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Unified Diff: tool/input_sdk/lib/io/http.dart

Issue 1976103003: Migrate dart2js stubs for dart:io (Closed) Base URL: https://github.com/dart-lang/dev_compiler.git@master
Patch Set: Created 4 years, 7 months ago
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Index: tool/input_sdk/lib/io/http.dart
diff --git a/tool/input_sdk/lib/io/http.dart b/tool/input_sdk/lib/io/http.dart
new file mode 100644
index 0000000000000000000000000000000000000000..07257eaf8b2710fbcbbebc623b5f15cf15077c90
--- /dev/null
+++ b/tool/input_sdk/lib/io/http.dart
@@ -0,0 +1,2033 @@
+// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+part of dart.io;
+
+/**
+ * HTTP status codes.
+ */
+abstract class HttpStatus {
+ static const int CONTINUE = 100;
+ static const int SWITCHING_PROTOCOLS = 101;
+ static const int OK = 200;
+ static const int CREATED = 201;
+ static const int ACCEPTED = 202;
+ static const int NON_AUTHORITATIVE_INFORMATION = 203;
+ static const int NO_CONTENT = 204;
+ static const int RESET_CONTENT = 205;
+ static const int PARTIAL_CONTENT = 206;
+ static const int MULTIPLE_CHOICES = 300;
+ static const int MOVED_PERMANENTLY = 301;
+ static const int FOUND = 302;
+ static const int MOVED_TEMPORARILY = 302; // Common alias for FOUND.
+ static const int SEE_OTHER = 303;
+ static const int NOT_MODIFIED = 304;
+ static const int USE_PROXY = 305;
+ static const int TEMPORARY_REDIRECT = 307;
+ static const int BAD_REQUEST = 400;
+ static const int UNAUTHORIZED = 401;
+ static const int PAYMENT_REQUIRED = 402;
+ static const int FORBIDDEN = 403;
+ static const int NOT_FOUND = 404;
+ static const int METHOD_NOT_ALLOWED = 405;
+ static const int NOT_ACCEPTABLE = 406;
+ static const int PROXY_AUTHENTICATION_REQUIRED = 407;
+ static const int REQUEST_TIMEOUT = 408;
+ static const int CONFLICT = 409;
+ static const int GONE = 410;
+ static const int LENGTH_REQUIRED = 411;
+ static const int PRECONDITION_FAILED = 412;
+ static const int REQUEST_ENTITY_TOO_LARGE = 413;
+ static const int REQUEST_URI_TOO_LONG = 414;
+ static const int UNSUPPORTED_MEDIA_TYPE = 415;
+ static const int REQUESTED_RANGE_NOT_SATISFIABLE = 416;
+ static const int EXPECTATION_FAILED = 417;
+ static const int INTERNAL_SERVER_ERROR = 500;
+ static const int NOT_IMPLEMENTED = 501;
+ static const int BAD_GATEWAY = 502;
+ static const int SERVICE_UNAVAILABLE = 503;
+ static const int GATEWAY_TIMEOUT = 504;
+ static const int HTTP_VERSION_NOT_SUPPORTED = 505;
+ // Client generated status code.
+ static const int NETWORK_CONNECT_TIMEOUT_ERROR = 599;
+}
+
+
+/**
+ * A server that delivers content, such as web pages, using the HTTP protocol.
+ *
+ * The HttpServer is a [Stream] that provides [HttpRequest] objects. Each
+ * HttpRequest has an associated [HttpResponse] object.
+ * The server responds to a request by writing to that HttpResponse object.
+ * The following example shows how to bind an HttpServer to an IPv6
+ * [InternetAddress] on port 80 (the standard port for HTTP servers)
+ * and how to listen for requests.
+ * Port 80 is the default HTTP port. However, on most systems accessing
+ * this requires super-user privileges. For local testing consider
+ * using a non-reserved port (1024 and above).
+ *
+ * import 'dart:io';
+ *
+ * main() {
+ * HttpServer
+ * .bind(InternetAddress.ANY_IP_V6, 80)
+ * .then((server) {
+ * server.listen((HttpRequest request) {
+ * request.response.write('Hello, world!');
+ * request.response.close();
+ * });
+ * });
+ * }
+ *
+ * Incomplete requests, in which all or part of the header is missing, are
+ * ignored, and no exceptions or HttpRequest objects are generated for them.
+ * Likewise, when writing to an HttpResponse, any [Socket] exceptions are
+ * ignored and any future writes are ignored.
+ *
+ * The HttpRequest exposes the request headers and provides the request body,
+ * if it exists, as a Stream of data. If the body is unread, it is drained
+ * when the server writes to the HttpResponse or closes it.
+ *
+ * ## Bind with a secure HTTPS connection
+ *
+ * Use [bindSecure] to create an HTTPS server.
+ *
+ * The server presents a certificate to the client. The certificate
+ * chain and the private key are set in the [SecurityContext]
+ * object that is passed to [bindSecure].
+ *
+ * import 'dart:io';
+ * import "dart:isolate";
+ *
+ * main() {
+ * SecurityContext context = new SecurityContext();
+ * var chain =
+ * Platform.script.resolve('certificates/server_chain.pem')
+ * .toFilePath();
+ * var key =
+ * Platform.script.resolve('certificates/server_key.pem')
+ * .toFilePath();
+ * context.useCertificateChain(chain);
+ * context.usePrivateKey(key, password: 'dartdart');
+ *
+ * HttpServer
+ * .bindSecure(InternetAddress.ANY_IP_V6,
+ * 443,
+ * context)
+ * .then((server) {
+ * server.listen((HttpRequest request) {
+ * request.response.write('Hello, world!');
+ * request.response.close();
+ * });
+ * });
+ * }
+ *
+ * The certificates and keys are PEM files, which can be created and
+ * managed with the tools in OpenSSL.
+ *
+ * ## Connect to a server socket
+ *
+ * You can use the [listenOn] constructor to attach an HTTP server to
+ * a [ServerSocket].
+ *
+ * import 'dart:io';
+ *
+ * main() {
+ * ServerSocket.bind(InternetAddress.ANY_IP_V6, 80)
+ * .then((serverSocket) {
+ * HttpServer httpserver = new HttpServer.listenOn(serverSocket);
+ * serverSocket.listen((Socket socket) {
+ * socket.write('Hello, client.');
+ * });
+ * });
+ * }
+ *
+ * ## Other resources
+ *
+ * * HttpServer is a Stream. Refer to the [Stream] class for information
+ * about the streaming qualities of an HttpServer.
+ * Pausing the subscription of the stream, pauses at the OS level.
+ *
+ * * The [http_server](https://pub.dartlang.org/packages/http_server)
+ * package on pub.dartlang.org contains a set of high-level classes that,
+ * together with this class, makes it easy to provide content through HTTP
+ * servers.
+ */
+abstract class HttpServer implements Stream<HttpRequest> {
+ /**
+ * Get and set the default value of the `Server` header for all responses
+ * generated by this [HttpServer].
+ *
+ * If [serverHeader] is `null`, no `Server` header will be added to each
+ * response.
+ *
+ * The default value is `null`.
+ */
+ String serverHeader;
+
+ /**
+ * Default set of headers added to all response objects.
+ *
+ * By default the following headers are in this set:
+ *
+ * Content-Type: text/plain; charset=utf-8
+ * X-Frame-Options: SAMEORIGIN
+ * X-Content-Type-Options: nosniff
+ * X-XSS-Protection: 1; mode=block
+ *
+ * If the `Server` header is added here and the `serverHeader` is set as
+ * well then the value of `serverHeader` takes precedence.
+ */
+ HttpHeaders get defaultResponseHeaders;
+
+ /**
+ * Whether the [HttpServer] should compress the content, if possible.
+ *
+ * The content can only be compressed when the response is using
+ * chunked Transfer-Encoding and the incoming request has `gzip`
+ * as an accepted encoding in the Accept-Encoding header.
