nim-chronos/tests/testasyncstream.nim

1404 lines
52 KiB
Nim

# Chronos Test Suite
# (c) Copyright 2019-Present
# Status Research & Development GmbH
#
# Licensed under either of
# Apache License, version 2.0, (LICENSE-APACHEv2)
# MIT license (LICENSE-MIT)
import unittest2
import bearssl/[x509]
import stew/byteutils
import ".."/chronos/unittest2/asynctests
import ".."/chronos/streams/[tlsstream, chunkstream, boundstream]
{.used.}
# To create self-signed certificate and key you can use openssl
# openssl req -new -x509 -sha256 -newkey rsa:2048 -nodes \
# -keyout example-com.key.pem -days 3650 -out example-com.cert.pem
const SelfSignedRsaKey = """
-----BEGIN PRIVATE KEY-----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-----END PRIVATE KEY-----
"""
# This SSL certificate will expire 13 October 2030.
const SelfSignedRsaCert = """
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
"""
let SelfSignedTrustAnchors {.importc: "SelfSignedTAs".}: array[1, X509TrustAnchor]
{.compile: "testasyncstream.c".}
proc createBigMessage(message: string, size: int): seq[byte] =
var res = newSeq[byte](size)
for i in 0 ..< len(res):
res[i] = byte(ord(message[i mod len(message)]))
res
suite "AsyncStream test suite":
teardown:
checkLeaks()
test "AsyncStream(StreamTransport) readExactly() test":
proc testReadExactly(): Future[bool] {.async.} =
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
await wstream.write("000000000011111111112222222222")
await wstream.finish()
await wstream.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
var buffer = newSeq[byte](10)
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ReuseAddr})
server.start()
var transp = await connect(server.localAddress())
var rstream = newAsyncStreamReader(transp)
await rstream.readExactly(addr buffer[0], 10)
check string.fromBytes(buffer) == "0000000000"
await rstream.readExactly(addr buffer[0], 10)
check string.fromBytes(buffer) == "1111111111"
await rstream.readExactly(addr buffer[0], 10)
check string.fromBytes(buffer) == "2222222222"
await rstream.closeWait()
await transp.closeWait()
await server.join()
result = true
check waitFor(testReadExactly()) == true
test "AsyncStream(StreamTransport) readUntil() test":
proc testReadUntil(): Future[bool] {.async.} =
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
await wstream.write("0000000000NNz1111111111NNz2222222222NNz")
await wstream.finish()
await wstream.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
var buffer = newSeq[byte](13)
var sep = @[byte('N'), byte('N'), byte('z')]
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ReuseAddr})
server.start()
var transp = await connect(server.localAddress())
var rstream = newAsyncStreamReader(transp)
var r1 = await rstream.readUntil(addr buffer[0], len(buffer), sep)
check:
r1 == 13
string.fromBytes(buffer) == "0000000000NNz"
var r2 = await rstream.readUntil(addr buffer[0], len(buffer), sep)
check:
r2 == 13
string.fromBytes(buffer) == "1111111111NNz"
var r3 = await rstream.readUntil(addr buffer[0], len(buffer), sep)
check:
r3 == 13
string.fromBytes(buffer) == "2222222222NNz"
await rstream.closeWait()
await transp.closeWait()
await server.join()
result = true
check waitFor(testReadUntil()) == true
test "AsyncStream(StreamTransport) readLine() test":
proc testReadLine(): Future[bool] {.async.} =
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
await wstream.write("0000000000\r\n1111111111\r\n2222222222\r\n")
await wstream.finish()
await wstream.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ReuseAddr})
server.start()
var transp = await connect(server.localAddress())
var rstream = newAsyncStreamReader(transp)
var r1 = await rstream.readLine()
check r1 == "0000000000"
var r2 = await rstream.readLine()
check r2 == "1111111111"
var r3 = await rstream.readLine()
check r3 == "2222222222"
await rstream.closeWait()
await transp.closeWait()
await server.join()
result = true
check waitFor(testReadLine()) == true
test "AsyncStream(StreamTransport) read() test":
proc testRead(): Future[bool] {.async.} =
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
await wstream.write("000000000011111111112222222222")
await wstream.finish()
await wstream.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ReuseAddr})
server.start()
var transp = await connect(server.localAddress())
var rstream = newAsyncStreamReader(transp)
var buf1 = await rstream.read(10)
check string.fromBytes(buf1) == "0000000000"
var buf2 = await rstream.read()
check string.fromBytes(buf2) == "11111111112222222222"
await rstream.closeWait()
await transp.closeWait()
await server.join()
result = true
check waitFor(testRead()) == true
test "AsyncStream(StreamTransport) consume() test":
