diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..af5b3f4
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,38 @@
+# Build stage
+FROM node:20-alpine as build-stage
+
+WORKDIR /usr/src/app
+
+# Copy TypeScript config
+COPY tsconfig.json ./
+
+# Copy package.json and package-lock.json (if available) to the working directory
+COPY package*.json ./
+
+# Install all dependencies and build your app
+RUN npm install
+COPY src src
+RUN npm run build
+
+# Production stage
+FROM node:20-alpine as production-stage
+
+WORKDIR /usr/src/app
+
+# Copy package.json and package-lock.json (if available) for production dependencies
+COPY package*.json ./
+
+# Install only production dependencies
+RUN npm install --only=production
+
+# Copy static files
+COPY ./static ./static
+
+# Copy built assets from the build stage
+COPY --from=build-stage /usr/src/app/dist ./dist
+
+# Your application binds to port 3000, make sure the container exposes this port
+EXPOSE 3000
+
+# The command to run your application
+CMD [ "node", "dist/index.js" ]
\ No newline at end of file
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..cda8001
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        https://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
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+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
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+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
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+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
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+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
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+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
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+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
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+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
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+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
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+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
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+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
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+          within a display generated by the Derivative Works, if and
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+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       https://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..5487594
--- /dev/null
+++ b/README.md
@@ -0,0 +1,122 @@
+# SMS Gateway for Android™ Web Client
+
+## Description
+
+This is a demonstration app that utilizes the [SMS Gateway for Android™](https://sms.capcom.me/) to create an SMS management web interface. It leverages webhooks to display received SMS messages in real-time and provides the capability to send SMS messages.
+
+## Features
+
+- Connect to any account registered on the Cloud/Private server.
+- Real-time receipt of SMS messages.
+- Capability to send SMS messages.
+
+## Privacy
+
+The application does not store credentials anywhere, except in the session memory, which is cleared upon logout. Received and sent SMS messages are not stored at all for now.
+
+## Getting Started
+
+### Prerequisites
+
+- Node.js
+- npm or yarn
+
+### Installation
+
+1. Clone the repository:
+    ```bash
+    git clone <repository-url>
+    ```
+2. Navigate into the project directory:
+    ```bash
+    cd web-client-ts
+    ```
+3. Install dependencies:
+    ```bash
+    npm install
+    ```
+    or if you use yarn:
+    ```bash
+    yarn install
+    ```
+
+### Configuration
+
+To configure the application, create a `.env` file in the project root directory. This file should contain your environment variables, which include:
+
+- `HTTP__PORT` or `PORT`: Specifies the port on which the server listens.
+- `HTTP__SESSION_SECRET`: A secret key for session encryption.
+- `GATEWAY__URL`: The URL of the gateway API.
+- `GATEWAY__WEBHOOK_URL`: The external address of the server, appended with `/api/webhooks`, to receive webhooks.
+- `NODE_ENV`: Set to `development` to enable development mode.
+
+For more detailed information on the configuration options, please refer to `src/config.ts`.
+
+### Running the Project
+
+- To run in development mode:
+    ```bash
+    npm run dev
+    ```
+    or
+    ```bash
+    yarn dev
+    ```
+
+- To build the project:
+    ```bash
+    npm run build
+    ```
+    or
+    ```bash
+    yarn build
+    ```
+
+- To start the server:
+    ```bash
+    npm start
+    ```
+    or
+    ```bash
+    yarn start
+    ```
+
+## Usage
+
+After starting the server, navigate to `http://localhost:<your-configured-port>` to view the application.
+
+## Technical details
+
+This app uses socket.io for real-time communication.
+
+### Events sequence
+
+Client always listens to events `login:success` and `login:fail`. The first one indicates that client successfully logged in by previously sending `login` event or saved in session credentials. The second one indicates that login attempt failed, current credentials can't be used anymore or session expired.
+
+Typical sequences:
+
+1. Client sends `login` event with credentials to login.
+2. Server responds with `login:success` or `login:fail` event.
+3. Client sends `sms:send` event with message to send new message. Server sends acknowledgement with success or failure.
+4. Server sends `sms:received` event with newly received message.
+5. Client sends `logout` event to destroy session.
+
+### Client emmited events
+
+- `login` with `{login: string, password: string}` payload - login attempt. Server responds by `login:success` or `login:fail` event.
+- `sms:send` with `{phoneNumber: string, message: string}` payload - send SMS message. Server uses acknowledgement to respond with payload `{success: boolean, message?: string}`.
+- `logout` - destroy session, server responds by `login:fail` event.
+
+### Server emmited events
+
+- `sms:received` with `{phoneNumber: string, message: string, receivedAt: Date}` payload - received SMS message. The client should add received message to the list.
+- `login:success` - login successful. The client should move from login screen to messaging screen.
+- `login:fail` - login failed. The client should move to login screen if it is not already there.
+
+## Contributing
+
+Contributions are welcome! Please feel free to submit a pull request.
+
+## License
+
+This project is licensed under the Apache-2.0 License - see the `LICENSE` file for details.
