown-linux-musl/release/dns_server /usr/local/bin/
+RUN chmod +x /usr/local/bin/dns_server
+
+# Copy configuration files
+COPY --from=builder /app/conf/dns_records.sql /etc/nx9-dns-server/
+COPY --from=builder /app/conf/dns.db.sample /etc/nx9-dns-server/
+
+# Expose DNS ports
+EXPOSE 53/udp 53/tcp
+# Expose Web UI port
+EXPOSE 8080/tcp
+# Expose API port
+EXPOSE 8081/tcp
+
+# Set working directory
+WORKDIR /var/nx9-dns-server
+
+# Switch to non-root user
+USER dnsuser
+
+# Command to run the application
+CMD ["/usr/local/bin/dns_server"]
\ No newline at end of file
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..f288702
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
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+
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+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/README.md b/README.md
index 1ede5e2..af43f8d 100644
--- a/README.md
+++ b/README.md
@@ -566,7 +566,7 @@ This project is licensed under the [GNU General Public License v3.0 (GPLv3)](LIC
 
 ---
 
-**nx9-dns-server** is developed and maintained by [Your Name or Organization].  
+**nx9-dns-server** is developed and maintained by Sunil Purushottam Thakare <sunil@thakares.com>.  
 For more information, see the source code or contact the maintainer via GitHub.
 
 ---
diff --git a/deploy-dns-server.sh b/deploy-dns-server.sh
new file mode 100644
index 0000000..9da394a
--- /dev/null
+++ b/deploy-dns-server.sh
@@ -0,0 +1,35 @@
+#!/bin/bash
+
+set -e  # Exit on error
+
+echo "🔧 Making preprocess-key.sh executable..."
+sudo chmod +x /var/nx9-dns-server/preprocess-key.sh
+
+echo "👤 Running preprocess-key.sh as dnsuser..."
+sudo -u dnsuser /var/nx9-dns-server/preprocess-key.sh
+
+echo "🔧 Setting ownership and permissions for soa-update.sh..."
+sudo chown dnsuser:dnsuser /var/nx9-dns-server/soa-update.sh
+sudo chmod +x /var/nx9-dns-server/soa-update.sh
+
+echo "👤 Running soa-update.sh as dnsuser..."
+sudo -u dnsuser /var/nx9-dns-server/soa-update.sh
+
+echo "📄 Checking output of processed.key..."
+sudo cat /var/nx9-dns-server/processed.key
+
+echo "🛑 Stopping dns-server.service..."
+sudo systemctl stop dns-server.service
+
+echo "📦 Deploying compiled binary to /var/nx9-dns-server..."
+sudo cp /home/sunil/apps/nx9-bzo-ddns/dns_server /var/nx9-dns-server/dns_server
+
+echo "👤 Fixing ownership of /var/nx9-dns-server..."
+sudo chown dnsuser:dnsuser /var/nx9-dns-server
+
+echo "🔄 Reloading systemd daemon and restarting service..."
+sudo systemctl daemon-reload
+sudo systemctl restart dns-server.service
+
+echo "📡 Checking status of dns-server.service..."
+sudo systemctl status dns-server.service
diff --git a/deploy.sh b/deploy.sh
index e4963f7..f6769dd 100755
--- a/deploy.sh
+++ b/deploy.sh
@@ -2,9 +2,9 @@
 set -e
 
 # Paths
-SRC_BIN="/home/sunil/apps/bzo-ddns/dns_server"
-DEST_DIR="/var/dns-server"
-DEST_BIN="$DEST_DIR/dns_server"
+SRC_BIN="/home/<user-name>/apps/nx9-dns-server/dns_server"
+DEST_DIR="/var/nx9-dns-server"
+DEST_BIN="$DEST_DIR/nx9-dns_server"
 PREPROCESS_SCRIPT="$DEST_DIR/preprocess-key.sh"
 SOA_UPDATE_SCRIPT="$DEST_DIR/soa-update.sh"
 
diff --git a/dns_records.sql b/dns_records.sql
index ca03e36..6e1dd38 100644
--- a/dns_records.sql
+++ b/dns_records.sql
@@ -19,18 +19,18 @@ ALTER TABLE dns_records_new RENAME TO dns_records;
 
