enable sharing the binary file and use a larger buffer #2786
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examples/file-sharing.rs
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| @@ -196,6 +208,8 @@ enum CliArgument { | |||
| name: String, | |||
| }, | |||
| Get { | |||
| #[clap(long)] | |||
| path: PathBuf, | |||
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Instead of providing a file path for the retrieved file to be written to, how about leveraging unix pipelines?
E.g. one would do:
cargo run -- get [...] > my_fileWhat do you think?
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Good idea! Thanks for your advices. I've changed the output to stdout().
examples/file-sharing.rs
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| let mut reader = BufReader::new(File::open(&path)?); | ||
| let mut vec = Vec::<u8>::new(); | ||
| let mut buffer = reader.fill_buf()?; | ||
| let mut len = buffer.len(); | ||
| while len > 0 { | ||
| vec.extend_from_slice(buffer); | ||
| reader.consume(len); | ||
| buffer = reader.fill_buf()?; | ||
| len = buffer.len(); | ||
| } |
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Given that this is reading the entire file into vec, what is the difference to the previous version, i.e. std::fs::read_to_string? If you want to read an entire file as u8, why not use the below?
examples/file-sharing.rs
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| @@ -134,8 +135,7 @@ async fn main() -> Result<(), Box<dyn Error>> { | |||
| // Reply with the content of the file on incoming requests. | |||
| Some(network::Event::InboundRequest { request, channel }) => { | |||
| if request == name { | |||
| let file_content = std::fs::read_to_string(&path)?; | |||
| network_client.respond_file(file_content, channel).await; | |||
| network_client.respond_file(&std::fs::read(&path)?, channel).await; | |||
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| network_client.respond_file(&std::fs::read(&path)?, channel).await; | |
| network_client.respond_file(std::fs::read(&path)?, channel).await; |
Why borrow here when we clone again later on?
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but expected &Vec<u8> here. any better choice?
Co-authored-by: Max Inden <mail@max-inden.de>
examples/file-sharing.rs
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| pub async fn respond_file(&mut self, file: &Vec<u8>, channel: ResponseChannel<FileResponse>) { | ||
| self.sender | ||
| .send(Command::RespondFile { file, channel }) | ||
| .send(Command::RespondFile { file: file.to_vec(), channel }) |
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Nit: I think the reference on line 354 is unnecessary if we are going to create a copy anyway and it will remove the diff on line 356.
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Thanks~ |
Description
Update an examle for trasnfering a binary file
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Change checklist
I have added tests that prove my fix is effective or that my feature worksA changelog entry has been made in the appropriate crates