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index c545bbb..3430124 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7,13 +7,18 @@
     "": {
       "name": "web-client-ts",
       "version": "1.0.0",
-      "license": "ISC",
+      "license": "Apache-2.0",
       "dependencies": {
         "dotenv": "^16.4.5",
-        "express": "^4.19.2"
+        "express": "^4.19.2",
+        "express-session": "^1.18.0",
+        "morgan": "^1.10.0",
+        "socket.io": "^4.7.5"
       },
       "devDependencies": {
         "@types/express": "^4.17.21",
+        "@types/express-session": "^1.18.0",
+        "@types/morgan": "^1.9.9",
         "@types/node": "^20.14.6",
         "nodemon": "^3.1.3",
         "ts-node": "^10.9.2",
@@ -57,6 +62,11 @@
         "@jridgewell/sourcemap-codec": "^1.4.10"
       }
     },
+    "node_modules/@socket.io/component-emitter": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/@socket.io/component-emitter/-/component-emitter-3.1.2.tgz",
+      "integrity": "sha512-9BCxFwvbGg/RsZK9tjXd8s4UcwR0MWeFQ1XEKIQVVvAGJyINdrqKMcTRyLoK8Rse1GjzLV9cwjWV1olXRWEXVA=="
+    },
     "node_modules/@tsconfig/node10": {
       "version": "1.0.11",
       "resolved": "https://registry.npmjs.org/@tsconfig/node10/-/node10-1.0.11.tgz",
@@ -100,6 +110,19 @@
         "@types/node": "*"
       }
     },
+    "node_modules/@types/cookie": {
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/@types/cookie/-/cookie-0.4.1.tgz",
+      "integrity": "sha512-XW/Aa8APYr6jSVVA1y/DEIZX0/GMKLEVekNG727R8cs56ahETkRAy/3DR7+fJyh7oUgGwNQaRfXCun0+KbWY7Q=="
+    },
+    "node_modules/@types/cors": {
+      "version": "2.8.17",
+      "resolved": "https://registry.npmjs.org/@types/cors/-/cors-2.8.17.tgz",
+      "integrity": "sha512-8CGDvrBj1zgo2qE+oS3pOCyYNqCPryMWY2bGfwA0dcfopWGgxs+78df0Rs3rc9THP4JkOhLsAa+15VdpAqkcUA==",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/express": {
       "version": "4.17.21",
       "resolved": "https://registry.npmjs.org/@types/express/-/express-4.17.21.tgz",
@@ -124,6 +147,15 @@
         "@types/send": "*"
       }
     },
+    "node_modules/@types/express-session": {
+      "version": "1.18.0",
+      "resolved": "https://registry.npmjs.org/@types/express-session/-/express-session-1.18.0.tgz",
+      "integrity": "sha512-27JdDRgor6PoYlURY+Y5kCakqp5ulC0kmf7y+QwaY+hv9jEFuQOThgkjyA53RP3jmKuBsH5GR6qEfFmvb8mwOA==",
+      "dev": true,
+      "dependencies": {
+        "@types/express": "*"
+      }
+    },
     "node_modules/@types/http-errors": {
       "version": "2.0.4",
       "resolved": "https://registry.npmjs.org/@types/http-errors/-/http-errors-2.0.4.tgz",
@@ -136,11 +168,19 @@
       "integrity": "sha512-/pyBZWSLD2n0dcHE3hq8s8ZvcETHtEuF+3E7XVt0Ig2nvsVQXdghHVcEkIWjy9A0wKfTn97a/PSDYohKIlnP/w==",
       "dev": true
     },
+    "node_modules/@types/morgan": {
+      "version": "1.9.9",
+      "resolved": "https://registry.npmjs.org/@types/morgan/-/morgan-1.9.9.tgz",
+      "integrity": "sha512-iRYSDKVaC6FkGSpEVVIvrRGw0DfJMiQzIn3qr2G5B3C//AWkulhXgaBd7tS9/J79GWSYMTHGs7PfI5b3Y8m+RQ==",
+      "dev": true,
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/node": {
       "version": "20.14.6",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-20.14.6.tgz",
       "integrity": "sha512-JbA0XIJPL1IiNnU7PFxDXyfAwcwVVrOoqyzzyQTyMeVhBzkJVMSkC1LlVsRQ2lpqiY4n6Bb9oCS6lzDKVQxbZw==",
-      "dev": true,
       "dependencies": {
         "undici-types": "~5.26.4"
       }
@@ -244,6 +284,30 @@
       "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==",
       "dev": true
     },
+    "node_modules/base64id": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/base64id/-/base64id-2.0.0.tgz",
+      "integrity": "sha512-lGe34o6EHj9y3Kts9R4ZYs/Gr+6N7MCaMlIFA3F1R2O5/m7K06AxfSeO5530PEERE6/WyEg3lsuyw4GHlPZHog==",
+      "engines": {
+        "node": "^4.5.0 || >= 5.9"
+      }
+    },
+    "node_modules/basic-auth": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/basic-auth/-/basic-auth-2.0.1.tgz",
+      "integrity": "sha512-NF+epuEdnUYVlGuhaxbbq+dvJttwLnGY+YixlXlME5KpQ5W3CnXA5cVTneY3SPbPDRkcjMbifrwmFYcClgOZeg==",
+      "dependencies": {
+        "safe-buffer": "5.1.2"
+      },
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/basic-auth/node_modules/safe-buffer": {
+      "version": "5.1.2",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+      "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
+    },
     "node_modules/binary-extensions": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-2.3.0.tgz",
@@ -389,6 +453,18 @@
       "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
       "integrity": "sha512-QADzlaHc8icV8I7vbaJXJwod9HWYp8uCqf1xa4OfNu1T7JVxQIrUgOWtHdNDtPiywmFbiS12VjotIXLrKM3orQ=="
     },
+    "node_modules/cors": {
+      "version": "2.8.5",
+      "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
+      "integrity": "sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==",
+      "dependencies": {
+        "object-assign": "^4",
+        "vary": "^1"
+      },
+      "engines": {
+        "node": ">= 0.10"
+      }
+    },