proc testConsume(): Future[bool] {.async.} =
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
await wstream.write("0000000000111111111122222222223333333333")
await wstream.finish()
await wstream.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ReuseAddr})
server.start()
var transp = await connect(server.localAddress())
var rstream = newAsyncStreamReader(transp)
var res1 = await rstream.consume(10)
check:
res1 == 10
var buf1 = await rstream.read(10)
check string.fromBytes(buf1) == "1111111111"
var res2 = await rstream.consume(10)
check:
res2 == 10
var buf2 = await rstream.read(10)
check string.fromBytes(buf2) == "3333333333"
await rstream.closeWait()
await transp.closeWait()
await server.join()
result = true
check waitFor(testConsume()) == true
test "AsyncStream(AsyncStream) readExactly() test":
proc testReadExactly2(): Future[bool] {.async.} =
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
var wstream2 = newChunkedStreamWriter(wstream)
var s1 = "00000"
var s2 = "11111"
var s3 = "22222"
await wstream2.write("00000")
await wstream2.write(addr s1[0], len(s1))
await wstream2.write("11111")
await wstream2.write(s2.toBytes())
await wstream2.write("22222")
await wstream2.write(addr s3[0], len(s3))
await wstream2.finish()
await wstream.finish()
await wstream2.closeWait()
await wstream.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
var buffer = newSeq[byte](10)
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ReuseAddr})
server.start()
var transp = await connect(server.localAddress())
var rstream = newAsyncStreamReader(transp)
var rstream2 = newChunkedStreamReader(rstream)
await rstream2.readExactly(addr buffer[0], 10)
check string.fromBytes(buffer) == "0000000000"
await rstream2.readExactly(addr buffer[0], 10)
check string.fromBytes(buffer) == "1111111111"
await rstream2.readExactly(addr buffer[0], 10)
check string.fromBytes(buffer) == "2222222222"
# We need to consume all the stream with finish markers, but there will
# be no actual data.
let left = await rstream2.consume()
check:
left == 0
rstream2.atEof() == true
await rstream2.closeWait()
await rstream.closeWait()
await transp.closeWait()
await server.join()
result = true
check waitFor(testReadExactly2()) == true
test "AsyncStream(AsyncStream) readUntil() test":
proc testReadUntil2(): Future[bool] {.async.} =
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
var wstream2 = newChunkedStreamWriter(wstream)
var s1 = "00000NNz"
var s2 = "11111NNz"
var s3 = "22222NNz"
await wstream2.write("00000")
await wstream2.write(addr s1[0], len(s1))
await wstream2.write("11111")
await wstream2.write(s2)
await wstream2.write("22222")
await wstream2.write(s3.toBytes())
await wstream2.finish()
await wstream.finish()
await wstream2.closeWait()
await wstream.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
var buffer = newSeq[byte](13)
var sep = @[byte('N'), byte('N'), byte('z')]
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ReuseAddr})
server.start()
var transp = await connect(server.localAddress())
var rstream = newAsyncStreamReader(transp)
var rstream2 = newChunkedStreamReader(rstream)
var r1 = await rstream2.readUntil(addr buffer[0], len(buffer), sep)
check:
r1 == 13
string.fromBytes(buffer) == "0000000000NNz"
var r2 = await rstream2.readUntil(addr buffer[0], len(buffer), sep)
check:
r2 == 13
string.fromBytes(buffer) == "1111111111NNz"
var r3 = await rstream2.readUntil(addr buffer[0], len(buffer), sep)
check:
r3 == 13
string.fromBytes(buffer) == "2222222222NNz"
# We need to consume all the stream with finish markers, but there will
# be no actual data.
let left = await rstream2.consume()
check:
left == 0
rstream2.atEof() == true
await rstream2.closeWait()
await rstream.closeWait()
await transp.closeWait()
await server.join()
result = true
check waitFor(testReadUntil2()) == true
test "AsyncStream(AsyncStream) readLine() test":
proc testReadLine2(): Future[bool] {.async.} =
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
var wstream2 = newChunkedStreamWriter(wstream)
await wstream2.write("00000")
await wstream2.write("00000\r\n")
await wstream2.write("11111")
await wstream2.write("11111\r\n")
await wstream2.write("22222")
await wstream2.write("22222\r\n")
await wstream2.finish()
await wstream.finish()
await wstream2.closeWait()
await wstream.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ReuseAddr})
server.start()
var transp = await connect(server.localAddress())
var rstream = newAsyncStreamReader(transp)
var rstream2 = newChunkedStreamReader(rstream)
var r1 = await rstream2.readLine()
check r1 == "0000000000"
var r2 = await rstream2.readLine()
check r2 == "1111111111"
var r3 = await rstream2.readLine()
check r3 == "2222222222"