+ *
+ * The default value is `false` (compression disabled).
+ * To enable, set `autoCompress` to `true`.
+ */
+ bool autoCompress;
+
+ /**
+ * Get or set the timeout used for idle keep-alive connections. If no further
+ * request is seen within [idleTimeout] after the previous request was
+ * completed, the connection is dropped.
+ *
+ * Default is 120 seconds.
+ *
+ * Note that it may take up to `2 * idleTimeout` before a idle connection is
+ * aborted.
+ *
+ * To disable, set [idleTimeout] to `null`.
+ */
+ Duration idleTimeout;
+
+
+ /**
+ * Starts listening for HTTP requests on the specified [address] and
+ * [port].
+ *
+ * The [address] can either be a [String] or an
+ * [InternetAddress]. If [address] is a [String], [bind] will
+ * perform a [InternetAddress.lookup] and use the first value in the
+ * list. To listen on the loopback adapter, which will allow only
+ * incoming connections from the local host, use the value
+ * [InternetAddress.LOOPBACK_IP_V4] or
+ * [InternetAddress.LOOPBACK_IP_V6]. To allow for incoming
+ * connection from the network use either one of the values
+ * [InternetAddress.ANY_IP_V4] or [InternetAddress.ANY_IP_V6] to
+ * bind to all interfaces or the IP address of a specific interface.
+ *
+ * If an IP version 6 (IPv6) address is used, both IP version 6
+ * (IPv6) and version 4 (IPv4) connections will be accepted. To
+ * restrict this to version 6 (IPv6) only, use [v6Only] to set
+ * version 6 only.
+ *
+ * If [port] has the value [:0:] an ephemeral port will be chosen by
+ * the system. The actual port used can be retrieved using the
+ * [port] getter.
+ *
+ * The optional argument [backlog] can be used to specify the listen
+ * backlog for the underlying OS listen setup. If [backlog] has the
+ * value of [:0:] (the default) a reasonable value will be chosen by
+ * the system.
+ *
+ * The optional argument [shared] specifies whether additional HttpServer
+ * objects can bind to the same combination of `address`, `port` and `v6Only`.
+ * If `shared` is `true` and more `HttpServer`s from this isolate or other
+ * isolates are bound to the port, then the incoming connections will be
+ * distributed among all the bound `HttpServer`s. Connections can be
+ * distributed over multiple isolates this way.
+ */
+ static Future<HttpServer> bind(address,
+ int port,
+ {int backlog: 0,
+ bool v6Only: false,
+ bool shared: false})
+ => _HttpServer.bind(address, port, backlog, v6Only, shared);
+
+ /**
+ * The [address] can either be a [String] or an
+ * [InternetAddress]. If [address] is a [String], [bind] will
+ * perform a [InternetAddress.lookup] and use the first value in the
+ * list. To listen on the loopback adapter, which will allow only
+ * incoming connections from the local host, use the value
+ * [InternetAddress.LOOPBACK_IP_V4] or
+ * [InternetAddress.LOOPBACK_IP_V6]. To allow for incoming
+ * connection from the network use either one of the values
+ * [InternetAddress.ANY_IP_V4] or [InternetAddress.ANY_IP_V6] to
+ * bind to all interfaces or the IP address of a specific interface.
+ *
+ * If an IP version 6 (IPv6) address is used, both IP version 6
+ * (IPv6) and version 4 (IPv4) connections will be accepted. To
+ * restrict this to version 6 (IPv6) only, use [v6Only] to set
+ * version 6 only.
+ *
+ * If [port] has the value [:0:] an ephemeral port will be chosen by
+ * the system. The actual port used can be retrieved using the
+ * [port] getter.
+ *
+ * The optional argument [backlog] can be used to specify the listen
+ * backlog for the underlying OS listen setup. If [backlog] has the
+ * value of [:0:] (the default) a reasonable value will be chosen by
+ * the system.
+ *
+ * If [requestClientCertificate] is true, the server will
+ * request clients to authenticate with a client certificate.
+ * The server will advertise the names of trusted issuers of client
+ * certificates, getting them from [context], where they have been
+ * set using [SecurityContext.setClientAuthorities].
+ *
+ * The optional argument [shared] specifies whether additional HttpServer
+ * objects can bind to the same combination of `address`, `port` and `v6Only`.
+ * If `shared` is `true` and more `HttpServer`s from this isolate or other
+ * isolates are bound to the port, then the incoming connections will be
+ * distributed among all the bound `HttpServer`s. Connections can be
+ * distributed over multiple isolates this way.
+ */
+
+ static Future<HttpServer> bindSecure(address,
+ int port,
+ SecurityContext context,
+ {int backlog: 0,
+ bool v6Only: false,
+ bool requestClientCertificate: false,
+ bool shared: false})
+ => _HttpServer.bindSecure(address,
+ port,
+ context,
+ backlog,
+ v6Only,
+ requestClientCertificate,
+ shared);
+
+ /**
+ * Attaches the HTTP server to an existing [ServerSocket]. When the
+ * [HttpServer] is closed, the [HttpServer] will just detach itself,
+ * closing current connections but not closing [serverSocket].
+ */
+ factory HttpServer.listenOn(ServerSocket serverSocket)
+ => new _HttpServer.listenOn(serverSocket);
+
+ /**
+ * Permanently stops this [HttpServer] from listening for new
+ * connections. This closes the [Stream] of [HttpRequest]s with a
+ * done event. The returned future completes when the server is
+ * stopped. For a server started using [bind] or [bindSecure] this
+ * means that the port listened on no longer in use.
+ *
+ * If [force] is `true`, active connections will be closed immediately.
+ */
+ Future close({bool force: false});
+
+ /**
+ * Returns the port that the server is listening on. This can be
+ * used to get the actual port used when a value of 0 for [:port:] is
+ * specified in the [bind] or [bindSecure] call.
+ */
+ int get port;
+
+ /**
+ * Returns the address that the server is listening on. This can be
+ * used to get the actual address used, when the address is fetched by
+ * a lookup from a hostname.
+ */
+ InternetAddress get address;
+
+ /**
+ * Sets the timeout, in seconds, for sessions of this [HttpServer].
+ * The default timeout is 20 minutes.
+ */
+ set sessionTimeout(int timeout);
+
+ /**
+ * Returns an [HttpConnectionsInfo] object summarizing the number of
+ * current connections handled by the server.
+ */
+ HttpConnectionsInfo connectionsInfo();
+}
+
+
+/**
+ * Summary statistics about an [HttpServer]s current socket connections.
+ */
+class HttpConnectionsInfo {
+ /**
+ * Total number of socket connections.
+ */
+ int total = 0;
+
+ /**
+ * Number of active connections where actual request/response
+ * processing is active.
+ */
+ int active = 0;
+
+ /**
+ * Number of idle connections held by clients as persistent connections.
+ */
+ int idle = 0;
+
+ /**
+ * Number of connections which are preparing to close. Note: These
+ * connections are also part of the [:active:] count as they might
+ * still be sending data to the client before finally closing.
+ */
+ int closing = 0;
+}
+
+
+/**
+ * Headers for HTTP requests and responses.
+ *
+ * In some situations, headers are immutable:
+ *
+ * * HttpRequest and HttpClientResponse always have immutable headers.
+ *
+ * * HttpResponse and HttpClientRequest have immutable headers
+ * from the moment the body is written to.
+ *
+ * In these situations, the mutating methods throw exceptions.
+ *
+ * For all operations on HTTP headers the header name is
+ * case-insensitive.