     "node_modules/create-require": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/create-require/-/create-require-1.1.1.tgz",
@@ -469,6 +545,63 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/engine.io": {
+      "version": "6.5.5",
+      "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-6.5.5.tgz",
+      "integrity": "sha512-C5Pn8Wk+1vKBoHghJODM63yk8MvrO9EWZUfkAt5HAqIgPE4/8FF0PEGHXtEd40l223+cE5ABWuPzm38PHFXfMA==",
+      "dependencies": {
+        "@types/cookie": "^0.4.1",
+        "@types/cors": "^2.8.12",
+        "@types/node": ">=10.0.0",
+        "accepts": "~1.3.4",
+        "base64id": "2.0.0",
+        "cookie": "~0.4.1",
+        "cors": "~2.8.5",
+        "debug": "~4.3.1",
+        "engine.io-parser": "~5.2.1",
+        "ws": "~8.17.1"
+      },
+      "engines": {
+        "node": ">=10.2.0"
+      }
+    },
+    "node_modules/engine.io-parser": {
+      "version": "5.2.2",
+      "resolved": "https://registry.npmjs.org/engine.io-parser/-/engine.io-parser-5.2.2.tgz",
+      "integrity": "sha512-RcyUFKA93/CXH20l4SoVvzZfrSDMOTUS3bWVpTt2FuFP+XYrL8i8oonHP7WInRyVHXh0n/ORtoeiE1os+8qkSw==",
+      "engines": {
+        "node": ">=10.0.0"
+      }
+    },
+    "node_modules/engine.io/node_modules/cookie": {
+      "version": "0.4.2",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.2.tgz",
+      "integrity": "sha512-aSWTXFzaKWkvHO1Ny/s+ePFpvKsPnjc551iI41v3ny/ow6tBG5Vd+FuqGNhh1LxOmVzOlGUriIlOaokOvhaStA==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/engine.io/node_modules/debug": {
+      "version": "4.3.5",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.5.tgz",
+      "integrity": "sha512-pt0bNEmneDIvdL1Xsd9oDQ/wrQRkXDT4AUWlNZNPKvW5x/jyO9VFXkJUP07vQ2upmw5PlaITaPKc31jK13V+jg==",
+      "dependencies": {
+        "ms": "2.1.2"
+      },
+      "engines": {
+        "node": ">=6.0"
+      },
+      "peerDependenciesMeta": {
+        "supports-color": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/engine.io/node_modules/ms": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
+    },
     "node_modules/es-define-property": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/es-define-property/-/es-define-property-1.0.0.tgz",
@@ -542,6 +675,29 @@
         "node": ">= 0.10.0"
       }
     },
+    "node_modules/express-session": {
+      "version": "1.18.0",
+      "resolved": "https://registry.npmjs.org/express-session/-/express-session-1.18.0.tgz",
+      "integrity": "sha512-m93QLWr0ju+rOwApSsyso838LQwgfs44QtOP/WBiwtAgPIo/SAh1a5c6nn2BR6mFNZehTpqKDESzP+fRHVbxwQ==",
+      "dependencies": {
+        "cookie": "0.6.0",
+        "cookie-signature": "1.0.7",
+        "debug": "2.6.9",
+        "depd": "~2.0.0",
+        "on-headers": "~1.0.2",
+        "parseurl": "~1.3.3",
+        "safe-buffer": "5.2.1",
+        "uid-safe": "~2.1.5"
+      },
+      "engines": {
+        "node": ">= 0.8.0"
+      }
+    },
+    "node_modules/express-session/node_modules/cookie-signature": {
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.7.tgz",
+      "integrity": "sha512-NXdYc3dLr47pBkpUCHtKSwIOQXLVn8dZEuywboCOJY/osA0wFSLlSawr3KN8qXJEyX66FcONTH8EIlVuK0yyFA=="
+    },
     "node_modules/fill-range": {
       "version": "7.1.1",
       "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.1.1.tgz",
@@ -859,6 +1015,32 @@
         "node": "*"
       }
     },
+    "node_modules/morgan": {
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/morgan/-/morgan-1.10.0.tgz",
+      "integrity": "sha512-AbegBVI4sh6El+1gNwvD5YIck7nSA36weD7xvIxG4in80j/UoK8AEGaWnnz8v1GxonMCltmlNs5ZKbGvl9b1XQ==",
+      "dependencies": {
+        "basic-auth": "~2.0.1",
+        "debug": "2.6.9",
+        "depd": "~2.0.0",
+        "on-finished": "~2.3.0",
+        "on-headers": "~1.0.2"
+      },
+      "engines": {
+        "node": ">= 0.8.0"
+      }
+    },
+    "node_modules/morgan/node_modules/on-finished": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/on-finished/-/on-finished-2.3.0.tgz",
+      "integrity": "sha512-ikqdkGAAyf/X/gPhXGvfgAytDZtDbr+bkNUJ0N9h5MI/dmdgCs3l6hoHrcUv41sRKew3jIwrp4qQDXiK99Utww==",
+      "dependencies": {
+        "ee-first": "1.1.1"
+      },
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
     "node_modules/ms": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
@@ -932,6 +1114,14 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/object-assign": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
+      "integrity": "sha512-rJgTQnkUnH1sFw8yT6VSU3zD3sWmu6sZhIseY8VX+GRu3P6F7Fu+JNDoXfklElbLJSnc3FUQHVe4cU5hj+BcUg==",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/object-inspect": {
       "version": "1.13.1",
       "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.13.1.tgz",
@@ -951,6 +1141,14 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/on-headers": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/on-headers/-/on-headers-1.0.2.tgz",
+      "integrity": "sha512-pZAE+FJLoyITytdqK0U5s+FIpjN0JP3OzFi/u8Rx+EV5/W+JTWGXG8xFzevE7AjBfDqHv/8vL8qQsIhHnqRkrA==",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
     "node_modules/parseurl": {
       "version": "1.3.3",