# We need to consume all the stream with finish markers, but there will
# be no actual data.
let left = await rstream2.consume()
check:
left == 0
rstream2.atEof() == true
await rstream2.closeWait()
await rstream.closeWait()
await transp.closeWait()
await server.join()
result = true
check waitFor(testReadLine2()) == true
test "AsyncStream(AsyncStream) read() test":
proc testRead2(): Future[bool] {.async.} =
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
var wstream2 = newChunkedStreamWriter(wstream)
var s2 = "1111111111"
var s3 = "2222222222"
await wstream2.write("0000000000")
await wstream2.write(s2)
await wstream2.write(s3.toBytes())
await wstream2.finish()
await wstream.finish()
await wstream2.closeWait()
await wstream.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ReuseAddr})
server.start()
var transp = await connect(server.localAddress())
var rstream = newAsyncStreamReader(transp)
var rstream2 = newChunkedStreamReader(rstream)
var buf1 = await rstream2.read(10)
check string.fromBytes(buf1) == "0000000000"
var buf2 = await rstream2.read()
check string.fromBytes(buf2) == "11111111112222222222"
# read() call will consume all the bytes and finish markers too, so
# we just check stream for EOF.
check rstream2.atEof() == true
await rstream2.closeWait()
await rstream.closeWait()
await transp.closeWait()
await server.join()
result = true
check waitFor(testRead2()) == true
test "AsyncStream(AsyncStream) consume() test":
proc testConsume2(): Future[bool] {.async.} =
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
const
S4 = @[byte('3'), byte('3'), byte('3'), byte('3'), byte('3')]
var wstream = newAsyncStreamWriter(transp)
var wstream2 = newChunkedStreamWriter(wstream)
var s1 = "00000"
var s2 = "11111".toBytes()
var s3 = "22222"
await wstream2.write("00000")
await wstream2.write(s1)
await wstream2.write("11111")
await wstream2.write(s2)
await wstream2.write("22222")
await wstream2.write(addr s3[0], len(s3))
await wstream2.write("33333")
await wstream2.write(S4)
await wstream2.finish()
await wstream.finish()
await wstream2.closeWait()
await wstream.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ReuseAddr})
server.start()
var transp = await connect(server.localAddress())
var rstream = newAsyncStreamReader(transp)
var rstream2 = newChunkedStreamReader(rstream)
var res1 = await rstream2.consume(10)
check:
res1 == 10
var buf1 = await rstream2.read(10)
check string.fromBytes(buf1) == "1111111111"
var res2 = await rstream2.consume(10)
check:
res2 == 10
var buf2 = await rstream2.read(10)
check string.fromBytes(buf2) == "3333333333"
# We need to consume all the stream with finish markers, but there will
# be no actual data.
let left = await rstream2.consume()
check:
left == 0
rstream2.atEof() == true
await rstream2.closeWait()
await rstream.closeWait()
await transp.closeWait()
await server.join()
result = true
check waitFor(testConsume2()) == true
test "AsyncStream(AsyncStream) write(eof) test":
proc testWriteEof(): Future[bool] {.async.} =
let
size = 10240
message = createBigMessage("ABCDEFGHIJKLMNOP", size)
proc processClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
var wbstream = newBoundedStreamWriter(wstream, uint64(size))
try:
check wbstream.atEof() == false
await wbstream.write(message)
check wbstream.atEof() == false
await wbstream.finish()
check wbstream.atEof() == true
expect AsyncStreamWriteEOFError:
await wbstream.write(message)
expect AsyncStreamWriteEOFError:
await wbstream.write(message)
expect AsyncStreamWriteEOFError:
await wbstream.write(message)
check wbstream.atEof() == true
await wbstream.closeWait()
check wbstream.atEof() == true
finally:
await wstream.closeWait()
await transp.closeWait()
except CatchableError as exc:
raiseAssert exc.msg
let flags = {ServerFlags.ReuseAddr, ServerFlags.TcpNoDelay}
var server = createStreamServer(initTAddress("127.0.0.1:0"),
processClient, flags = flags)
server.start()
var conn = await connect(server.localAddress())
try:
discard await conn.consume()
finally:
await conn.closeWait()
server.stop()
await server.closeWait()
return true
check waitFor(testWriteEof()) == true
suite "ChunkedStream test suite":
teardown:
checkLeaks()
test "ChunkedStream test vectors":
const ChunkedVectors = [
["4\r\nWiki\r\n5\r\npedia\r\nE\r\n in\r\n\r\nchunks.\r\n0\r\n\r\n",