 -- Now insert all DNS records
 INSERT OR REPLACE INTO dns_records VALUES
-    ('33.61.254.60.in-addr.arpa', 'PTR', 'ns1.bzo.in', 3600),
-    ('admin.bzo.in', 'A', '60.254.61.33', 3600),
-    ('api.bzo.in', 'A', '60.254.61.33', 3600),
-    ('bzo.in', 'A', '60.254.61.33', 3600),
-    ('bzo.in', 'MX', '10 mail.bzo.in', 3600),
-    ('bzo.in', 'NS', 'ns1.bzo.in', 3600),
-    ('bzo.in', 'NS', 'ns2.bzo.in', 3600),  -- This will now work with the new schema
-    ('bzo.in', 'SOA', 'ns1.bzo.in hostmaster.bzo.in 1 10800 3600 604800 86400', 3600),
-    ('bzo.in', 'TXT', '"v=spf1 a mx ~all"', 3600),
-    ('ddns.bzo.in', 'A', '60.254.61.33', 3600),
-    ('ns1.bzo.in', 'A', '60.254.61.33', 3600),
-    ('ns2.bzo.in', 'A', '60.254.61.33', 3600),
-    ('www.bzo.in', 'A', '60.254.61.33', 3600);
+    ('33.61.254.60.in-addr.arpa', 'PTR', 'ns1.yourdomain.tld', 3600),
+    ('admin.yourdomain.tld', 'A', '60.254.61.33', 3600),
+    ('api.yourdomain.tld', 'A', '60.254.61.33', 3600),
+    ('yourdomain.tld', 'A', '60.254.61.33', 3600),
+    ('yourdomain.tld', 'MX', '10 mail.yourdomain.tld', 3600),
+    ('yourdomain.tld', 'NS', 'ns1.yourdomain.tld', 3600),
+    ('yourdomain.tld', 'NS', 'ns2.yourdomain.tld', 3600),  -- This will now work with the new schema
+    ('yourdomain.tld', 'SOA', 'ns1.yourdomain.tld hostmaster.yourdomain.tld 1 10800 3600 604800 86400', 3600),
+    ('yourdomain.tld', 'TXT', '"v=spf1 a mx ~all"', 3600),
+    ('ddns.yourdomain.tld', 'A', '60.254.61.33', 3600),
+    ('ns1.yourdomain.tld', 'A', '60.254.61.33', 3600),
+    ('ns2.yourdomain.tld', 'A', '60.254.61.33', 3600),
+    ('www.yourdomain.tld', 'A', '60.254.61.33', 3600);
 
 COMMIT;
diff --git a/dns_server.service b/dns_server.service
index 47e6e30..938d699 100644
--- a/dns_server.service
+++ b/dns_server.service
@@ -1,30 +1,30 @@
 [Unit]
-Description=DNS Server
+Description=NX9 DNS Server
 After=network.target
 
 [Service]
 User=dnsuser
 Group=dnsuser
-WorkingDirectory=/var/dns-server
-ExecStart=/var/dns-server/dns_server  # Run directly, skip wrapper
+WorkingDirectory=/var/nx9-dns-server
+ExecStart=/var/dns-server/nx9-dns_server  # Run directly, skip wrapper
 Restart=always
 Environment=DNS_BIND=0.0.0.0:53
 Environment=DNS_ENABLE_IPV6=1
 Environment=DNS_MAX_PACKET_SIZE=4096
-Environment=DNS_DB_PATH=/var/dns-server/dns.db
-Environment=DNS_NS_RECORDS=ns1.bzo.in.,ns2.bzo.in.
+Environment=DNS_DB_PATH=/var/nx9-dns-server/dns.db
+Environment=DNS_NS_RECORDS=ns1.yourdomain.tld.,ns2.yourdomain.tld.
 Environment=DNS_AUTHORITATIVE=1
 Environment=DNS_CACHE_TTL=300
 Environment=RUST_LOG=info
-Environment=DNS_DEFAULT_DOMAIN=bzo.in
-Environment=DNS_DEFAULT_IP=60.254.61.33
+Environment=DNS_DEFAULT_DOMAIN=yourdomain.tld
+Environment=DNS_DEFAULT_IP=<YOUR-PUBLIC-IP4>
 Environment="DNS_RECURSIVE=1" # Enable recursive resolution
 Environment="DNS_CACHE_SIZE=10000" 
 Environment="DNS_FORWARDERS=8.8.8.8:53,1.1.1.1:53,9.9.9.9:53"
 