       "resolved": "https://registry.npmjs.org/parseurl/-/parseurl-1.3.3.tgz",
@@ -1008,6 +1206,14 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/random-bytes": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/random-bytes/-/random-bytes-1.0.0.tgz",
+      "integrity": "sha512-iv7LhNVO047HzYR3InF6pUcUsPQiHTM1Qal51DcGSuZFBil1aBBWG5eHPNek7bvILMaYJ/8RU1e8w1AMdHmLQQ==",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
     "node_modules/range-parser": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/range-parser/-/range-parser-1.2.1.tgz",
@@ -1170,6 +1376,107 @@
         "node": ">=10"
       }
     },
+    "node_modules/socket.io": {
+      "version": "4.7.5",
+      "resolved": "https://registry.npmjs.org/socket.io/-/socket.io-4.7.5.tgz",
+      "integrity": "sha512-DmeAkF6cwM9jSfmp6Dr/5/mfMwb5Z5qRrSXLpo3Fq5SqyU8CMF15jIN4ZhfSwu35ksM1qmHZDQ/DK5XTccSTvA==",
+      "dependencies": {
+        "accepts": "~1.3.4",
+        "base64id": "~2.0.0",
+        "cors": "~2.8.5",
+        "debug": "~4.3.2",
+        "engine.io": "~6.5.2",
+        "socket.io-adapter": "~2.5.2",
+        "socket.io-parser": "~4.2.4"
+      },
+      "engines": {
+        "node": ">=10.2.0"
+      }
+    },
+    "node_modules/socket.io-adapter": {
+      "version": "2.5.5",
+      "resolved": "https://registry.npmjs.org/socket.io-adapter/-/socket.io-adapter-2.5.5.tgz",
+      "integrity": "sha512-eLDQas5dzPgOWCk9GuuJC2lBqItuhKI4uxGgo9aIV7MYbk2h9Q6uULEh8WBzThoI7l+qU9Ast9fVUmkqPP9wYg==",
+      "dependencies": {
+        "debug": "~4.3.4",
+        "ws": "~8.17.1"
+      }
+    },
+    "node_modules/socket.io-adapter/node_modules/debug": {
+      "version": "4.3.5",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.5.tgz",
+      "integrity": "sha512-pt0bNEmneDIvdL1Xsd9oDQ/wrQRkXDT4AUWlNZNPKvW5x/jyO9VFXkJUP07vQ2upmw5PlaITaPKc31jK13V+jg==",
+      "dependencies": {
+        "ms": "2.1.2"
+      },
+      "engines": {
+        "node": ">=6.0"
+      },
+      "peerDependenciesMeta": {
+        "supports-color": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/socket.io-adapter/node_modules/ms": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
+    },
+    "node_modules/socket.io-parser": {
+      "version": "4.2.4",
+      "resolved": "https://registry.npmjs.org/socket.io-parser/-/socket.io-parser-4.2.4.tgz",
+      "integrity": "sha512-/GbIKmo8ioc+NIWIhwdecY0ge+qVBSMdgxGygevmdHj24bsfgtCmcUUcQ5ZzcylGFHsN3k4HB4Cgkl96KVnuew==",
+      "dependencies": {
+        "@socket.io/component-emitter": "~3.1.0",
+        "debug": "~4.3.1"
+      },
+      "engines": {
+        "node": ">=10.0.0"
+      }
+    },
+    "node_modules/socket.io-parser/node_modules/debug": {
+      "version": "4.3.5",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.5.tgz",
+      "integrity": "sha512-pt0bNEmneDIvdL1Xsd9oDQ/wrQRkXDT4AUWlNZNPKvW5x/jyO9VFXkJUP07vQ2upmw5PlaITaPKc31jK13V+jg==",
+      "dependencies": {
+        "ms": "2.1.2"
+      },
+      "engines": {
+        "node": ">=6.0"
+      },
+      "peerDependenciesMeta": {
+        "supports-color": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/socket.io-parser/node_modules/ms": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
+    },
+    "node_modules/socket.io/node_modules/debug": {
+      "version": "4.3.5",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.5.tgz",
+      "integrity": "sha512-pt0bNEmneDIvdL1Xsd9oDQ/wrQRkXDT4AUWlNZNPKvW5x/jyO9VFXkJUP07vQ2upmw5PlaITaPKc31jK13V+jg==",
+      "dependencies": {
+        "ms": "2.1.2"
+      },
+      "engines": {
+        "node": ">=6.0"
+      },
+      "peerDependenciesMeta": {
+        "supports-color": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/socket.io/node_modules/ms": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
+    },
     "node_modules/statuses": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/statuses/-/statuses-2.0.1.tgz",
@@ -1287,6 +1594,17 @@
         "node": ">=14.17"
       }
     },
+    "node_modules/uid-safe": {
+      "version": "2.1.5",
+      "resolved": "https://registry.npmjs.org/uid-safe/-/uid-safe-2.1.5.tgz",
+      "integrity": "sha512-KPHm4VL5dDXKz01UuEd88Df+KzynaohSL9fBh096KWAxSKZQDI2uBrVqtvRM4rwrIrRRKsdLNML/lnaaVSRioA==",
+      "dependencies": {
+        "random-bytes": "~1.0.0"
+      },
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
     "node_modules/undefsafe": {
       "version": "2.0.5",
       "resolved": "https://registry.npmjs.org/undefsafe/-/undefsafe-2.0.5.tgz",
@@ -1296,8 +1614,7 @@
     "node_modules/undici-types": {
       "version": "5.26.5",
       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-5.26.5.tgz",
-      "integrity": "sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA==",
-      "dev": true
+      "integrity": "sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA=="
     },
     "node_modules/unpipe": {
       "version": "1.0.0",
@@ -1329,6 +1646,26 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/ws": {
+      "version": "8.17.1",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.17.1.tgz",
+      "integrity": "sha512-6XQFvXTkbfUOZOKKILFG1PDK2NDQs4azKQl26T0YS5CxqWLgXajbPZ+h4gZekJyRqFU8pvnbAbbs/3TgRPy+GQ==",