+ *
+ * To set the value of a header use the `set()` method:
+ *
+ * request.headers.set(HttpHeaders.CACHE_CONTROL,
+ 'max-age=3600, must-revalidate');
+ *
+ * To retrieve the value of a header use the `value()` method:
+ *
+ * print(request.headers.value(HttpHeaders.USER_AGENT));
+ *
+ * An HttpHeaders object holds a list of values for each name
+ * as the standard allows. In most cases a name holds only a single value,
+ * The most common mode of operation is to use `set()` for setting a value,
+ * and `value()` for retrieving a value.
+ */
+abstract class HttpHeaders {
+ static const ACCEPT = "accept";
+ static const ACCEPT_CHARSET = "accept-charset";
+ static const ACCEPT_ENCODING = "accept-encoding";
+ static const ACCEPT_LANGUAGE = "accept-language";
+ static const ACCEPT_RANGES = "accept-ranges";
+ static const AGE = "age";
+ static const ALLOW = "allow";
+ static const AUTHORIZATION = "authorization";
+ static const CACHE_CONTROL = "cache-control";
+ static const CONNECTION = "connection";
+ static const CONTENT_ENCODING = "content-encoding";
+ static const CONTENT_LANGUAGE = "content-language";
+ static const CONTENT_LENGTH = "content-length";
+ static const CONTENT_LOCATION = "content-location";
+ static const CONTENT_MD5 = "content-md5";
+ static const CONTENT_RANGE = "content-range";
+ static const CONTENT_TYPE = "content-type";
+ static const DATE = "date";
+ static const ETAG = "etag";
+ static const EXPECT = "expect";
+ static const EXPIRES = "expires";
+ static const FROM = "from";
+ static const HOST = "host";
+ static const IF_MATCH = "if-match";
+ static const IF_MODIFIED_SINCE = "if-modified-since";
+ static const IF_NONE_MATCH = "if-none-match";
+ static const IF_RANGE = "if-range";
+ static const IF_UNMODIFIED_SINCE = "if-unmodified-since";
+ static const LAST_MODIFIED = "last-modified";
+ static const LOCATION = "location";
+ static const MAX_FORWARDS = "max-forwards";
+ static const PRAGMA = "pragma";
+ static const PROXY_AUTHENTICATE = "proxy-authenticate";
+ static const PROXY_AUTHORIZATION = "proxy-authorization";
+ static const RANGE = "range";
+ static const REFERER = "referer";
+ static const RETRY_AFTER = "retry-after";
+ static const SERVER = "server";
+ static const TE = "te";
+ static const TRAILER = "trailer";
+ static const TRANSFER_ENCODING = "transfer-encoding";
+ static const UPGRADE = "upgrade";
+ static const USER_AGENT = "user-agent";
+ static const VARY = "vary";
+ static const VIA = "via";
+ static const WARNING = "warning";
+ static const WWW_AUTHENTICATE = "www-authenticate";
+
+ // Cookie headers from RFC 6265.
+ static const COOKIE = "cookie";
+ static const SET_COOKIE = "set-cookie";
+
+ static const GENERAL_HEADERS = const [CACHE_CONTROL,
+ CONNECTION,
+ DATE,
+ PRAGMA,
+ TRAILER,
+ TRANSFER_ENCODING,
+ UPGRADE,
+ VIA,
+ WARNING];
+
+ static const ENTITY_HEADERS = const [ALLOW,
+ CONTENT_ENCODING,
+ CONTENT_LANGUAGE,
+ CONTENT_LENGTH,
+ CONTENT_LOCATION,
+ CONTENT_MD5,
+ CONTENT_RANGE,
+ CONTENT_TYPE,
+ EXPIRES,
+ LAST_MODIFIED];
+
+
+ static const RESPONSE_HEADERS = const [ACCEPT_RANGES,
+ AGE,
+ ETAG,
+ LOCATION,
+ PROXY_AUTHENTICATE,
+ RETRY_AFTER,
+ SERVER,
+ VARY,
+ WWW_AUTHENTICATE];
+
+ static const REQUEST_HEADERS = const [ACCEPT,
+ ACCEPT_CHARSET,
+ ACCEPT_ENCODING,
+ ACCEPT_LANGUAGE,
+ AUTHORIZATION,
+ EXPECT,
+ FROM,
+ HOST,
+ IF_MATCH,
+ IF_MODIFIED_SINCE,
+ IF_NONE_MATCH,
+ IF_RANGE,
+ IF_UNMODIFIED_SINCE,
+ MAX_FORWARDS,
+ PROXY_AUTHORIZATION,
+ RANGE,
+ REFERER,
+ TE,
+ USER_AGENT];
+
+ /**
+ * Gets and sets the date. The value of this property will
+ * reflect the 'date' header.
+ */
+ DateTime date;
+
+ /**
+ * Gets and sets the expiry date. The value of this property will
+ * reflect the 'expires' header.
+ */
+ DateTime expires;
+
+ /**
+ * Gets and sets the "if-modified-since" date. The value of this property will
+ * reflect the "if-modified-since" header.
+ */
+ DateTime ifModifiedSince;
+
+ /**
+ * Gets and sets the host part of the 'host' header for the
+ * connection.
+ */
+ String host;
+
+ /**
+ * Gets and sets the port part of the 'host' header for the
+ * connection.
+ */
+ int port;
+
+ /**
+ * Gets and sets the content type. Note that the content type in the
+ * header will only be updated if this field is set
+ * directly. Mutating the returned current value will have no
+ * effect.
+ */
+ ContentType contentType;
+
+ /**
+ * Gets and sets the content length header value.
+ */
+ int contentLength;
+
+ /**
+ * Gets and sets the persistent connection header value.
+ */
+ bool persistentConnection;
+
+ /**
+ * Gets and sets the chunked transfer encoding header value.
+ */
+ bool chunkedTransferEncoding;
+
+ /**
+ * Returns the list of values for the header named [name]. If there
+ * is no header with the provided name, [:null:] will be returned.
+ */
+ List<String> operator[](String name);
+
+ /**
+ * Convenience method for the value for a single valued header. If
+ * there is no header with the provided name, [:null:] will be
+ * returned. If the header has more than one value an exception is
+ * thrown.
+ */
+ String value(String name);
+
+ /**
+ * Adds a header value. The header named [name] will have the value
+ * [value] added to its list of values. Some headers are single
+ * valued, and for these adding a value will replace the previous
+ * value. If the value is of type DateTime a HTTP date format will be
+ * applied. If the value is a [:List:] each element of the list will
+ * be added separately. For all other types the default [:toString:]
+ * method will be used.
+ */
+ void add(String name, Object value);
+
+ /**
+ * Sets a header. The header named [name] will have all its values
+ * cleared before the value [value] is added as its value.
+ */
+ void set(String name, Object value);
+
+ /**
+ * Removes a specific value for a header name. Some headers have
+ * system supplied values and for these the system supplied values
+ * will still be added to the collection of values for the header.
+ */
+ void remove(String name, Object value);
+
+ /**
+ * Removes all values for the specified header name. Some headers
+ * have system supplied values and for these the system supplied
+ * values will still be added to the collection of values for the
+ * header.
+ */
+ void removeAll(String name);
+
+ /**
+ * Enumerates the headers, applying the function [f] to each
+ * header. The header name passed in [:name:] will be all lower
+ * case.
+ */
+ void forEach(void f(String name, List<String> values));
+
+ /**
+ * Disables folding for the header named [name] when sending the HTTP
+ * header. By default, multiple header values are folded into a
+ * single header line by separating the values with commas. The
+ * 'set-cookie' header has folding disabled by default.
+ */
+ void noFolding(String name);
+
+ /**
+ * Remove all headers. Some headers have system supplied values and
+ * for these the system supplied values will still be added to the
+ * collection of values for the header.
+ */
+ void clear();
+}
+
+
+/**
+ * Representation of a header value in the form:
+ *
+ * [:value; parameter1=value1; parameter2=value2:]
+ *
+ * [HeaderValue] can be used to conveniently build and parse header
+ * values on this form.
