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//===----------------------------------------------------------------------===//
//
// This source file is part of the SwiftNIO open source project
//
// Copyright (c) 2017-2018 Apple Inc. and the SwiftNIO project authors
// Licensed under Apache License v2.0
//
// See LICENSE.txt for license information
// See CONTRIBUTORS.txt for the list of SwiftNIO project authors
//
// SPDX-License-Identifier: Apache-2.0
//
//===----------------------------------------------------------------------===//
import XCTest
@testable import NIO
@testable import NIOHTTP1
private extension ByteBuffer {
func assertContainsOnly(_ string: String) {
let innerData = self.getString(at: self.readerIndex, length: self.readableBytes)!
XCTAssertEqual(innerData, string)
}
}
class HTTPRequestEncoderTests: XCTestCase {
private func sendRequest(withMethod method: HTTPMethod, andHeaders headers: HTTPHeaders) throws -> ByteBuffer {
let channel = EmbeddedChannel()
defer {
XCTAssertEqual(true, try? channel.finish().isClean)
}
try channel.pipeline.addHandler(HTTPRequestEncoder()).wait()
var request = HTTPRequestHead(version: .http1_1, method: method, uri: "/uri")
request.headers = headers
try channel.writeOutbound(HTTPClientRequestPart.head(request))
if let buffer = try channel.readOutbound(as: ByteBuffer.self) {
return buffer
} else {
fatalError("Could not read ByteBuffer from channel")
}
}
func testNoAutoHeadersForHEAD() throws {
let writtenData = try sendRequest(withMethod: .HEAD, andHeaders: HTTPHeaders())
writtenData.assertContainsOnly("HEAD /uri HTTP/1.1\r\n\r\n")
}
func testNoAutoHeadersForGET() throws {
let writtenData = try sendRequest(withMethod: .GET, andHeaders: HTTPHeaders())
writtenData.assertContainsOnly("GET /uri HTTP/1.1\r\n\r\n")
}
func testGETContentHeadersLeftAlone() throws {
var headers = HTTPHeaders([("content-length", "17")])
var writtenData = try sendRequest(withMethod: .GET, andHeaders: headers)
writtenData.assertContainsOnly("GET /uri HTTP/1.1\r\ncontent-length: 17\r\n\r\n")
headers = HTTPHeaders([("transfer-encoding", "chunked")])
writtenData = try sendRequest(withMethod: .GET, andHeaders: headers)
writtenData.assertContainsOnly("GET /uri HTTP/1.1\r\ntransfer-encoding: chunked\r\n\r\n")
}
func testContentLengthHeadersForHEAD() throws {
let headers = HTTPHeaders([("content-length", "0")])
let writtenData = try sendRequest(withMethod: .HEAD, andHeaders: headers)
writtenData.assertContainsOnly("HEAD /uri HTTP/1.1\r\ncontent-length: 0\r\n\r\n")
}
func testTransferEncodingHeadersForHEAD() throws {
let headers = HTTPHeaders([("transfer-encoding", "chunked")])
let writtenData = try sendRequest(withMethod: .HEAD, andHeaders: headers)
writtenData.assertContainsOnly("HEAD /uri HTTP/1.1\r\ntransfer-encoding: chunked\r\n\r\n")
}
func testNoContentLengthHeadersForTRACE() throws {
let headers = HTTPHeaders([("content-length", "0")])
let writtenData = try sendRequest(withMethod: .TRACE, andHeaders: headers)
writtenData.assertContainsOnly("TRACE /uri HTTP/1.1\r\n\r\n")
}
func testNoTransferEncodingHeadersForTRACE() throws {
let headers = HTTPHeaders([("transfer-encoding", "chunked")])
let writtenData = try sendRequest(withMethod: .TRACE, andHeaders: headers)
writtenData.assertContainsOnly("TRACE /uri HTTP/1.1\r\n\r\n")
}
func testNoChunkedEncodingForHTTP10() throws {
let channel = EmbeddedChannel()
defer {
XCTAssertEqual(true, try? channel.finish().isClean)
}
XCTAssertNoThrow(try channel.pipeline.addHandler(HTTPRequestEncoder()).wait())
// This request contains neither Transfer-Encoding: chunked or Content-Length.
let request = HTTPRequestHead(version: .http1_0, method: .GET, uri: "/uri")
XCTAssertNoThrow(try channel.writeOutbound(HTTPClientRequestPart.head(request)))
let writtenData = try channel.readOutbound(as: ByteBuffer.self)!
let writtenResponse = writtenData.getString(at: writtenData.readerIndex, length: writtenData.readableBytes)!