"Wikipedia in\r\n\r\nchunks."],
["4\r\nWiki\r\n5\r\npedia\r\nE\r\n in\r\n\r\nchunks.\r\n0\r\n\r\n0\r\n\r\n",
"Wikipedia in\r\n\r\nchunks."],
["3b\r\n--f98f0\r\nContent-Disposition: form-data; name=\"key1\"" &
"\r\n\r\nA\r\n\r\n" &
"3b\r\n--f98f0\r\nContent-Disposition: form-data; name=\"key2\"" &
"\r\n\r\nB\r\n\r\n" &
"3b\r\n--f98f0\r\nContent-Disposition: form-data; name=\"key3\"" &
"\r\n\r\nC\r\n\r\n" &
"b\r\n--f98f0--\r\n\r\n" &
"0\r\n\r\n",
"--f98f0\r\nContent-Disposition: form-data; name=\"key1\"" &
"\r\n\r\nA\r\n" &
"--f98f0\r\nContent-Disposition: form-data; name=\"key2\"" &
"\r\n\r\nB\r\n" &
"--f98f0\r\nContent-Disposition: form-data; name=\"key3\"" &
"\r\n\r\nC\r\n" &
"--f98f0--\r\n"
],
["4;position=1\r\nWiki\r\n5;position=2\r\npedia\r\nE;position=3\r\n" &
" in\r\n\r\nchunks.\r\n0;position=4\r\n\r\n",
"Wikipedia in\r\n\r\nchunks."],
]
proc checkVector(inputstr: string): Future[string] {.async.} =
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
var data = inputstr
await wstream.write(data)
await wstream.finish()
await wstream.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ReuseAddr})
server.start()
var transp = await connect(server.localAddress())
var rstream = newAsyncStreamReader(transp)
var rstream2 = newChunkedStreamReader(rstream)
var res = await rstream2.read()
var ress = string.fromBytes(res)
await rstream2.closeWait()
await rstream.closeWait()
await transp.closeWait()
await server.join()
result = ress
proc testVectors(): Future[bool] {.async.} =
var res = true
for i in 0..<len(ChunkedVectors):
var r = await checkVector(ChunkedVectors[i][0])
if r != ChunkedVectors[i][1]:
res = false
break
result = res
check waitFor(testVectors()) == true
test "ChunkedStream incorrect chunk test":
const BadVectors = [
["10000000;\r\n1"],
["10000000\r\n1"],
["FFFFFFFF;extension1=value1;extension2=value2\r\n1"],
["FFFFFFFF\r\n1"],
["100000000\r\n1"],
["10000000 \r\n1"],
["100000000 ;\r\n"],
["FFFFFFFF0\r\n1"],
["FFFFFFFF \r\n1"],
["FFFFFFFF ;\r\n1"],
["z\r\n1"]
]
proc checkVector(inputstr: string): Future[bool] {.async.} =
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
var data = inputstr
await wstream.write(data)
await wstream.finish()
await wstream.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
var res = false
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ReuseAddr})
server.start()
var transp = await connect(server.localAddress())
var rstream = newAsyncStreamReader(transp)
var rstream2 = newChunkedStreamReader(rstream)
try:
var r = await rstream2.read()
doAssert(len(r) > 0)
except ChunkedStreamIncompleteError:
case inputstr
of "10000000;\r\n1":
res = true
of "10000000\r\n1":
res = true
of "FFFFFFFF;extension1=value1;extension2=value2\r\n1":
res = true
of "FFFFFFFF\r\n1":
res = true
else:
res = false
except ChunkedStreamProtocolError:
case inputstr
of "100000000\r\n1":
res = true
of "10000000 \r\n1":
res = true
of "100000000 ;\r\n":
res = true
of "z\r\n1":
res = true
of "FFFFFFFF0\r\n1":
res = true
of "FFFFFFFF \r\n1":
res = true
of "FFFFFFFF ;\r\n1":
res = true
else:
res = false
await rstream2.closeWait()
await rstream.closeWait()
await transp.closeWait()
await server.join()
result = res
proc testVectors2(): Future[bool] {.async.} =
var res = true
for i in 0..<len(BadVectors):
var r = await checkVector(BadVectors[i][0])
if not(r):
res = false
break
result = res
check waitFor(testVectors2()) == true
test "ChunkedStream hex decoding test":
for i in 0 ..< 256:
let ch = char(i)
case ch
of '0' .. '9':
check hexValue(byte(ch)) == ord(ch) - ord('0')
of 'a' .. 'f':
check hexValue(byte(ch)) == ord(ch) - ord('a') + 10
of 'A' .. 'F':
check hexValue(byte(ch)) == ord(ch) - ord('A') + 10
else:
check hexValue(byte(ch)) == -1
test "ChunkedStream too big chunk header test":
proc checkTooBigChunkHeader(inputstr: seq[byte]): Future[bool] {.async.} =
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
await wstream.write(inputstr)
await wstream.finish()
await wstream.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ReuseAddr})
server.start()
var transp = await connect(server.localAddress())
var rstream = newAsyncStreamReader(transp)
var rstream2 = newChunkedStreamReader(rstream)
let res =
try:
var datares {.used.} = await rstream2.read()
false
