Secure Transfer

Web application to transfer text messages and files securely.

Prerequisites

This application needs strong cryptography. Either install Java Cryptography Extension (JCE) when using Oracle JDK or use OpenJDK.

Quick start

Use prebuilt docker image osiegmar/setra or create your own via:

./gradlew build
docker build -t secure-transfer .
docker run -d --name secure-transfer secure-transfer

Then call http://[your docker host]:8080

More advanced configuration

docker run \
    --detach \
    --publish 127.0.0.1:8500:8080 \
    --name setra \
    --env SERVER_USE_FORWARD_HEADERS=true \
    osiegmar/setra

And a NGINX proxy configuration:

location / {
    proxy_pass http://localhost:8500/;

    # Keep this value in sync with SECURETRANSFER_MAX_REQUEST_SIZE
    client_max_body_size 2048M;

    proxy_buffering off;
    proxy_request_buffering off;

    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
}

Configuration properties

Secure Transfer uses Spring Boot and thus offers a wide range of configuration properties. The following is just an overview of the most important options.

SECURETRANSFER_BASE_DIR: The base directory where Secure Transfer will create its own directory structure. Default: /securetransfer within the docker build, ${java.io.tmpdir}/securetransfer otherwise.
SECURETRANSFER_MAX_FILE_SIZE: Max file size. Values can use the suffixed "MB" or "KB" to indicate a Megabyte or Kilobyte size. Default: 2147483648 (2 GB)
SECURETRANSFER_MAX_REQUEST_SIZE: Max request size. Values can use the suffixed "MB" or "KB" to indicate a Megabyte or Kilobyte size. Default: 2147483648 (2 GB)
SERVER_USE_FORWARD_HEADERS: If X-Forwarded-* headers should be applied to the HttpRequest. Default: false
SPRING_MVC_ASYNC_REQUEST_TIMEOUT: The maximum duration (in milliseconds) for a file download. Default: 3600000 ms (1 hour)

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