XCTAssertEqual(writtenResponse, "GET /uri HTTP/1.0\r\n\r\n")
}
func testBody() throws {
let channel = EmbeddedChannel()
defer {
XCTAssertEqual(true, try? channel.finish().isClean)
}
try channel.pipeline.addHandler(HTTPRequestEncoder()).wait()
var request = HTTPRequestHead(version: .http1_1, method: .POST, uri: "/uri")
request.headers.add(name: "content-length", value: "4")
var buf = channel.allocator.buffer(capacity: 4)
buf.writeStaticString("test")
XCTAssertNoThrow(try channel.writeOutbound(HTTPClientRequestPart.head(request)))
XCTAssertNoThrow(try channel.writeOutbound(HTTPClientRequestPart.body(.byteBuffer(buf))))
XCTAssertNoThrow(try channel.writeOutbound(HTTPClientRequestPart.end(nil)))
assertOutboundContainsOnly(channel, "POST /uri HTTP/1.1\r\ncontent-length: 4\r\n\r\n")
assertOutboundContainsOnly(channel, "test")
assertOutboundContainsOnly(channel, "")
}
func testCONNECT() throws {
let channel = EmbeddedChannel()
defer {
XCTAssertEqual(true, try? channel.finish().isClean)
}
let uri = "server.example.com:80"
try channel.pipeline.addHandler(HTTPRequestEncoder()).wait()
var request = HTTPRequestHead(version: .http1_1, method: .CONNECT, uri: uri)
request.headers.add(name: "Host", value: uri)
XCTAssertNoThrow(try channel.writeOutbound(HTTPClientRequestPart.head(request)))
XCTAssertNoThrow(try channel.writeOutbound(HTTPClientRequestPart.end(nil)))
assertOutboundContainsOnly(channel, "CONNECT \(uri) HTTP/1.1\r\nHost: \(uri)\r\n\r\n")
assertOutboundContainsOnly(channel, "")
}
func testChunkedEncodingIsTheDefault() {
let channel = EmbeddedChannel(handler: HTTPRequestEncoder())
var buffer = channel.allocator.buffer(capacity: 16)
var expected = channel.allocator.buffer(capacity: 32)
XCTAssertNoThrow(try channel.writeOutbound(HTTPClientRequestPart.head(.init(version: .http1_1,
method: .POST,
uri: "/"))))
expected.writeString("POST / HTTP/1.1\r\ntransfer-encoding: chunked\r\n\r\n")
XCTAssertNoThrow(XCTAssertEqual(expected, try channel.readOutbound(as: ByteBuffer.self)))
buffer.writeString("foo")
XCTAssertNoThrow(try channel.writeOutbound(HTTPClientRequestPart.body(.byteBuffer(buffer))))
expected.clear()
expected.writeString("3\r\n")
XCTAssertNoThrow(XCTAssertEqual(expected, try channel.readOutbound(as: ByteBuffer.self)))
expected.clear()
expected.writeString("foo")
XCTAssertNoThrow(XCTAssertEqual(expected, try channel.readOutbound(as: ByteBuffer.self)))
expected.clear()
expected.writeString("\r\n")
XCTAssertNoThrow(XCTAssertEqual(expected, try channel.readOutbound(as: ByteBuffer.self)))
expected.clear()
expected.writeString("0\r\n\r\n")
XCTAssertNoThrow(try channel.writeOutbound(HTTPClientRequestPart.end(nil)))
XCTAssertNoThrow(XCTAssertEqual(expected, try channel.readOutbound(as: ByteBuffer.self)))
XCTAssertNoThrow(XCTAssertTrue(try channel.finish().isClean))
}
func testChunkedEncodingCanBetEnabled() {
let channel = EmbeddedChannel(handler: HTTPRequestEncoder())
var buffer = channel.allocator.buffer(capacity: 16)
var expected = channel.allocator.buffer(capacity: 32)
XCTAssertNoThrow(try channel.writeOutbound(HTTPClientRequestPart.head(.init(version: .http1_1,
method: .POST,
uri: "/",
headers: ["TrAnSfEr-encoding": "chuNKED"]))))
expected.writeString("POST / HTTP/1.1\r\ntransfer-encoding: chunked\r\n\r\n")
XCTAssertNoThrow(XCTAssertEqual(expected, try channel.readOutbound(as: ByteBuffer.self)))
buffer.writeString("foo")