+      "engines": {
+        "node": ">=10.0.0"
+      },
+      "peerDependencies": {
+        "bufferutil": "^4.0.1",
+        "utf-8-validate": ">=5.0.2"
+      },
+      "peerDependenciesMeta": {
+        "bufferutil": {
+          "optional": true
+        },
+        "utf-8-validate": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/yn": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/yn/-/yn-3.1.1.tgz",
diff --git a/package.json b/package.json
index 75d49d1..d2163c6 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "web-client-ts",
   "version": "1.0.0",
-  "description": "",
+  "description": "A real-time web application for managing SMS communications based on the SMS Gateway for Android™.",
   "main": "dist/index.js",
   "scripts": {
     "build": "npx tsc",
@@ -9,18 +9,34 @@
     "dev": "nodemon src/index.ts",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
-  "keywords": [],
-  "author": "",
-  "license": "ISC",
+  "keywords": [
+    "typescript",
+    "real-time",
+    "sms",
+    "communication",
+    "nodejs",
+    "messaging"
+  ],
+  "author": {
+    "name": "Aleksandr Soloshenko",
+    "email": "i@capcom.me",
+    "url": "https://github.com/capcom6"
+  },
+  "license": "Apache-2.0",
   "dependencies": {
     "dotenv": "^16.4.5",
-    "express": "^4.19.2"
+    "express": "^4.19.2",
+    "express-session": "^1.18.0",
+    "morgan": "^1.10.0",
+    "socket.io": "^4.7.5"
   },
   "devDependencies": {
     "@types/express": "^4.17.21",
+    "@types/express-session": "^1.18.0",
+    "@types/morgan": "^1.9.9",
     "@types/node": "^20.14.6",
     "nodemon": "^3.1.3",
     "ts-node": "^10.9.2",
     "typescript": "^5.4.5"
   }
-}
+}
\ No newline at end of file
diff --git a/requests.http b/requests.http
index 8b934bf..5ca28ab 100644
--- a/requests.http
+++ b/requests.http
@@ -1,4 +1,20 @@
 @baseUrl=http://localhost:3000
 
 ###
-GET {{baseUrl}} HTTP/1.1
\ No newline at end of file
+GET {{baseUrl}} HTTP/1.1
+
+###
+POST {{baseUrl}}/api/webhooks?sessionId=XA0RyZ8HlVEuPPe5jBpQJ0f_7dZPwaz6 HTTP/1.1
+Content-Type: application/json
+
+{
+  "deviceId": "ffffffffceb0b1db0000018e937c815b",
+  "event": "sms:received",
+  "id": "Ey6ECgOkVVFjz3CL48B8C",
+  "payload": {
+    "message": "Android is always a sweet treat!",
+    "phoneNumber": "6505551212",
+    "receivedAt": "2024-06-22T15:46:11.000+07:00"
+  },
+  "webhookId": "web-client-ts"
+}
\ No newline at end of file
diff --git a/src/apis/gateway.ts b/src/apis/gateway.ts
new file mode 100644
index 0000000..2959092
--- /dev/null
+++ b/src/apis/gateway.ts
@@ -0,0 +1,85 @@
+import { gateway } from "../config";
+
+const BASE_URL = gateway.url;
+
+export class GatewayApi {
+    private authorization: string = "";
+
+    constructor(
+        login: string,
+        password: string,
+        private readonly url: string = BASE_URL
+    ) {
+        this.updateCredentials(login, password);
+    }
+
+    updateCredentials(login: string, password: string) {
+        this.authorization = Buffer.from(`${login}:${password}`).toString("base64");
+    }
+
+    async webhookRegister(id: string, url: string) {
+        await this.fetch("webhooks", {
+            method: "POST",
+            body: JSON.stringify({
+                id,
+                event: "sms:received",
+                url,
+            }),
+        });
+    }
+
+    async webhookUnregister(id: string) {
+        await this.fetch(`webhooks/${id}`, {
+            method: "DELETE",
+        });
+    }
+
+    async sendMessage(phoneNumber: string, message: string) {
+        await this.fetch("message", {
+            method: "POST",
+            body: JSON.stringify({
+                phoneNumbers: [
+                    phoneNumber,
+                ],
+                message,
+            }),
+        });
+    }
+
+    private async fetch(path: string, init: RequestInit) {
+        const response = await fetch(`${this.url}/${path}`, {
+            ...init,
+            headers: {
+                "Content-Type": "application/json",
+                Authorization: `Basic ${this.authorization}`,
+            },
+        });
+        if (!response.ok) {
+            if (response.status === 401) {
+                throw new UnauthorizedError();
+            }
+
+            throw new Error(`API call to ${path} failed with ${response.status} ${response.statusText}: ${await response.text()}`);
+        }
+        return response;
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+export class UnauthorizedError extends Error { }
+
+export type WebHookEventType = 'sms:received' | 'system:ping';
+
+export type WebHookPayloadSmsReceived = {
+    message: string,
+    phoneNumber: string,
+    receivedAt: string,
+};
+
+export interface WebHookEvent<T> {
+    id: string;
+    webhookId: string;
+    deviceId: string;
+    event: WebHookEventType;
+    payload: T;
+}
\ No newline at end of file
diff --git a/src/config.ts b/src/config.ts
new file mode 100644
index 0000000..387932d
--- /dev/null
+++ b/src/config.ts
@@ -0,0 +1,28 @@
+import { randomBytes } from "crypto";
+import dotenv from "dotenv";
+