+ *
+ * To build an [:accepts:] header with the value
+ *
+ * text/plain; q=0.3, text/html
+ *
+ * use code like this:
+ *
+ * HttpClientRequest request = ...;
+ * var v = new HeaderValue("text/plain", {"q": "0.3"});
+ * request.headers.add(HttpHeaders.ACCEPT, v);
+ * request.headers.add(HttpHeaders.ACCEPT, "text/html");
+ *
+ * To parse the header values use the [:parse:] static method.
+ *
+ * HttpRequest request = ...;
+ * List<String> values = request.headers[HttpHeaders.ACCEPT];
+ * values.forEach((value) {
+ * HeaderValue v = HeaderValue.parse(value);
+ * // Use v.value and v.parameters
+ * });
+ *
+ * An instance of [HeaderValue] is immutable.
+ */
+abstract class HeaderValue {
+ /**
+ * Creates a new header value object setting the value and parameters.
+ */
+ factory HeaderValue([String value = "", Map<String, String> parameters]) {
+ return new _HeaderValue(value, parameters);
+ }
+
+ /**
+ * Creates a new header value object from parsing a header value
+ * string with both value and optional parameters.
+ */
+ static HeaderValue parse(String value,
+ {String parameterSeparator: ";",
+ String valueSeparator: null,
+ bool preserveBackslash: false}) {
+ return _HeaderValue.parse(value,
+ parameterSeparator: parameterSeparator,
+ valueSeparator: valueSeparator,
+ preserveBackslash: preserveBackslash);
+ }
+
+ /**
+ * Gets the header value.
+ */
+ String get value;
+
+ /**
+ * Gets the map of parameters.
+ *
+ * This map cannot be modified. invoking any operation which would
+ * modify the map will throw [UnsupportedError].
+ */
+ Map<String, String> get parameters;
+
+ /**
+ * Returns the formatted string representation in the form:
+ *
+ * value; parameter1=value1; parameter2=value2
+ */
+ String toString();
+}
+
+abstract class HttpSession implements Map {
+ /**
+ * Gets the id for the current session.
+ */
+ String get id;
+
+ /**
+ * Destroys the session. This will terminate the session and any further
+ * connections with this id will be given a new id and session.
+ */
+ void destroy();
+
+ /**
+ * Sets a callback that will be called when the session is timed out.
+ */
+ void set onTimeout(void callback());
+
+ /**
+ * Is true if the session has not been sent to the client yet.
+ */
+ bool get isNew;
+}
+
+
+/**
+ * Representation of a content type. An instance of [ContentType] is
+ * immutable.
+ */
+abstract class ContentType implements HeaderValue {
+ /**
+ * Content type for plain text using UTF-8 encoding.
+ *
+ * text/plain; charset=utf-8
+ */
+ static final TEXT = new ContentType("text", "plain", charset: "utf-8");
+
+ /**
+ * Content type for HTML using UTF-8 encoding.
+ *
+ * text/html; charset=utf-8
+ */
+ static final HTML = new ContentType("text", "html", charset: "utf-8");
+
+ /**
+ * Content type for JSON using UTF-8 encoding.
+ *
+ * application/json; charset=utf-8
+ */
+ static final JSON = new ContentType("application", "json", charset: "utf-8");
+
+ /**
+ * Content type for binary data.
+ *
+ * application/octet-stream
+ */
+ static final BINARY = new ContentType("application", "octet-stream");
+
+ /**
+ * Creates a new content type object setting the primary type and
+ * sub type. The charset and additional parameters can also be set
+ * using [charset] and [parameters]. If charset is passed and
+ * [parameters] contains charset as well the passed [charset] will
+ * override the value in parameters. Keys passed in parameters will be
+ * converted to lower case. The `charset` entry, whether passed as `charset`
+ * or in `parameters`, will have its value converted to lower-case.
+ */
+ factory ContentType(String primaryType,
+ String subType,
+ {String charset, Map<String, String> parameters}) {
+ return new _ContentType(primaryType, subType, charset, parameters);
+ }
+
+ /**
+ * Creates a new content type object from parsing a Content-Type
+ * header value. As primary type, sub type and parameter names and
+ * values are not case sensitive all these values will be converted
+ * to lower case. Parsing this string
+ *
+ * text/html; charset=utf-8
+ *
+ * will create a content type object with primary type [:text:], sub
+ * type [:html:] and parameter [:charset:] with value [:utf-8:].
+ */
+ static ContentType parse(String value) {
+ return _ContentType.parse(value);
+ }
+
+ /**
+ * Gets the mime-type, without any parameters.
+ */
+ String get mimeType;
+
+ /**
+ * Gets the primary type.
+ */
+ String get primaryType;
+
+ /**
+ * Gets the sub type.
+ */
+ String get subType;
+
+ /**
+ * Gets the character set.
+ */
+ String get charset;
+}
+
+
+/**
+ * Representation of a cookie. For cookies received by the server as
+ * Cookie header values only [:name:] and [:value:] fields will be
+ * set. When building a cookie for the 'set-cookie' header in the server
+ * and when receiving cookies in the client as 'set-cookie' headers all
+ * fields can be used.
+ */
+abstract class Cookie {
+ /**
+ * Gets and sets the name.
+ */
+ String name;
+
+ /**
+ * Gets and sets the value.
+ */
+ String value;
+
+ /**
+ * Gets and sets the expiry date.
+ */
+ DateTime expires;
+
+ /**
+ * Gets and sets the max age. A value of [:0:] means delete cookie
+ * now.
+ */
+ int maxAge;
+
+ /**
+ * Gets and sets the domain.
+ */
+ String domain;
+
+ /**
+ * Gets and sets the path.
+ */
+ String path;
+
+ /**
+ * Gets and sets whether this cookie is secure.
+ */
+ bool secure;
+
+ /**
+ * Gets and sets whether this cookie is HTTP only.
+ */
+ bool httpOnly;
+
+ /**
+ * Creates a new cookie optionally setting the name and value.
+ *
+ * By default the value of `httpOnly` will be set to `true`.
+ */
+ factory Cookie([String name, String value]) => new _Cookie(name, value);
+
+ /**
+ * Creates a new cookie by parsing a header value from a 'set-cookie'
+ * header.
+ */
+ factory Cookie.fromSetCookieValue(String value) {
+ return new _Cookie.fromSetCookieValue(value);
+ }
+
+ /**
+ * Returns the formatted string representation of the cookie. The
+ * string representation can be used for for setting the Cookie or
+ * 'set-cookie' headers
+ */
+ String toString();
+}
+
+
+/**
+ * A server-side object
+ * that contains the content of and information about an HTTP request.
+ *
+ * __Note__: Check out the
+ * [http_server](http://pub.dartlang.org/packages/http_server)
+ * package, which makes working with the low-level
+ * dart:io HTTP server subsystem easier.
+ *
+ * `HttpRequest` objects are generated by an [HttpServer],
+ * which listens for HTTP requests on a specific host and port.
+ * For each request received, the HttpServer, which is a [Stream],
+ * generates an `HttpRequest` object and adds it to the stream.
+ *
+ * An `HttpRequest` object delivers the body content of the request
+ * as a stream of byte lists.
+ * The object also contains information about the request,
+ * such as the method, URI, and headers.
+ *
+ * In the following code, an HttpServer listens
+ * for HTTP requests. When the server receives a request,
+ * it uses the HttpRequest object's `method` property to dispatch requests.
+ *
+ * final HOST = InternetAddress.LOOPBACK_IP_V4;
+ * final PORT = 80;
+ *
+ * HttpServer.bind(HOST, PORT).then((_server) {
+ * _server.listen((HttpRequest request) {
+ * switch (request.method) {
+ * case 'GET':
+ * handleGetRequest(request);
+ * break;
+ * case 'POST':
+ * ...
+ * }
+ * },
+ * onError: handleError); // listen() failed.