except ChunkedStreamProtocolError:
true
except CatchableError:
false
await rstream2.closeWait()
await rstream.closeWait()
await transp.closeWait()
await server.join()
return res
var data1 = createBigMessage("REQUESTSTREAMMESSAGE", 65600)
var data2 = createBigMessage("REQUESTSTREAMMESSAGE", 262400)
check waitFor(checkTooBigChunkHeader(data1)) == true
check waitFor(checkTooBigChunkHeader(data2)) == true
test "ChunkedStream read/write test":
proc checkVector(inputstr: seq[byte],
chunkSize: int): Future[seq[byte]] {.async.} =
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
var wstream2 = newChunkedStreamWriter(wstream)
var data = inputstr
var offset = 0
while true:
if len(data) == offset:
break
let toWrite = min(chunkSize, len(data) - offset)
await wstream2.write(addr data[offset], toWrite)
offset = offset + toWrite
await wstream2.finish()
await wstream2.closeWait()
await wstream.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ReuseAddr})
server.start()
var transp = await connect(server.localAddress())
var rstream = newAsyncStreamReader(transp)
var rstream2 = newChunkedStreamReader(rstream)
var res = await rstream2.read()
await rstream2.closeWait()
await rstream.closeWait()
await transp.closeWait()
await server.join()
return res
proc testBigData(datasize: int, chunksize: int): Future[bool] {.async.} =
var data = createBigMessage("REQUESTSTREAMMESSAGE", datasize)
var check = await checkVector(data, chunksize)
return (data == check)
check waitFor(testBigData(65600, 1024)) == true
check waitFor(testBigData(262400, 4096)) == true
check waitFor(testBigData(767309, 4457)) == true
test "ChunkedStream read small chunks test":
proc checkVector(inputstr: seq[byte],
writeChunkSize: int,
readChunkSize: int): Future[seq[byte]] {.async.} =
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
var wstream2 = newChunkedStreamWriter(wstream)
var data = inputstr
var offset = 0
while true:
if len(data) == offset:
break
let toWrite = min(writeChunkSize, len(data) - offset)
await wstream2.write(addr data[offset], toWrite)
offset = offset + toWrite
await wstream2.finish()
await wstream2.closeWait()
await wstream.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ReuseAddr})
server.start()
var transp = await connect(server.localAddress())
var rstream = newAsyncStreamReader(transp)
var rstream2 = newChunkedStreamReader(rstream)
var res: seq[byte]
while not(rstream2.atEof()):
var chunk = await rstream2.read(readChunkSize)
res.add(chunk)
await rstream2.closeWait()
await rstream.closeWait()
await transp.closeWait()
await server.join()
return res
proc testSmallChunk(datasize: int,
writeChunkSize: int,
readChunkSize: int): Future[bool] {.async.} =
var data = createBigMessage("REQUESTSTREAMMESSAGE", datasize)
var check = await checkVector(data, writeChunkSize, readChunkSize)
return (data == check)
check waitFor(testSmallChunk(4457, 128, 1)) == true
check waitFor(testSmallChunk(65600, 1024, 17)) == true
check waitFor(testSmallChunk(262400, 4096, 61)) == true
check waitFor(testSmallChunk(767309, 4457, 173)) == true
suite "TLSStream test suite":
teardown:
checkLeaks()
const HttpHeadersMark = @[byte(0x0D), byte(0x0A), byte(0x0D), byte(0x0A)]
test "Simple HTTPS connection":
proc headerClient(address: TransportAddress,
name: string): Future[bool] {.async: (raises: []).} =
try:
var mark = "HTTP/1.1 "
var buffer = newSeq[byte](8192)
var transp = await connect(address)
var reader = newAsyncStreamReader(transp)
var writer = newAsyncStreamWriter(transp)
var tlsstream = newTLSClientAsyncStream(reader, writer, name)
await tlsstream.writer.write("GET / HTTP/1.1\r\nHost: " & name &
"\r\nConnection: close\r\n\r\n")
var readFut = tlsstream.reader.readUntil(addr buffer[0], len(buffer),
HttpHeadersMark)
let res = await withTimeout(readFut, 5.seconds)
if res:
var length = readFut.read()
buffer.setLen(length)
if len(buffer) > len(mark):
if equalMem(addr buffer[0], addr mark[0], len(mark)):
result = true
await tlsstream.reader.closeWait()
await tlsstream.writer.closeWait()
await reader.closeWait()
await writer.closeWait()
await transp.closeWait()
except CatchableError as exc:
raiseAssert exc.msg
let res = waitFor(headerClient(resolveTAddress("www.google.com:443")[0],
"www.google.com"))
check res == true
proc checkSSLServer(pemkey, pemcert: string): Future[bool] {.async.} =