 CapabilityBoundingSet=CAP_NET_BIND_SERVICE
 AmbientCapabilities=CAP_NET_BIND_SERVICE
-ReadWritePaths=/var/dns-server
+ReadWritePaths=/var/nx9-dns-server
 ProtectSystem=full
 LimitNOFILE=65536
 
diff --git a/dns_wrapper.sh b/dns_wrapper.sh
new file mode 100644
index 0000000..07ff78e
--- /dev/null
+++ b/dns_wrapper.sh
@@ -0,0 +1,22 @@
+# Create a file at /var/nx9-dns-server/dns_wrapper.sh
+#!/bin/bash
+# Log start with timestamp
+echo "Starting DNS server at $(date)" >> /var/log/nx9-dns_server_wrapper.log
+
+# Export all environment variables explicitly
+export DNS_DB_PATH=/var/nx9-dns-server/dns.db
+export DNS_BIND=0.0.0.0:53
+export DNS_ENABLE_IPV6=1
+export DNS_MAX_PACKET_SIZE=4096
+export DNS_NS_RECORDS=ns1.yourdomain.tld.,ns2.yourdomain.tld.
+export DNS_AUTHORITATIVE=1
+export DNS_CACHE_TTL=300
+export RUST_LOG=info
+export DNS_DEFAULT_DOMAIN=yourdomain.tld
+export DNS_DEFAULT_IP=<YOUR-PUBLIC-IP4>
+
+# Print environment for debugging
+env >> /var/log/nx9-dns-server_wrapper.log
+
+# Run the DNS server
+/var/dns-server/nx9-dns-server
diff --git a/dnscheck.sh b/dnscheck.sh
index 146485d..e37be5b 100755
--- a/dnscheck.sh
+++ b/dnscheck.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
-DOMAIN="bzo.in"
-DNS_SERVER="192.168.1.200"
+DOMAIN="yourdomain.tld"
+DNS_SERVER="192.168.1.200" # your LAN Server Address
 
