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44 lines
1.3 KiB
Markdown
44 lines
1.3 KiB
Markdown
# FRequest - Simple file transfer protocol - Revision 1
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FRequest is a simple file transfer protocol for use on Minitel or similar networks.
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## Requests
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A client request consists of the following:
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- A single-character request type
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- The path for the file the client is requesting
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- A newline
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Request types can be the following characters:
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- t - **t**ransfer - request file contents
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- s - **s**tat - request file size and type (format: (d or f)<size>)
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## Server responses
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The server should respond with:
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- A single character status code
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- The result of the request
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Status codes can be the following characters:
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- y - **y**es - file found, read and sent
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- d - **d**irectory - directory listing sent
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- n - **n**ot found - no such file or directory
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- f - **f**ailure - other type of failure, reason sent
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## Example exchange
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1. The client initiates a connection to the server on the FRequest port (default 70)
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2. The client sends *t* to ask for a transfer, the path *example.txt*, and a newline.
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3. The server finds the file and responds with *y* followed by the file contents.
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4. The server closes the connection when the transfer is completed.
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Servers may wish to implement restricting users to a specific directory.
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## Implementations
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- [OpenOS reference implementation](OpenOS/README.md)
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