+ * }).catchError(handleError);
+ *
+ * An HttpRequest object provides access to the associated [HttpResponse]
+ * object through the response property.
+ * The server writes its response to the body of the HttpResponse object.
+ * For example, here's a function that responds to a request:
+ *
+ * void handleGetRequest(HttpRequest req) {
+ * HttpResponse res = req.response;
+ * res.write('Received request ${req.method}: ${req.uri.path}');
+ * res.close();
+ * }
+ */
+abstract class HttpRequest implements Stream<List<int>> {
+ /**
+ * The content length of the request body.
+ *
+ * If the size of the request body is not known in advance,
+ * this value is -1.
+ */
+ int get contentLength;
+
+ /**
+ * The method, such as 'GET' or 'POST', for the request.
+ */
+ String get method;
+
+ /**
+ * The URI for the request.
+ *
+ * This provides access to the
+ * path and query string for the request.
+ */
+ Uri get uri;
+
+ /**
+ * The requested URI for the request.
+ *
+ * The returend URI is reconstructed by using http-header fields, to access
+ * otherwise lost information, e.g. host and scheme.
+ *
+ * To reconstruct the scheme, first 'X-Forwarded-Proto' is checked, and then
+ * falling back to server type.
+ *
+ * To reconstruct the host, fisrt 'X-Forwarded-Host' is checked, then 'Host'
+ * and finally calling back to server.
+ */
+ Uri get requestedUri;
+
+ /**
+ * The request headers.
+ *
+ * The returned [HttpHeaders] are immutable.
+ */
+ HttpHeaders get headers;
+
+ /**
+ * The cookies in the request, from the Cookie headers.
+ */
+ List<Cookie> get cookies;
+
+ /**
+ * The persistent connection state signaled by the client.
+ */
+ bool get persistentConnection;
+
+ /**
+ * The client certificate of the client making the request.
+ *
+ * This value is null if the connection is not a secure TLS or SSL connection,
+ * or if the server does not request a client certificate, or if the client
+ * does not provide one.
+ */
+ X509Certificate get certificate;
+
+ /**
+ * The session for the given request.
+ *
+ * If the session is
+ * being initialized by this call, [:isNew:] is true for the returned
+ * session.
+ * See [HttpServer.sessionTimeout] on how to change default timeout.
+ */
+ HttpSession get session;
+
+ /**
+ * The HTTP protocol version used in the request,
+ * either "1.0" or "1.1".
+ */
+ String get protocolVersion;
+
+ /**
+ * Information about the client connection.
+ *
+ * Returns [:null:] if the socket is not available.
+ */
+ HttpConnectionInfo get connectionInfo;
+
+ /**
+ * The [HttpResponse] object, used for sending back the response to the
+ * client.
+ *
+ * If the [contentLength] of the body isn't 0, and the body isn't being read,
+ * any write calls on the [HttpResponse] automatically drain the request
+ * body.
+ */
+ HttpResponse get response;
+}
+
+
+/**
+ * An HTTP response, which returns the headers and data
+ * from the server to the client in response to an HTTP request.
+ *
+ * Every HttpRequest object provides access to the associated [HttpResponse]
+ * object through the `response` property.
+ * The server sends its response to the client by writing to the
+ * HttpResponse object.
+ *
+ * ## Writing the response
+ *
+ * This class implements [IOSink].
+ * After the header has been set up, the methods
+ * from IOSink, such as `writeln()`, can be used to write
+ * the body of the HTTP response.
+ * Use the `close()` method to close the response and send it to the client.
+ *
+ * server.listen((HttpRequest request) {
+ * request.response.write('Hello, world!');
+ * request.response.close();
+ * });
+ *
+ * When one of the IOSink methods is used for the
+ * first time, the request header is sent. Calling any methods that
+ * change the header after it is sent throws an exception.
+ *
+ * ## Setting the headers
+ *
+ * The HttpResponse object has a number of properties for setting up
+ * the HTTP headers of the response.
+ * When writing string data through the IOSink, the encoding used
+ * is determined from the "charset" parameter of the
+ * "Content-Type" header.
+ *
+ * HttpResponse response = ...
+ * response.headers.contentType
+ * = new ContentType("application", "json", charset: "utf-8");
+ * response.write(...); // Strings written will be UTF-8 encoded.
+ *
+ * If no charset is provided the default of ISO-8859-1 (Latin 1) will
+ * be used.
+ *
+ * HttpResponse response = ...
+ * response.headers.add(HttpHeaders.CONTENT_TYPE, "text/plain");
+ * response.write(...); // Strings written will be ISO-8859-1 encoded.
+ *
+ * An exception is thrown if you use the `write()` method
+ * while an unsupported content-type is set.
+ */
+abstract class HttpResponse implements IOSink {
+ // TODO(ajohnsen): Add documentation of how to pipe a file to the response.
+ /**
+ * Gets and sets the content length of the response. If the size of
+ * the response is not known in advance set the content length to
+ * -1 - which is also the default if not set.
+ */
+ int contentLength;
+
+ /**
+ * Gets and sets the status code. Any integer value is accepted. For
+ * the official HTTP status codes use the fields from
+ * [HttpStatus]. If no status code is explicitly set the default
+ * value [HttpStatus.OK] is used.
+ *
+ * The status code must be set before the body is written
+ * to. Setting the status code after writing to the response body or
+ * closing the response will throw a `StateError`.
+ */
+ int statusCode;
+
+ /**
+ * Gets and sets the reason phrase. If no reason phrase is explicitly
+ * set a default reason phrase is provided.
+ *
+ * The reason phrase must be set before the body is written
+ * to. Setting the reason phrase after writing to the response body
+ * or closing the response will throw a `StateError`.
+ */
+ String reasonPhrase;
+
+ /**
+ * Gets and sets the persistent connection state. The initial value
+ * of this property is the persistent connection state from the
+ * request.
+ */
+ bool persistentConnection;
+
+ /**
+ * Set and get the [deadline] for the response. The deadline is timed from the
+ * time it's set. Setting a new deadline will override any previous deadline.
+ * When a deadline is exceeded, the response will be closed and any further
+ * data ignored.
+ *
+ * To disable a deadline, set the [deadline] to `null`.
+ *
+ * The [deadline] is `null` by default.
+ */
+ Duration deadline;
+
+ /**
+ * Get or set if the [HttpResponse] should buffer output.
+ *
+ * Default value is `true`.
+ *
+ * __Note__: Disabling buffering of the output can result in very poor
+ * performance, when writing many small chunks.
+ */
+ bool bufferOutput;
+
+ /**
+ * Returns the response headers.
+ *
+ * The response headers can be modified until the response body is
+ * written to or closed. After that they become immutable.
+ */
+ HttpHeaders get headers;
+
+ /**
+ * Cookies to set in the client (in the 'set-cookie' header).
+ */
+ List<Cookie> get cookies;
+
+ /**
+ * Respond with a redirect to [location].
+ *
+ * The URI in [location] should be absolute, but there are no checks
+ * to enforce that.
+ *
+ * By default the HTTP status code `HttpStatus.MOVED_TEMPORARILY`
+ * (`302`) is used for the redirect, but an alternative one can be
+ * specified using the [status] argument.
+ *
+ * This method will also call `close`, and the returned future is
+ * the furure returned by `close`.
+ */
+ Future redirect(Uri location, {int status: HttpStatus.MOVED_TEMPORARILY});
+
+ /**
+ * Detaches the underlying socket from the HTTP server. When the
+ * socket is detached the HTTP server will no longer perform any
+ * operations on it.
+ *
+ * This is normally used when a HTTP upgrade request is received
+ * and the communication should continue with a different protocol.
+ *
+ * If [writeHeaders] is `true`, the status line and [headers] will be written
+ * to the socket before it's detached. If `false`, the socket is detached
+ * immediately, without any data written to the socket. Default is `true`.