var key: TLSPrivateKey
var cert: TLSCertificate
let testMessage = "TEST MESSAGE"
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var reader = newAsyncStreamReader(transp)
var writer = newAsyncStreamWriter(transp)
var sstream = newTLSServerAsyncStream(reader, writer, key, cert)
await handshake(sstream)
await sstream.writer.write(testMessage & "\r\n")
await sstream.writer.finish()
await sstream.writer.closeWait()
await sstream.reader.closeWait()
await reader.closeWait()
await writer.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
key = TLSPrivateKey.init(pemkey)
cert = TLSCertificate.init(pemcert)
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ServerFlags.ReuseAddr})
server.start()
var conn = await connect(server.localAddress())
var creader = newAsyncStreamReader(conn)
var cwriter = newAsyncStreamWriter(conn)
# We are using self-signed certificate
let flags = {NoVerifyHost, NoVerifyServerName}
var cstream = newTLSClientAsyncStream(creader, cwriter, "", flags = flags)
let res = await cstream.reader.read()
await cstream.reader.closeWait()
await cstream.writer.closeWait()
await creader.closeWait()
await cwriter.closeWait()
await conn.closeWait()
await server.join()
return string.fromBytes(res) == (testMessage & "\r\n")
test "Simple server with RSA self-signed certificate":
let res = waitFor(checkSSLServer(SelfSignedRsaKey, SelfSignedRsaCert))
check res == true
test "Custom TrustAnchors test":
proc checkTrustAnchors(testMessage: string): Future[string] {.async.} =
var key = TLSPrivateKey.init(SelfSignedRsaKey)
var cert = TLSCertificate.init(SelfSignedRsaCert)
let trustAnchors = TrustAnchorStore.new(SelfSignedTrustAnchors)
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var reader = newAsyncStreamReader(transp)
var writer = newAsyncStreamWriter(transp)
var sstream = newTLSServerAsyncStream(reader, writer, key, cert)
await handshake(sstream)
await sstream.writer.write(testMessage & "\r\n")
await sstream.writer.finish()
await sstream.writer.closeWait()
await sstream.reader.closeWait()
await reader.closeWait()
await writer.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ReuseAddr})
server.start()
var conn = await connect(server.localAddress())
var creader = newAsyncStreamReader(conn)
var cwriter = newAsyncStreamWriter(conn)
let flags = {NoVerifyServerName}
var cstream = newTLSClientAsyncStream(creader, cwriter, "", flags = flags,
trustAnchors = trustAnchors)
let res = await cstream.reader.read()
await cstream.reader.closeWait()
await cstream.writer.closeWait()
await creader.closeWait()
await cwriter.closeWait()
await conn.closeWait()
await server.join()
return string.fromBytes(res)
let res = waitFor checkTrustAnchors("Some message")
check res == "Some message\r\n"
suite "BoundedStream test suite":
teardown:
checkLeaks()
type
BoundarySizeTest = enum
SizeReadWrite, SizeOverflow, SizeIncomplete, SizeEmpty
BoundaryBytesTest = enum
BoundaryRead, BoundaryDouble, BoundarySize, BoundaryIncomplete,
BoundaryEmpty
for itemComp in [BoundCmp.Equal, BoundCmp.LessOrEqual]:
for itemSize in [100, 60000]:
proc boundaryTest(btest: BoundaryBytesTest,
size: int, boundary: seq[byte],
cmp: BoundCmp): Future[bool] {.async.} =
var message = createBigMessage("ABCDEFGHIJKLMNOP", size)
var clientRes = false
proc processClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
case btest
of BoundaryRead:
await wstream.write(message)
await wstream.write(boundary)
await wstream.finish()
await wstream.closeWait()
clientRes = true
of BoundaryDouble:
await wstream.write(message)
await wstream.write(boundary)
await wstream.write(message)
await wstream.finish()
await wstream.closeWait()
clientRes = true
of BoundarySize:
var ncmessage = message
ncmessage.setLen(len(message) - 2)
await wstream.write(ncmessage)
await wstream.write(@[0x2D'u8, 0x2D'u8])
await wstream.finish()
await wstream.closeWait()
clientRes = true
of BoundaryIncomplete:
var ncmessage = message
ncmessage.setLen(len(message) - 2)
await wstream.write(ncmessage)
await wstream.finish()
await wstream.closeWait()
clientRes = true
of BoundaryEmpty:
await wstream.write(boundary)
await wstream.finish()
await wstream.closeWait()
clientRes = true
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
var res = false