+dotenv.config();
+
+export interface HttpConfig {
+    port: number;
+    sessionSecret: string;
+}
+
+export interface GatewayConfig {
+    url: string;
+    webhookUrl: string;
+}
+
+const httpPort = Number(process.env.HTTP__PORT) || Number(process.env.PORT) || 3000;
+
+export const http: HttpConfig = {
+    port: httpPort,
+    sessionSecret: process.env.HTTP__SESSION_SECRET || randomBytes(32).toString("hex"),
+}
+
+export const gateway: GatewayConfig = {
+    url: process.env.GATEWAY__URL || "https://sms.capcom.me/api/3rdparty/v1",
+    webhookUrl: process.env.GATEWAY__WEBHOOK_URL || `http://localhost:${httpPort}/api/webhooks`,
+}
+
+export const debug: boolean = process.env.NODE_ENV === "development";
diff --git a/src/index.ts b/src/index.ts
index d11d1d1..ba19700 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,15 +1,48 @@
-import express, { Express, Request, Response } from "express";
-import dotenv from "dotenv";
+import express, { Express } from "express";
+import { createServer } from "http";
+import morgan from "morgan";
+import { Server } from "socket.io";
 
-dotenv.config();
+import session from "./middlewares/session";
 
+import * as config from "./config";
+import * as api from "./routes/api";
+import * as root from "./routes/root";
+
+const port: number = config.http.port;
 const app: Express = express();
-const port = process.env.PORT || 3000;
+const server = createServer(app);
+const io = new Server(server);
+
+const sessionMiddleware = session({ secret: config.http.sessionSecret });
+
+if (config.debug) {
+    app.use(morgan("dev"));
+} else {
+    app.use(morgan("combined"));
+}
+
+io.engine.use(sessionMiddleware);
+require("./socket.io").register(io);
+
+app.use("/api", api.router);
+app.use("/", sessionMiddleware, root.router);
+
+server.listen(port, () => {
+    console.info(`[server] running at http://localhost:${port}`);
+});
+
+process.on('SIGINT', () => {
+    shutdown();
+});
 
-app.get("/", (req: Request, res: Response) => {
-    res.send("Express + TypeScript Server");
+process.on('SIGTERM', () => {
+    shutdown();
 });
 
-app.listen(port, () => {
-    console.log(`[server]: Server is running at http://localhost:${port}`);
-});
\ No newline at end of file
+function shutdown() {
+    console.debug('[server] shutting down...');
+    server.close(() => {
+        console.debug('[server] server closed')
+    });
+}
\ No newline at end of file
diff --git a/src/middlewares/session.ts b/src/middlewares/session.ts
new file mode 100644
index 0000000..4000c2a
--- /dev/null
+++ b/src/middlewares/session.ts
@@ -0,0 +1,13 @@
+import session from "express-session";
+
+export default ({ secret }: { secret: string }) => {
+    return session({
+        secret: secret,
+        resave: false,
+        saveUninitialized: true,
+        cookie: {
+            httpOnly: true,
+            secure: "auto",
+        },
+    });
+}
\ No newline at end of file
diff --git a/src/routes/api/index.ts b/src/routes/api/index.ts
new file mode 100644
index 0000000..8d9048b
--- /dev/null
+++ b/src/routes/api/index.ts
@@ -0,0 +1,7 @@
+import express from "express";
+
+export const router = express.Router();
+
+router.use(express.json());
+
+router.use('/webhooks', require('./webhooks').router)
diff --git a/src/routes/api/webhooks.ts b/src/routes/api/webhooks.ts
new file mode 100644
index 0000000..f2fe954
--- /dev/null
+++ b/src/routes/api/webhooks.ts
@@ -0,0 +1,10 @@
+import { Router } from "express";
+import { GatewayService } from "../../services/gateway";
+
+
+export const router = Router();
+
+router.post("/", (req, res) => {
+    GatewayService.processWebhook(req.query.sessionId as string, req.body);
+    res.sendStatus(200);
+});
\ No newline at end of file
diff --git a/src/routes/root.ts b/src/routes/root.ts
new file mode 100644
index 0000000..e3b41ad
--- /dev/null
+++ b/src/routes/root.ts
@@ -0,0 +1,7 @@
+import express, { Request, Response } from "express";
+
+export const router = express.Router();
+
+router.get("/", (req: Request, res: Response) => {
+    res.sendFile("index.html", { root: "./static" });
+});
\ No newline at end of file
diff --git a/src/services/gateway.ts b/src/services/gateway.ts
new file mode 100644
index 0000000..7ec2f84
--- /dev/null
+++ b/src/services/gateway.ts
@@ -0,0 +1,65 @@
+import EventEmitter from "events";
+
+import { GatewayApi, WebHookEvent, WebHookPayloadSmsReceived } from "../apis/gateway";
+import { gateway as config } from "../config";
+
+export interface MessageEvent {
+    sessionId: string;
+    phoneNumber: string;
+    message: string;
+    receivedAt: Date;
+}
+
+const WEBHOOK_ID = "web-client-ts";
+
+const sessions: Record<string, GatewayApi> = {
+
+};
+
+const events: EventEmitter<{ "message": MessageEvent[] }> = new EventEmitter();
+
+const processWebhook = (sessionId: string, event: WebHookEvent<WebHookPayloadSmsReceived>) => {
+    if (event.event !== "sms:received") {
+        return;
+    }
+
+    events.emit("message", {
+        sessionId: sessionId,
+        phoneNumber: event.payload.phoneNumber,
+        message: event.payload.message,
+        receivedAt: new Date(event.payload.receivedAt),