 echo "=== DNS Diagnostic Report for $DOMAIN using $DNS_SERVER ==="
 echo
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..d090007
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,24 @@
+version: '3.8'
+
+services:
+  dns:
+    image: nx9-dns-server:latest
+    container_name: nx9-dns
+    ports:
+      - "53:53/udp"
+      - "53:53/tcp"
+      - "8080:8080"
+      - "8081:8081"
+    volumes:
+      - ./data/dns.db:/var/nx9-dns-server/dns.db
+      - ./keys:/etc/nx9-dns-server/keys
+      - ./logs:/var/log/nx9-dns-server
+    environment:
+      - DNS_BIND=0.0.0.0:53
+      - DNS_DB_PATH=/var/nx9-dns-server/dns.db
+      - DNSSEC_KEY_FILE=/etc/nx9-dns-server/keys/Kanydomain.tld.key
+      - DNS_FORWARDERS=8.8.8.8:53,1.1.1.1:53
+      - DNS_NS_RECORDS=ns1.anydomain.tld.,ns2.anydomain.tld.
+      - WEB_UI_BIND=0.0.0.0:8080
+      - API_BIND=0.0.0.0:8081
+    restart: unless-stopped
\ No newline at end of file
diff --git a/preprocess-key.sh b/preprocess-key.sh
new file mode 100644
index 0000000..040c696
--- /dev/null
+++ b/preprocess-key.sh
@@ -0,0 +1,26 @@
+#!/bin/bash
+
+INPUT_FILE="/var/nx9-dns-server/Kyourdomain.+nnn+nnnnn.key"
+OUTPUT_FILE="/var/nx9-dns-server/processed.key"
+
+# Extract and clean the DNSKEY record
+DNSKEY_RECORD=$(grep -E '^[^;].*IN[[:space:]]+DNSKEY' "$INPUT_FILE" | head -1)
+
+if [ -z "$DNSKEY_RECORD" ]; then
+    echo "Error: No valid DNSKEY record found" >&2
+    exit 1
+fi
+
+# Format: "domain. IN DNSKEY flags protocol algorithm key"
+echo "$DNSKEY_RECORD" | awk '{
+    # Remove comments and extra spaces
+    gsub(/;.*$/, "");
+    gsub(/[[:space:]]+/, " ");
+    # Reconstruct with clean base64
+    printf "%s %s %s %s %s %s ", $1, $2, $3, $4, $5, $6;
+    # Print key without any whitespace
+    for (i=7; i<=NF; i++) printf "%s", $i;
+    print "";
+}' > "$OUTPUT_FILE"
+
+exit 0
diff --git a/soa-update.sh b/soa-update.sh
new file mode 100644
index 0000000..f94356f
--- /dev/null
+++ b/soa-update.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+DB_PATH="/var/nx9-dns-server/dns.db"
+ZONE="yourdomain.tld"
+
+# Get today's date and an incremental suffix
+DATE=$(date +%Y%m%d)
+SERIAL_SUFFIX="01"
+NEW_SERIAL="${DATE}${SERIAL_SUFFIX}"
+
+# Update SOA value
+sqlite3 "$DB_PATH" <<EOF
+UPDATE dns_records
+SET value = 'ns1.yourdomain.tld hostmaster.yourdomain.tld $NEW_SERIAL 10800 3600 604800 86400'
+WHERE domain = '$ZONE' AND record_type = 'SOA';
+EOF
+
+echo "SOA record updated with serial: $NEW_SERIAL"
diff --git a/start.sh b/start.sh
new file mode 100644
index 0000000..416a672
--- /dev/null
+++ b/start.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+export DNS_BIND=0.0.0.0:53
+export DNS_ENABLE_IPV6=1
+export DNS_MAX_PACKET_SIZE=4096
+export DNS_DB_PATH=/var/nx9-dns-server/dns.db
+export DNS_NS_RECORDS=ns1.yourdomain.tld.,ns2.yourdomain.tld.
+export DNS_AUTHORITATIVE=1
+export DNS_CACHE_TTL=300
+export RUST_LOG=info
+export DNS_DEFAULT_DOMAIN=yourdomain.tld
+export DNS_DEFAULT_IP=<YOUR-PUBLIC-IP4>
+
+exec /var/dns-server/nx9-dns_server

From ce1d265f1fea2eb644bcbd88cba17845b369b6ed Mon Sep 17 00:00:00 2001
From: Sunil Purushottam Thakare <sunil@thakares.com>
Date: Sat, 24 May 2025 23:14:13 +0530
Subject: [PATCH 5/7] Delete Algorithm-Flowchart.md

---
 Algorithm-Flowchart.md | 146 -----------------------------------------
 1 file changed, 146 deletions(-)
 delete mode 100644 Algorithm-Flowchart.md