+ */
+ Future<Socket> detachSocket({bool writeHeaders: true});
+
+ /**
+ * Gets information about the client connection. Returns [:null:] if the
+ * socket is not available.
+ */
+ HttpConnectionInfo get connectionInfo;
+}
+
+
+/**
+ * A client that receives content, such as web pages, from
+ * a server using the HTTP protocol.
+ *
+ * HttpClient contains a number of methods to send an [HttpClientRequest]
+ * to an Http server and receive an [HttpClientResponse] back.
+ * For example, you can use the [get], [getUrl], [post], and [postUrl] methods
+ * for GET and POST requests, respectively.
+ *
+ * ## Making a simple GET request: an example
+ *
+ * A `getUrl` request is a two-step process, triggered by two [Future]s.
+ * When the first future completes with a [HttpClientRequest], the underlying
+ * network connection has been established, but no data has been sent.
+ * In the callback function for the first future, the HTTP headers and body
+ * can be set on the request. Either the first write to the request object
+ * or a call to [close] sends the request to the server.
+ *
+ * When the HTTP response is received from the server,
+ * the second future, which is returned by close,
+ * completes with an [HttpClientResponse] object.
+ * This object provides access to the headers and body of the response.
+ * The body is available as a stream implemented by HttpClientResponse.
+ * If a body is present, it must be read. Otherwise, it leads to resource
+ * leaks. Consider using [HttpClientResponse.drain] if the body is unused.
+ *
+ * HttpClient client = new HttpClient();
+ * client.getUrl(Uri.parse("http://www.example.com/"))
+ * .then((HttpClientRequest request) {
+ * // Optionally set up headers...
+ * // Optionally write to the request object...
+ * // Then call close.
+ * ...
+ * return request.close();
+ * })
+ * .then((HttpClientResponse response) {
+ * // Process the response.
+ * ...
+ * });
+ *
+ * The future for [HttpClientRequest] is created by methods such as
+ * [getUrl] and [open].
+ *
+ * ## HTTPS connections
+ *
+ * An HttpClient can make HTTPS requests, connecting to a server using
+ * the TLS (SSL) secure networking protocol. Calling [getUrl] with an
+ * https: scheme will work automatically, if the server's certificate is
+ * signed by a root CA (certificate authority) on the default list of
+ * well-known trusted CAs, compiled by Mozilla.
+ *
+ * To add a custom trusted certificate authority, or to send a client
+ * certificate to servers that request one, pass a [SecurityContext] object
+ * as the optional [context] argument to the `HttpClient` constructor.
+ * The desired security options can be set on the [SecurityContext] object.
+ *
+ * ## Headers
+ *
+ * All HttpClient requests set the following header by default:
+ *
+ * Accept-Encoding: gzip
+ *
+ * This allows the HTTP server to use gzip compression for the body if
+ * possible. If this behavior is not desired set the
+ * `Accept-Encoding` header to something else.
+ * To turn off gzip compression of the response, clear this header:
+ *
+ * request.headers.removeAll(HttpHeaders.ACCEPT_ENCODING)
+ *
+ * ## Closing the HttpClient
+ *
+ * The HttpClient supports persistent connections and caches network
+ * connections to reuse them for multiple requests whenever
+ * possible. This means that network connections can be kept open for
+ * some time after a request has completed. Use HttpClient.close
+ * to force the HttpClient object to shut down and to close the idle
+ * network connections.
+ *
+ * ## Turning proxies on and off
+ *
+ * By default the HttpClient uses the proxy configuration available
+ * from the environment, see [findProxyFromEnvironment]. To turn off
+ * the use of proxies set the [findProxy] property to
+ * [:null:].
+ *
+ * HttpClient client = new HttpClient();
+ * client.findProxy = null;
+ */
+abstract class HttpClient {
+ static const int DEFAULT_HTTP_PORT = 80;
+ static const int DEFAULT_HTTPS_PORT = 443;
+
+ /**
+ * Get and set the idle timeout of non-active persistent (keep-alive)
+ * connections. The default value is 15 seconds.
+ */
+ Duration idleTimeout;
+
+ /**
+ * Get and set the maximum number of live connections, to a single host.
+ *
+ * Increasing this number may lower performance and take up unwanted
+ * system resources.
+ *
+ * To disable, set to `null`.
+ *
+ * Default is `null`.
+ */
+ int maxConnectionsPerHost;
+
+ /**
+ * Get and set whether the body of a response will be automatically
+ * uncompressed.
+ *
+ * The body of an HTTP response can be compressed. In most
+ * situations providing the un-compressed body is most
+ * convenient. Therefore the default behavior is to un-compress the
+ * body. However in some situations (e.g. implementing a transparent
+ * proxy) keeping the uncompressed stream is required.
+ *
+ * NOTE: Headers in from the response is never modified. This means
+ * that when automatic un-compression is turned on the value of the
+ * header `Content-Length` will reflect the length of the original
+ * compressed body. Likewise the header `Content-Encoding` will also
+ * have the original value indicating compression.
+ *
+ * NOTE: Automatic un-compression is only performed if the
+ * `Content-Encoding` header value is `gzip`.
+ *
+ * This value affects all responses produced by this client after the
+ * value is changed.
+ *
+ * To disable, set to `false`.
+ *
+ * Default is `true`.
+ */
+ bool autoUncompress;
+
+ /**
+ * Set and get the default value of the `User-Agent` header for all requests
+ * generated by this [HttpClient]. The default value is
+ * `Dart/<version> (dart:io)`.
+ *
+ * If the userAgent is set to `null`, no default `User-Agent` header will be
+ * added to each request.
+ */
+ String userAgent;
+
+ factory HttpClient({SecurityContext context}) => new _HttpClient(context);
+
+ /**
+ * Opens a HTTP connection.
+ *
+ * The HTTP method to use is specified in [method], the server is
+ * specified using [host] and [port], and the path (including
+ * a possible query) is specified using [path].
+ * The path may also contain a URI fragment, which will be ignored.
+ *
+ * The `Host` header for the request will be set to the value
+ * [host]:[port]. This can be overridden through the
+ * [HttpClientRequest] interface before the request is sent. NOTE
+ * if [host] is an IP address this will still be set in the `Host`
+ * header.
+ *
+ * For additional information on the sequence of events during an
+ * HTTP transaction, and the objects returned by the futures, see
+ * the overall documentation for the class [HttpClient].
+ */
+ Future<HttpClientRequest> open(String method,
+ String host,
+ int port,
+ String path);
+
+ /**
+ * Opens a HTTP connection.
+ *
+ * The HTTP method is specified in [method] and the URL to use in
+ * [url].
+ *
+ * The `Host` header for the request will be set to the value
+ * [host]:[port]. This can be overridden through the
+ * [HttpClientRequest] interface before the request is sent. NOTE
+ * if [host] is an IP address this will still be set in the `Host`
+ * header.
+ *
+ * For additional information on the sequence of events during an
+ * HTTP transaction, and the objects returned by the futures, see
+ * the overall documentation for the class [HttpClient].
+ */
+ Future<HttpClientRequest> openUrl(String method, Uri url);
+
+ /**
+ * Opens a HTTP connection using the GET method.
+ *
+ * The server is specified using [host] and [port], and the path
+ * (including a possible query) is specified using
+ * [path].
+ *
+ * See [open] for details.
+ */
+ Future<HttpClientRequest> get(String host, int port, String path);
+
+ /**
+ * Opens a HTTP connection using the GET method.
+ *
+ * The URL to use is specified in [url].
+ *
+ * See [openUrl] for details.
+ */
+ Future<HttpClientRequest> getUrl(Uri url);
+
+ /**
+ * Opens a HTTP connection using the POST method.
+ *
+ * The server is specified using [host] and [port], and the path
+ * (including a possible query) is specified using
+ * [path].
+ *
+ * See [open] for details.