+    });
+}
+
+const login = async (sessionId: string, login: string, password: string) => {
+    if (!sessions[sessionId]) {
+        sessions[sessionId] = new GatewayApi(login, password);
+    }
+
+    const api = sessions[sessionId];
+    api.updateCredentials(login, password);
+    await api.webhookRegister(WEBHOOK_ID, `${config.webhookUrl}?sessionId=${sessionId}`);
+}
+
+const subscribe = (callback: (event: MessageEvent) => void) => {
+    events.on("message", callback);
+}
+
+const send = async (sessionId: string, phoneNumber: string, message: string) => {
+    const api = sessions[sessionId];
+    if (!api) {
+        throw new Error(`Session ${sessionId} not found`);
+    }
+
+    await api.sendMessage(phoneNumber, message);
+}
+
+const logout = async (sessionId: string) => {
+    const api = sessions[sessionId];
+    if (api) {
+        await api.webhookUnregister(WEBHOOK_ID);
+    }
+    delete sessions[sessionId];
+}
+
+export const GatewayService = { login, logout, send, subscribe, processWebhook }
\ No newline at end of file
diff --git a/src/socket.io/index.ts b/src/socket.io/index.ts
new file mode 100644
index 0000000..e0501f1
--- /dev/null
+++ b/src/socket.io/index.ts
@@ -0,0 +1,87 @@
+import { Server } from "socket.io";
+import { SessionIncomingMessage } from "../types";
+import { UnauthorizedError } from "../apis/gateway";
+import { GatewayService } from "../services/gateway";
+
+export const register = (io: Server) => {
+    GatewayService.subscribe((event) => {
+        io.to(event.sessionId).emit("sms:received", event);
+    });
+
+    io.on("connection", (socket) => {
+        const req = <SessionIncomingMessage>socket.request;
+
+        socket.join(req.session.id);
+
+        socket.use((data, next) => {
+            console.debug(data);
+            req.session.reload((err: any) => {
+                if (err) {
+                    console.error(err);
+                    socket.disconnect();
+                } else {
+                    next();
+                }
+            });
+        });
+
+        socket.on('login', async (data) => {
+            try {
+                await GatewayService.login(req.session.id, data.login, data.password);
+                req.session.login = data.login;
+                req.session.password = data.password;
+                req.session.save((err) => {
+                    if (err) {
+                        console.error(err);
+                    }
+                });
+
+                socket.emit('login:success');
+            } catch (error: Error | any) {
+                socket.emit('login:fail', { message: error.message });
+            }
+        });
+
+        socket.on('sms:send', async (data, callback) => {
+            try {
+                await GatewayService.send(req.session.id, data.phoneNumber, data.message);
+                callback({ success: true });
+            } catch (error: Error | any) {
+                callback({ success: false, message: error.message });
+
+                if (error instanceof UnauthorizedError) {
+                    socket.emit('login:fail', { message: error.message });
+                }
+            }
+        });
+
+        socket.on('logout', async () => {
+            try {
+                await GatewayService.logout(req.session.id);
+
+                req.session.destroy((err) => {
+                    if (err) {
+                        console.error(err);
+                    }
+                });
+            } catch (e) {
+                console.error(e);
+            }
+            socket.emit('login:fail');
+        });
+
+        console.log(`user connected: ${req.session.id}`);
+        if (req.session.login && req.session.password) {
+            socket.emit('login:success');
+        }
+
+        socket.on("disconnect", async () => {
+            try {
+                await GatewayService.logout(req.session.id);
+            } catch (e) {
+                console.error(e);
+            }
+            console.log(`user disconnected: ${req.session.id}`);
+        });
+    });
+}
\ No newline at end of file
diff --git a/src/types.d.ts b/src/types.d.ts
new file mode 100644
index 0000000..6ba842c
--- /dev/null
+++ b/src/types.d.ts
@@ -0,0 +1,18 @@
+import type { IncomingMessage } from 'http';
+import type { SessionData } from 'express-session';
+import type { Socket } from 'socket.io';
+
+declare module 'express-session' {
+    interface SessionData extends Session {
+        login: string
+        password: string
+    }
+};
+
+interface SessionIncomingMessage extends IncomingMessage {
+    session: SessionData
+};
+
+export interface SessionSocket extends Socket {
+    request: SessionIncomingMessage
+};
\ No newline at end of file
diff --git a/static/index.html b/static/index.html
new file mode 100644
index 0000000..2c63951
--- /dev/null
+++ b/static/index.html
@@ -0,0 +1,137 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>SMS Manager</title>
+    <!-- Bootstrap CSS -->
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/4.6.2/css/bootstrap.min.css"