diff --git a/Algorithm-Flowchart.md b/Algorithm-Flowchart.md
deleted file mode 100644
index 727673e..0000000
--- a/Algorithm-Flowchart.md
+++ /dev/null
@@ -1,146 +0,0 @@
-
-# DNS Server Algorithm & Flowchart
-
-This document outlines the algorithm and flowchart for a DNS server implementation compliant with RFC 1035 (DNS) and RFC 4034 (DNSSEC).
-
----
-
-## ✅ Server Algorithm
-
-### 1. Server Initialization
-
-1. Load configuration from environment variables.
-2. Initialize the logging system.
-3. Create SQLite database connection and initialize schema.
-4. Initialize cache with NS records.
-5. Start periodic cache cleanup task (every 5 minutes).
-6. Bind and listen on UDP and TCP sockets.
-
-### 2. Query Handling Flow
-
-#### Upon Receiving a DNS Query:
-
-1. Validate DNS query packet.
-2. Parse header and extract domain name and query type.
-3. If query type is `DNSKEY` or `DS`, return signed records.
-4. Check DNS cache:
-    - If **hit**, build and return response.
-    - If **miss**, lookup in database:
-        - If found, respond and cache it.
-        - If not found:
-            - If authoritative, return `NXDOMAIN`.
-            - Else, forward to upstream resolvers.
-5. Add DNSSEC signatures if applicable.
-6. Send response to the client.
-
-### 3. DNSSEC Signing Process
-
-1. Load DNSSEC key from configured file.
-2. For each relevant record:
-    - Generate `RRSIG`.
-    - Encode signature (Base64).
-    - Calculate key tag and signature expiration.
-3. Add `RRSIG` to the answer section.
-4. Include `DNSKEY` in the authority section if needed.
-
-### 4. Response Generation Logic
-
-1. Construct response header:
-    - Set QR flag and response code.
-    - Include Authoritative Answer (AA) if authoritative.
-2. Attach original question section.
-3. Populate:
-    - **Answer** section: with resolved records.
-    - **Authority** section: with NS and DS records.
-    - **Additional** section: with glue records, DNSKEY if required.
-
----
-
-## 📊 Flowchart
-![Flowchart](flow-chart.png)
-Below is the visual representation of the DNS query handling logic:
-
-```
-
-+---------------------+
-|   Start DNS Server  |
-+---------------------+
-           |
-           v
-+---------------------+
-|  Receive DNS Query  |
-+---------------------+
-           |
-           v
-+---------------------+
-| Parse Header and    |
-| Extract Domain &    |
-| Query Type          |
-+---------------------+
-           |
-           +---------------------+
-           |                     |
-           v                     v
-+---------------------+  +---------------------+
-| Is Query Type       |  | Use Cache           |
-| DNSKEY/DS?          |  |                     |
-+---------------------+  +---------------------+
-           |                     |
-    Yes    |                     |
-           v                     v
-+---------------------+  +---------------------+
-| Return              |  | Lookup in SQLite DB |
-| DNSSEC Record       |  |                     |
-+---------------------+  +---------------------+
-                                   |
-                                   v
-                        +---------------------+
-                        | Is Authoritative    |
-                        | Zone?               |
-                        +---------------------+
-                                   |
-                            No     |
-                                   v
-                        +---------------------+
-                        | Return NXDOMAIN     |
-                        +---------------------+
-                                   |
-                                   v
-                        +---------------------+
-                        | Add GSSEC           |
-                        +---------------------+
-                                   |
-                                   v
-                        +---------------------+
-                        | Send Response       |
-                        +---------------------+
-                                   |
-                                   v
-                        +---------------------+
-                        | End                 |
-                        +---------------------+
-
-```
-
-
-## 🧩 Key Components
-
-| Component      | Purpose                    | Details                                  |
-|----------------|----------------------------|------------------------------------------|
-| `DnsCache`     | DNS Response Cache         | Thread-safe HashMap with TTL             |
-| `ServerConfig` | Server Configuration       | Loaded via environment variables         |
-| `rusqlite`     | Record Storage             | SQLite database backend                  |
-| `tokio`        | Async I/O Runtime          | UDP/TCP async handlers and tasks         |
-| `DNSSEC`       | Secure DNS Signing         | RSA-SHA256 with Base64-encoded keys      |
-
----
-
-## ⚠️ Error Handling Strategy
-
-- Custom `DnsError` enum via `thiserror`
-- Graceful shutdown via `SIGINT`
-- Cache cleanup every 5 minutes
-- Fallback to resolver forwarding
-- Detailed logging at every stage
-
----

From 50b05d8dd2436bfadf2e8f9f80b0f14375c32b6d Mon Sep 17 00:00:00 2001
From: Sunil Purushottam Thakare <sunil@thakares.com>
Date: Sat, 24 May 2025 23:14:33 +0530
Subject: [PATCH 6/7] Delete Cargo.lock

