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70 lines
2.3 KiB
70 lines
2.3 KiB
/*
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* Copyright 2019 fsyncd, Berlin, Germany.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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use rand::RngCore;
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use sha2::{Digest, Sha256};
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use std::io::{Read, Write};
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use vsock::{SockAddr, VsockAddr, VsockStream};
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const TEST_BLOB_SIZE: usize = 1_000_000;
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const TEST_BLOCK_SIZE: usize = 5_000;
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/// A simple test for the vsock implementation.
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/// Generate a large random blob of binary data, and transfer it in chunks over the VsockStream
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/// interface. The vm enpoint is running a simple echo server, so for each chunk we will read
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/// it's reply and compute a checksum. Comparing the data sent and received confirms that the
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/// vsock implementation does not introduce corruption and properly implements the interface
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/// semantics.
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#[test]
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fn test_vsock() {
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let mut rng = rand::thread_rng();
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let mut blob: Vec<u8> = vec![];
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let mut rx_blob = vec![];
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let mut tx_pos = 0;
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blob.resize(TEST_BLOB_SIZE, 0);
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rx_blob.resize(TEST_BLOB_SIZE, 0);
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rng.fill_bytes(&mut blob);
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let mut stream =
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VsockStream::connect(&SockAddr::Vsock(VsockAddr::new(3, 8000))).expect("connection failed");
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while tx_pos < TEST_BLOB_SIZE {
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let written_bytes = stream
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.write(&blob[tx_pos..tx_pos + TEST_BLOCK_SIZE])
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.expect("write failed");
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if written_bytes == 0 {
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panic!("stream unexpectedly closed");
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}
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let mut rx_pos = tx_pos;
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while rx_pos < (tx_pos + written_bytes) {
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let read_bytes = stream.read(&mut rx_blob[rx_pos..]).expect("read failed");
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if read_bytes == 0 {
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panic!("stream unexpectedly closed");
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}
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rx_pos += read_bytes;
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}
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tx_pos += written_bytes;
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}
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let expected = Sha256::digest(&blob);
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let actual = Sha256::digest(&rx_blob);
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assert_eq!(expected, actual);
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}
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