+        integrity="sha512-rt/SrQ4UNIaGfDyEXZtNcyWvQeOq0QLygHluFQcSjaGB04IxWhal71tKuzP6K8eYXYB6vJV4pHkXcmFGGQ1/0w=="
+        crossorigin="anonymous" referrerpolicy="no-referrer" />
+    <style>
+        #managerView,
+        #loadingIndicator,
+        #loginError {
+            display: none;
+        }
+
+        #messages {
+            height: 200px;
+            overflow-y: scroll;
+            border: 1px solid #ccc;
+        }
+    </style>
+</head>
+
+<body>
+
+    <div class="container py-5">
+        <div id="loginView">
+            <form id="loginForm">
+                <div class="form-group">
+                    <label for="login">Login</label>
+                    <input type="text" class="form-control" id="login" name="login" value="">
+                </div>
+                <div class="form-group">
+                    <label for="password">Password</label>
+                    <input type="password" class="form-control" id="password" name="password" value="">
+                </div>
+                <button type="submit" class="btn btn-primary">Login</button>
+            </form>
+            <p id="loginError" class="text-danger">Login failed, please try again.</p>
+        </div>
+
+        <div id="loadingIndicator" class="text-center">
+            <div class="spinner-border text-primary" role="status">
+                <span class="sr-only">Loading...</span>
+            </div>
+        </div>
+
+        <div id="managerView">
+            <div id="messages" class="mb-3"></div>
+            <form id="sendMessageForm">
+                <div class="form-group">
+                    <label for="phoneNumber">Phone Number</label>
+                    <input type="text" class="form-control" id="phoneNumber" name="phoneNumber">
+                </div>
+                <div class="form-group">
+                    <label for="message">Message</label>
+                    <input type="text" class="form-control" id="message" name="message">
+                </div>
+                <button type="submit" class="btn btn-success">Send</button>
+            </form>
+        </div>
+    </div>
+
+    <script src="/socket.io/socket.io.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js"
+        integrity="sha512-v2CJ7UaYy4JwqLDIrZUI/4hqeoQieOmAZNXBeQyjo21dadnwR+8ZaIJVT8EE2iyI61OV8e6M8PP2/4hpQINQ/g=="
+        crossorigin="anonymous" referrerpolicy="no-referrer"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/4.6.2/js/bootstrap.min.js"
+        integrity="sha512-7rusk8kGPFynZWu26OKbTeI+QPoYchtxsmPeBqkHIEXJxeun4yJ4ISYe7C6sz9wdxeE1Gk3VxsIWgCZTc+vX3g=="
+        crossorigin="anonymous" referrerpolicy="no-referrer"></script>
+    <script>
+        document.addEventListener('DOMContentLoaded', function () {
+            const socket = io(); // Connect to server
+            const loginForm = document.getElementById('loginForm');
+            const sendMessageForm = document.getElementById('sendMessageForm');
+            const loginView = document.getElementById('loginView');
+            const managerView = document.getElementById('managerView');
+            const loginError = document.getElementById('loginError');
+            const loadingIndicator = document.getElementById('loadingIndicator');
+            const messagesDiv = document.getElementById('messages');
+
+            const excludingViews = [loginView, managerView, loadingIndicator, loginError];
+
+            loginForm.addEventListener('submit', function (e) {
+                e.preventDefault();
+                showView(loadingIndicator);
+
+                const formData = new FormData(loginForm);
+                socket.emit('login', Object.fromEntries(formData));
+            });
+
+            sendMessageForm.addEventListener('submit', function (e) {
+                e.preventDefault();
+
+                const formData = new FormData(sendMessageForm);
+
+                socket.emit(
+                    'sms:send',
+                    Object.fromEntries(formData),
+                    function (data) {
+                        if (!data.success) {
+                            alert(data.message);
+                        }
+                        console.log(data);
+                    }
+                );
+                document.getElementById('message').value = ''; // Clear input after send
+            });
+
+            socket.on('login:success', function () {
+                showView(managerView);
+            });
+
+            socket.on('login:fail', function () {
+                showView(loginView);
+                $(loginError).show();
+            });
+
+            socket.on('sms:received', function (data) {
+                const messageElement = document.createElement('div');
+                messageElement.innerHTML = `<strong>${data.phoneNumber}</strong>: ${data.message}`;
+                messagesDiv.appendChild(messageElement);
+            });
+
+            function showView(view) {
+                excludingViews.forEach(v => $(v).hide());
+                $(view).show();
+            }
+        });
+    </script>
+
+</body>
+
+</html>
\ No newline at end of file