let flags = {ServerFlags.ReuseAddr, ServerFlags.TcpNoDelay}
var server = createStreamServer(initTAddress("127.0.0.1:0"),
processClient, flags = flags)
server.start()
var conn = await connect(server.localAddress())
var rstream = newAsyncStreamReader(conn)
case btest
of BoundaryRead:
var rbstream = newBoundedStreamReader(rstream, boundary)
let response = await rbstream.read()
if response == message:
res = true
await rbstream.closeWait()
of BoundaryDouble:
var rbstream = newBoundedStreamReader(rstream, boundary)
let response1 = await rbstream.read()
await rbstream.closeWait()
let response2 = await rstream.read()
if (response1 == message) and (response2 == message):
res = true
of BoundarySize:
var expectMessage = message
expectMessage[^2] = 0x2D'u8
expectMessage[^1] = 0x2D'u8
var rbstream = newBoundedStreamReader(rstream, uint64(size), boundary)
let response = await rbstream.read()
await rbstream.closeWait()
if (len(response) == size) and response == expectMessage:
res = true
of BoundaryIncomplete:
var rbstream = newBoundedStreamReader(rstream, boundary)
try:
let response {.used.} = await rbstream.read()
except BoundedStreamIncompleteError:
res = true
await rbstream.closeWait()
of BoundaryEmpty:
var rbstream = newBoundedStreamReader(rstream, boundary)
let response = await rbstream.read()
await rbstream.closeWait()
if len(response) == 0:
res = true
await rstream.closeWait()
await conn.closeWait()
await server.join()
return (res and clientRes)
proc boundedTest(stest: BoundarySizeTest,
size: int, cmp: BoundCmp): Future[bool] {.async.} =
var clientRes = false
var res = false
let messagePart = createBigMessage("ABCDEFGHIJKLMNOP",
int(itemSize) div 10)
var message: seq[byte]
for i in 0 ..< 10:
message.add(messagePart)
proc processClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
var wbstream = newBoundedStreamWriter(wstream, uint64(size),
comparison = cmp)
case stest
of SizeReadWrite:
for i in 0 ..< 10:
await wbstream.write(messagePart)
await wbstream.finish()
await wbstream.closeWait()
clientRes = true
of SizeOverflow:
for i in 0 ..< 10:
await wbstream.write(messagePart)
try:
await wbstream.write(messagePart)
except BoundedStreamOverflowError:
clientRes = true
await wbstream.closeWait()
of SizeIncomplete:
for i in 0 ..< 9:
await wbstream.write(messagePart)
case cmp
of BoundCmp.Equal:
try:
await wbstream.finish()
except BoundedStreamIncompleteError:
clientRes = true
of BoundCmp.LessOrEqual:
try:
await wbstream.finish()
clientRes = true
except BoundedStreamIncompleteError:
discard
await wbstream.closeWait()
of SizeEmpty:
case cmp
of BoundCmp.Equal:
try:
await wbstream.finish()
except BoundedStreamIncompleteError:
clientRes = true
of BoundCmp.LessOrEqual:
try:
await wbstream.finish()
clientRes = true
except BoundedStreamIncompleteError:
discard
await wbstream.closeWait()
await wstream.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
let flags = {ServerFlags.ReuseAddr, ServerFlags.TcpNoDelay}
var server = createStreamServer(initTAddress("127.0.0.1:0"),
processClient, flags = flags)
server.start()
var conn = await connect(server.localAddress())
var rstream = newAsyncStreamReader(conn)
var rbstream = newBoundedStreamReader(rstream, uint64(size),
comparison = cmp)
case stest
of SizeReadWrite:
let response = await rbstream.read()
await rbstream.closeWait()
if response == message:
res = true
of SizeOverflow:
let response = await rbstream.read()
await rbstream.closeWait()
if response == message:
res = true
of SizeIncomplete:
case cmp
of BoundCmp.Equal:
try:
let response {.used.} = await rbstream.read()
except BoundedStreamIncompleteError:
res = true
of BoundCmp.LessOrEqual:
try:
let response = await rbstream.read()
if len(response) == 9 * len(messagePart):
res = true
except BoundedStreamIncompleteError:
res = false
await rbstream.closeWait()
of SizeEmpty:
case cmp
of BoundCmp.Equal:
try:
let response {.used.} = await rbstream.read()
except BoundedStreamIncompleteError:
res = true
of BoundCmp.LessOrEqual:
try:
let response = await rbstream.read()
if len(response) == 0:
res = true
except BoundedStreamIncompleteError:
res = false
await rbstream.closeWait()
await rstream.closeWait()
await conn.closeWait()
await server.join()
return (res and clientRes)
let suffix =
case itemComp
of BoundCmp.Equal:
"== " & $itemSize
of BoundCmp.LessOrEqual:
"<= " & $itemSize
test "BoundedStream(size) reading/writing test [" & suffix & "]":
check waitFor(boundedTest(SizeReadWrite, itemSize,
itemComp)) == true
test "BoundedStream(size) overflow test [" & suffix & "]":
check waitFor(boundedTest(SizeOverflow, itemSize,
itemComp)) == true
test "BoundedStream(size) incomplete test [" & suffix & "]":
check waitFor(boundedTest(SizeIncomplete, itemSize,
itemComp)) == true
test "BoundedStream(size) empty message test [" & suffix & "]":
check waitFor(boundedTest(SizeEmpty, itemSize,
itemComp)) == true
test "BoundedStream(boundary) reading test [" & suffix & "]":
check waitFor(boundaryTest(BoundaryRead, itemSize,
@[0x2D'u8, 0x2D'u8, 0x2D'u8], itemComp))
test "BoundedStream(boundary) double message test [" & suffix & "]":
check waitFor(boundaryTest(BoundaryDouble, itemSize,
@[0x2D'u8, 0x2D'u8, 0x2D'u8], itemComp))
test "BoundedStream(size+boundary) reading size-bound test [" &
suffix & "]":
check waitFor(boundaryTest(BoundarySize, itemSize,
@[0x2D'u8, 0x2D'u8, 0x2D'u8], itemComp))
test "BoundedStream(boundary) reading incomplete test [" &
suffix & "]":
check waitFor(boundaryTest(BoundaryIncomplete, itemSize,
@[0x2D'u8, 0x2D'u8, 0x2D'u8], itemComp))
test "BoundedStream(boundary) empty message test [" &
suffix & "]":
check waitFor(boundaryTest(BoundaryEmpty, itemSize,
@[0x2D'u8, 0x2D'u8, 0x2D'u8], itemComp))
test "BoundedStream read small chunks test":
proc checkVector(inputstr: seq[byte],
writeChunkSize: int,
readChunkSize: int): Future[seq[byte]] {.async.} =
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
var wstream2 = newBoundedStreamWriter(wstream, uint64(len(inputstr)))
var data = inputstr
var offset = 0
while true:
if len(data) == offset:
break
let toWrite = min(writeChunkSize, len(data) - offset)
await wstream2.write(addr data[offset], toWrite)
offset = offset + toWrite
await wstream2.finish()
await wstream2.closeWait()
await wstream.closeWait()
await transp.closeWait()
server.stop()
server.close()
except CatchableError as exc:
raiseAssert exc.msg
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ReuseAddr})
server.start()
var transp = await connect(server.localAddress())
var rstream = newAsyncStreamReader(transp)
var rstream2 = newBoundedStreamReader(rstream, 1048576,
comparison = BoundCmp.LessOrEqual)
var res: seq[byte]
while not(rstream2.atEof()):
var chunk = await rstream2.read(readChunkSize)
res.add(chunk)
await rstream2.closeWait()
await rstream.closeWait()
await transp.closeWait()
await server.join()
return res
proc testSmallChunk(datasize: int, writeChunkSize: int,
readChunkSize: int): Future[bool] {.async.} =
var data = createBigMessage("0123456789ABCDEFGHI", datasize)
var check = await checkVector(data, writeChunkSize, readChunkSize)
return (data == check)
check waitFor(testSmallChunk(4457, 128, 1)) == true
check waitFor(testSmallChunk(65600, 1024, 17)) == true
check waitFor(testSmallChunk(262400, 4096, 61)) == true
check waitFor(testSmallChunk(767309, 4457, 173)) == true
test "BoundedStream zero-sized streams test":
proc checkEmptyStreams(): Future[bool] {.async.} =
var writer1Res = false
proc serveClient(server: StreamServer,
transp: StreamTransport) {.async: (raises: []).} =
try:
var wstream = newAsyncStreamWriter(transp)
var wstream2 = newBoundedStreamWriter(wstream, 0'u64)
await wstream2.finish()
let res = wstream2.atEof()
await wstream2.closeWait()
await wstream.closeWait()
await transp.closeWait()
server.stop()
server.close()
writer1Res = res
except CatchableError as exc:
raiseAssert exc.msg
var server = createStreamServer(initTAddress("127.0.0.1:0"),
serveClient, {ReuseAddr})
server.start()
var transp = await connect(server.localAddress())
var rstream = newAsyncStreamReader(transp)
var wstream3 = newAsyncStreamWriter(transp)
var rstream2 = newBoundedStreamReader(rstream, 0'u64)
var wstream4 = newBoundedStreamWriter(wstream3, 0'u64)
let readerRes = rstream2.atEof()
let writer2Res =
try:
await wstream4.write("data")
false
except BoundedStreamOverflowError:
true
except CatchableError:
false
await wstream4.closeWait()
await wstream3.closeWait()
await rstream2.closeWait()
await rstream.closeWait()
await transp.closeWait()
await server.join()
return (writer1Res and writer2Res and readerRes)
check waitFor(checkEmptyStreams()) == true