+ */
+ Future<HttpClientRequest> post(String host, int port, String path);
+
+ /**
+ * Opens a HTTP connection using the POST method.
+ *
+ * The URL to use is specified in [url].
+ *
+ * See [openUrl] for details.
+ */
+ Future<HttpClientRequest> postUrl(Uri url);
+
+ /**
+ * Opens a HTTP connection using the PUT method.
+ *
+ * The server is specified using [host] and [port], and the path
+ * (including a possible query) is specified using [path].
+ *
+ * See [open] for details.
+ */
+ Future<HttpClientRequest> put(String host, int port, String path);
+
+ /**
+ * Opens a HTTP connection using the PUT method.
+ *
+ * The URL to use is specified in [url].
+ *
+ * See [openUrl] for details.
+ */
+ Future<HttpClientRequest> putUrl(Uri url);
+
+ /**
+ * Opens a HTTP connection using the DELETE method.
+ *
+ * The server is specified using [host] and [port], and the path
+ * (including s possible query) is specified using [path].
+ *
+ * See [open] for details.
+ */
+ Future<HttpClientRequest> delete(String host, int port, String path);
+
+ /**
+ * Opens a HTTP connection using the DELETE method.
+ *
+ * The URL to use is specified in [url].
+ *
+ * See [openUrl] for details.
+ */
+ Future<HttpClientRequest> deleteUrl(Uri url);
+
+ /**
+ * Opens a HTTP connection using the PATCH method.
+ *
+ * The server is specified using [host] and [port], and the path
+ * (including a possible query) is specified using [path].
+ *
+ * See [open] for details.
+ */
+ Future<HttpClientRequest> patch(String host, int port, String path);
+
+ /**
+ * Opens a HTTP connection using the PATCH method.
+ *
+ * The URL to use is specified in [url].
+ *
+ * See [openUrl] for details.
+ */
+ Future<HttpClientRequest> patchUrl(Uri url);
+
+ /**
+ * Opens a HTTP connection using the HEAD method.
+ *
+ * The server is specified using [host] and [port], and the path
+ * (including a possible query) is specified using [path].
+ *
+ * See [open] for details.
+ */
+ Future<HttpClientRequest> head(String host, int port, String path);
+
+ /**
+ * Opens a HTTP connection using the HEAD method.
+ *
+ * The URL to use is specified in [url].
+ *
+ * See [openUrl] for details.
+ */
+ Future<HttpClientRequest> headUrl(Uri url);
+
+ /**
+ * Sets the function to be called when a site is requesting
+ * authentication. The URL requested and the security realm from the
+ * server are passed in the arguments [url] and [realm].
+ *
+ * The function returns a [Future] which should complete when the
+ * authentication has been resolved. If credentials cannot be
+ * provided the [Future] should complete with [:false:]. If
+ * credentials are available the function should add these using
+ * [addCredentials] before completing the [Future] with the value
+ * [:true:].
+ *
+ * If the [Future] completes with true the request will be retried
+ * using the updated credentials. Otherwise response processing will
+ * continue normally.
+ */
+ set authenticate(Future<bool> f(Uri url, String scheme, String realm));
+
+ /**
+ * Add credentials to be used for authorizing HTTP requests.
+ */
+ void addCredentials(Uri url, String realm, HttpClientCredentials credentials);
+
+ /**
+ * Sets the function used to resolve the proxy server to be used for
+ * opening a HTTP connection to the specified [url]. If this
+ * function is not set, direct connections will always be used.
+ *
+ * The string returned by [f] must be in the format used by browser
+ * PAC (proxy auto-config) scripts. That is either
+ *
+ * "DIRECT"
+ *
+ * for using a direct connection or
+ *
+ * "PROXY host:port"
+ *
+ * for using the proxy server [:host:] on port [:port:].
+ *
+ * A configuration can contain several configuration elements
+ * separated by semicolons, e.g.
+ *
+ * "PROXY host:port; PROXY host2:port2; DIRECT"
+ *
+ * The static function [findProxyFromEnvironment] on this class can
+ * be used to implement proxy server resolving based on environment
+ * variables.
+ */
+ set findProxy(String f(Uri url));
+
+ /**
+ * Function for resolving the proxy server to be used for a HTTP
+ * connection from the proxy configuration specified through
+ * environment variables.
+ *
+ * The following environment variables are taken into account:
+ *
+ * http_proxy
+ * https_proxy
+ * no_proxy
+ * HTTP_PROXY
+ * HTTPS_PROXY
+ * NO_PROXY
+ *
+ * [:http_proxy:] and [:HTTP_PROXY:] specify the proxy server to use for
+ * http:// urls. Use the format [:hostname:port:]. If no port is used a
+ * default of 1080 will be used. If both are set the lower case one takes
+ * precedence.
+ *
+ * [:https_proxy:] and [:HTTPS_PROXY:] specify the proxy server to use for
+ * https:// urls. Use the format [:hostname:port:]. If no port is used a
+ * default of 1080 will be used. If both are set the lower case one takes
+ * precedence.
+ *
+ * [:no_proxy:] and [:NO_PROXY:] specify a comma separated list of
+ * postfixes of hostnames for which not to use the proxy
+ * server. E.g. the value "localhost,127.0.0.1" will make requests
+ * to both "localhost" and "127.0.0.1" not use a proxy. If both are set
+ * the lower case one takes precedence.
+ *
+ * To activate this way of resolving proxies assign this function to
+ * the [findProxy] property on the [HttpClient].
+ *
+ * HttpClient client = new HttpClient();
+ * client.findProxy = HttpClient.findProxyFromEnvironment;
+ *
+ * If you don't want to use the system environment you can use a
+ * different one by wrapping the function.
+ *
+ * HttpClient client = new HttpClient();
+ * client.findProxy = (url) {
+ * return HttpClient.findProxyFromEnvironment(
+ * url, {"http_proxy": ..., "no_proxy": ...});
+ * }
+ *
+ * If a proxy requires authentication it is possible to configure
+ * the username and password as well. Use the format
+ * [:username:password@hostname:port:] to include the username and
+ * password. Alternatively the API [addProxyCredentials] can be used
+ * to set credentials for proxies which require authentication.
+ */
+ static String findProxyFromEnvironment(Uri url,
+ {Map<String, String> environment}) {
+ return _HttpClient._findProxyFromEnvironment(url, environment);
+ }
+
+ /**
+ * Sets the function to be called when a proxy is requesting
+ * authentication. Information on the proxy in use and the security
+ * realm for the authentication are passed in the arguments [host],
+ * [port] and [realm].
+ *
+ * The function returns a [Future] which should complete when the
+ * authentication has been resolved. If credentials cannot be
+ * provided the [Future] should complete with [:false:]. If
+ * credentials are available the function should add these using
+ * [addProxyCredentials] before completing the [Future] with the value
+ * [:true:].
+ *
+ * If the [Future] completes with [:true:] the request will be retried
+ * using the updated credentials. Otherwise response processing will
+ * continue normally.
+ */
+ set authenticateProxy(
+ Future<bool> f(String host, int port, String scheme, String realm));
+
+ /**
+ * Add credentials to be used for authorizing HTTP proxies.
+ */
+ void addProxyCredentials(String host,
+ int port,
+ String realm,
+ HttpClientCredentials credentials);
+
+ /**
+ * Sets a callback that will decide whether to accept a secure connection
+ * with a server certificate that cannot be authenticated by any of our
+ * trusted root certificates.
+ *
+ * When an secure HTTP request if made, using this HttpClient, and the
+ * server returns a server certificate that cannot be authenticated, the
+ * callback is called asynchronously with the [X509Certificate] object and
+ * the server's hostname and port. If the value of [badCertificateCallback]
+ * is [:null:], the bad certificate is rejected, as if the callback
+ * returned [:false:]
+ *
+ * If the callback returns true, the secure connection is accepted and the
+ * [:Future<HttpClientRequest>:] that was returned from the call making the
+ * request completes with a valid HttpRequest object. If the callback returns
+ * false, the [:Future<HttpClientRequest>:] completes with an exception.