XCTAssertNoThrow(try channel.writeOutbound(HTTPClientRequestPart.body(.byteBuffer(buffer))))
expected.clear()
expected.writeString("3\r\n")
XCTAssertNoThrow(XCTAssertEqual(expected, try channel.readOutbound(as: ByteBuffer.self)))
expected.clear()
expected.writeString("foo")
XCTAssertNoThrow(XCTAssertEqual(expected, try channel.readOutbound(as: ByteBuffer.self)))
expected.clear()
expected.writeString("\r\n")
XCTAssertNoThrow(XCTAssertEqual(expected, try channel.readOutbound(as: ByteBuffer.self)))
expected.clear()
expected.writeString("0\r\n\r\n")
XCTAssertNoThrow(try channel.writeOutbound(HTTPClientRequestPart.end(nil)))
XCTAssertNoThrow(XCTAssertEqual(expected, try channel.readOutbound(as: ByteBuffer.self)))
XCTAssertNoThrow(XCTAssertTrue(try channel.finish().isClean))
}
func testChunkedEncodingDealsWithZeroLengthChunks() {
let channel = EmbeddedChannel(handler: HTTPRequestEncoder())
var buffer = channel.allocator.buffer(capacity: 16)
var expected = channel.allocator.buffer(capacity: 32)
XCTAssertNoThrow(try channel.writeOutbound(HTTPClientRequestPart.head(.init(version: .http1_1,
method: .POST,
uri: "/"))))
expected.writeString("POST / HTTP/1.1\r\ntransfer-encoding: chunked\r\n\r\n")
XCTAssertNoThrow(XCTAssertEqual(expected, try channel.readOutbound(as: ByteBuffer.self)))
buffer.clear()
XCTAssertNoThrow(try channel.writeOutbound(HTTPClientRequestPart.body(.byteBuffer(buffer))))
XCTAssertNoThrow(XCTAssertEqual(0, try channel.readOutbound(as: ByteBuffer.self)?.readableBytes))
XCTAssertNoThrow(try channel.writeOutbound(HTTPClientRequestPart.end(["foo": "bar"])))
expected.clear()
expected.writeString("0\r\nfoo: bar\r\n\r\n")
XCTAssertNoThrow(XCTAssertEqual(expected, try channel.readOutbound(as: ByteBuffer.self)))
XCTAssertNoThrow(XCTAssertTrue(try channel.finish().isClean))
}
func testChunkedEncodingWorksIfNoPromisesAreAttachedToTheWrites() {
let channel = EmbeddedChannel(handler: HTTPRequestEncoder())
var buffer = channel.allocator.buffer(capacity: 16)
var expected = channel.allocator.buffer(capacity: 32)
channel.write(HTTPClientRequestPart.head(.init(version: .http1_1,
method: .POST,
uri: "/")), promise: nil)
channel.flush()
expected.writeString("POST / HTTP/1.1\r\ntransfer-encoding: chunked\r\n\r\n")
XCTAssertNoThrow(XCTAssertEqual(expected, try channel.readOutbound(as: ByteBuffer.self)))
buffer.writeString("foo")
channel.write(HTTPClientRequestPart.body(.byteBuffer(buffer)), promise: nil)
channel.flush()
expected.clear()
expected.writeString("3\r\n")
XCTAssertNoThrow(XCTAssertEqual(expected, try channel.readOutbound(as: ByteBuffer.self)))
expected.clear()
expected.writeString("foo")
XCTAssertNoThrow(XCTAssertEqual(expected, try channel.readOutbound(as: ByteBuffer.self)))
expected.clear()
expected.writeString("\r\n")
XCTAssertNoThrow(XCTAssertEqual(expected, try channel.readOutbound(as: ByteBuffer.self)))
expected.clear()
expected.writeString("0\r\n\r\n")
channel.write(HTTPClientRequestPart.end(nil), promise: nil)
channel.flush()
XCTAssertNoThrow(XCTAssertEqual(expected, try channel.readOutbound(as: ByteBuffer.self)))
XCTAssertNoThrow(XCTAssertTrue(try channel.finish().isClean))
}
private func assertOutboundContainsOnly(_ channel: EmbeddedChannel, _ expected: String) {
XCTAssertNoThrow(XCTAssertNotNil(try channel.readOutbound(as: ByteBuffer.self).map { buffer in
buffer.assertContainsOnly(expected)
}, "couldn't read ByteBuffer"))
}
}
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