---
 Cargo.lock | 881 -----------------------------------------------------
 1 file changed, 881 deletions(-)
 delete mode 100644 Cargo.lock

diff --git a/Cargo.lock b/Cargo.lock
deleted file mode 100644
index 31acfe6..0000000
--- a/Cargo.lock
+++ /dev/null
@@ -1,881 +0,0 @@
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From 18b2c37dc00151295564efda1783581770269367 Mon Sep 17 00:00:00 2001
From: Sunil Purushottam Thakare <sunil@thakares.com>
Date: Sat, 24 May 2025 23:15:20 +0530
Subject: [PATCH 7/7] Delete Docker directory

---
 Docker/Dockerfile         | 57 ---------------------------------------
 Docker/docker-compose.yml | 24 -----------------
 2 files changed, 81 deletions(-)
 delete mode 100644 Docker/Dockerfile
 delete mode 100644 Docker/docker-compose.yml

diff --git a/Docker/Dockerfile b/Docker/Dockerfile
deleted file mode 100644
index 6ef71c8..0000000
--- a/Docker/Dockerfile
+++ /dev/null
@@ -1,57 +0,0 @@
-# Build stage
-FROM rust:1.72-slim-bookworm AS builder
-
-# Install necessary build dependencies
-RUN apt-get update && apt-get install -y \
-    musl-tools \
-    build-essential \
-    pkg-config \
-    libssl-dev \
-    && rm -rf /var/lib/apt/lists/*
-
-# Add support for cross-compilation to Alpine
-RUN rustup target add x86_64-unknown-linux-musl
-
-# Create a new empty project
-WORKDIR /app
-COPY . .
-
-# Build the project with musl target
-RUN cargo build --target x86_64-unknown-linux-musl --release
-
-# Runtime stage
-FROM alpine:3.18
-
-# Install runtime dependencies
-RUN apk --no-cache add ca-certificates sqlite tzdata
-
-# Create a non-root user for running the application
-RUN addgroup -S dns && adduser -S dnsuser -G dns
-
-# Create necessary directories
-RUN mkdir -p /var/nx9-dns-server /var/log/nx9-dns-server /etc/nx9-dns-server
-RUN chown -R dnsuser:dns /var/nx9-dns-server /var/log/nx9-dns-server /etc/nx9-dns-server
-
-# Copy the compiled binary
-COPY --from=builder /app/target/x86_64-unknown-linux-musl/release/dns_server /usr/local/bin/
-RUN chmod +x /usr/local/bin/dns_server
-
-# Copy configuration files
-COPY --from=builder /app/conf/dns_records.sql /etc/nx9-dns-server/
-COPY --from=builder /app/conf/dns.db.sample /etc/nx9-dns-server/
-
-# Expose DNS ports
-EXPOSE 53/udp 53/tcp
-# Expose Web UI port
-EXPOSE 8080/tcp
-# Expose API port
-EXPOSE 8081/tcp
-
-# Set working directory
-WORKDIR /var/nx9-dns-server
-
-# Switch to non-root user
-USER dnsuser
-
-# Command to run the application
-CMD ["/usr/local/bin/dns_server"]
\ No newline at end of file
diff --git a/Docker/docker-compose.yml b/Docker/docker-compose.yml
deleted file mode 100644
index d090007..0000000
--- a/Docker/docker-compose.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-version: '3.8'
-
-services:
-  dns:
-    image: nx9-dns-server:latest
-    container_name: nx9-dns
-    ports:
-      - "53:53/udp"
-      - "53:53/tcp"
-      - "8080:8080"
-      - "8081:8081"
-    volumes:
-      - ./data/dns.db:/var/nx9-dns-server/dns.db
-      - ./keys:/etc/nx9-dns-server/keys
-      - ./logs:/var/log/nx9-dns-server
-    environment:
-      - DNS_BIND=0.0.0.0:53
-      - DNS_DB_PATH=/var/nx9-dns-server/dns.db
-      - DNSSEC_KEY_FILE=/etc/nx9-dns-server/keys/Kanydomain.tld.key
-      - DNS_FORWARDERS=8.8.8.8:53,1.1.1.1:53
-      - DNS_NS_RECORDS=ns1.anydomain.tld.,ns2.anydomain.tld.
-      - WEB_UI_BIND=0.0.0.0:8080
-      - API_BIND=0.0.0.0:8081
-    restart: unless-stopped
\ No newline at end of file