+ *
+ * If a bad certificate is received on a connection attempt, the library calls
+ * the function that was the value of badCertificateCallback at the time
+ * the request is made, even if the value of badCertificateCallback
+ * has changed since then.
+ */
+ set badCertificateCallback(bool callback(X509Certificate cert,
+ String host,
+ int port));
+
+ /**
+ * Shutdown the HTTP client. If [force] is [:false:] (the default)
+ * the [:HttpClient:] will be kept alive until all active
+ * connections are done. If [force] is [:true:] any active
+ * connections will be closed to immediately release all
+ * resources. These closed connections will receive an [:onError:]
+ * callback to indicate that the client was shutdown. In both cases
+ * trying to establish a new connection after calling [shutdown]
+ * will throw an exception.
+ */
+ void close({bool force: false});
+}
+
+
+/**
+ * HTTP request for a client connection.
+ *
+ * To set up a request, set the headers using the headers property
+ * provided in this class and write the data to the body of the request.
+ * HttpClientRequest is an [IOSink]. Use the methods from IOSink,
+ * such as writeCharCode(), to write the body of the HTTP
+ * request. When one of the IOSink methods is used for the first
+ * time, the request header is sent. Calling any methods that
+ * change the header after it is sent throws an exception.
+ *
+ * When writing string data through the [IOSink] the
+ * encoding used is determined from the "charset" parameter of
+ * the "Content-Type" header.
+ *
+ * HttpClientRequest request = ...
+ * request.headers.contentType
+ * = new ContentType("application", "json", charset: "utf-8");
+ * request.write(...); // Strings written will be UTF-8 encoded.
+ *
+ * If no charset is provided the default of ISO-8859-1 (Latin 1) is
+ * be used.
+ *
+ * HttpClientRequest request = ...
+ * request.headers.add(HttpHeaders.CONTENT_TYPE, "text/plain");
+ * request.write(...); // Strings written will be ISO-8859-1 encoded.
+ *
+ * An exception is thrown if you use an unsupported encoding and the
+ * `write()` method being used takes a string parameter.
+ */
+abstract class HttpClientRequest implements IOSink {
+ /**
+ * Gets and sets the requested persistent connection state.
+ *
+ * The default value is [:true:].
+ */
+ bool persistentConnection;
+
+ /**
+ * Set this property to [:true:] if this request should
+ * automatically follow redirects. The default is [:true:].
+ *
+ * Automatic redirect will only happen for "GET" and "HEAD" requests
+ * and only for the status codes [:HttpHeaders.MOVED_PERMANENTLY:]
+ * (301), [:HttpStatus.FOUND:] (302),
+ * [:HttpStatus.MOVED_TEMPORARILY:] (302, alias for
+ * [:HttpStatus.FOUND:]), [:HttpStatus.SEE_OTHER:] (303) and
+ * [:HttpStatus.TEMPORARY_REDIRECT:] (307). For
+ * [:HttpStatus.SEE_OTHER:] (303) autmatic redirect will also happen
+ * for "POST" requests with the method changed to "GET" when
+ * following the redirect.
+ *
+ * All headers added to the request will be added to the redirection
+ * request(s). However, any body send with the request will not be
+ * part of the redirection request(s).
+ */
+ bool followRedirects;
+
+ /**
+ * Set this property to the maximum number of redirects to follow
+ * when [followRedirects] is [:true:]. If this number is exceeded the
+ * [onError] callback will be called with a [RedirectException].
+ *
+ * The default value is 5.
+ */
+ int maxRedirects;
+
+ /**
+ * The method of the request.
+ */
+ String get method;
+
+ /**
+ * The uri of the request.
+ */
+ Uri get uri;
+
+ /**
+ * Gets and sets the content length of the request. If the size of
+ * the request is not known in advance set content length to -1,
+ * which is also the default.
+ */
+ int contentLength;
+
+ /**
+ * Get or set if the [HttpClientRequest] should buffer output.
+ *
+ * Default value is `true`.
+ *
+ * __Note__: Disabling buffering of the output can result in very poor
+ * performance, when writing many small chunks.
+ */
+ bool bufferOutput;
+
+ /**
+ * Returns the client request headers.
+ *
+ * The client request headers can be modified until the client
+ * request body is written to or closed. After that they become
+ * immutable.
+ */
+ HttpHeaders get headers;
+
+ /**
+ * Cookies to present to the server (in the 'cookie' header).
+ */
+ List<Cookie> get cookies;
+
+ /**
+ * A [HttpClientResponse] future that will complete once the response is
+ * available. If an error occurs before the response is available, this
+ * future will complete with an error.
+ */
+ Future<HttpClientResponse> get done;
+
+ /**
+ * Close the request for input. Returns the value of [done].
+ */
+ Future<HttpClientResponse> close();
+
+ /**
+ * Get information about the client connection. Returns [:null:] if the socket
+ * is not available.
+ */
+ HttpConnectionInfo get connectionInfo;
+}
+
+
+/**
+ * HTTP response for a client connection.
+ *
+ * The body of a [HttpClientResponse] object is a
+ * [Stream] of data from the server. Listen to the body to handle
+ * the data and be notified when the entire body is received.
+ *
+ * new HttpClient().get('localhost', 80, '/file.txt')
+ * .then((HttpClientRequest request) => request.close())
+ * .then((HttpClientResponse response) {
+ * response.transform(UTF8.decoder).listen((contents) {
+ * // handle data
+ * });
+ * });
+ */
+abstract class HttpClientResponse implements Stream<List<int>> {
+ /**
+ * Returns the status code.
+ *
+ * The status code must be set before the body is written
+ * to. Setting the status code after writing to the body will throw
+ * a `StateError`.
+ */
+ int get statusCode;
+
+ /**
+ * Returns the reason phrase associated with the status code.
+ *
+ * The reason phrase must be set before the body is written
+ * to. Setting the reason phrase after writing to the body will throw
+ * a `StateError`.
+ */
+ String get reasonPhrase;
+
+ /**
+ * Returns the content length of the response body. Returns -1 if the size of
+ * the response body is not known in advance.
+ *
+ * If the content length needs to be set, it must be set before the
+ * body is written to. Setting the reason phrase after writing to
+ * the body will throw a `StateError`.
+ */
+ int get contentLength;
+
+ /**
+ * Gets the persistent connection state returned by the server.
+ *
+ * if the persistent connection state needs to be set, it must be
+ * set before the body is written to. Setting the reason phrase
+ * after writing to the body will throw a `StateError`.
+ */
+ bool get persistentConnection;
+
+ /**
+ * Returns whether the status code is one of the normal redirect
+ * codes [HttpStatus.MOVED_PERMANENTLY], [HttpStatus.FOUND],
+ * [HttpStatus.MOVED_TEMPORARILY], [HttpStatus.SEE_OTHER] and
+ * [HttpStatus.TEMPORARY_REDIRECT].
+ */
+ bool get isRedirect;
+
+ /**
+ * Returns the series of redirects this connection has been through. The
+ * list will be empty if no redirects were followed. [redirects] will be
+ * updated both in the case of an automatic and a manual redirect.
+ */
+ List<RedirectInfo> get redirects;
+
+ /**
+ * Redirects this connection to a new URL. The default value for
+ * [method] is the method for the current request. The default value
+ * for [url] is the value of the [HttpHeaders.LOCATION] header of
+ * the current response. All body data must have been read from the
+ * current response before calling [redirect].
+ *
+ * All headers added to the request will be added to the redirection
+ * request. However, any body sent with the request will not be
+ * part of the redirection request.
+ *
+ * If [followLoops] is set to [:true:], redirect will follow the redirect,
+ * even if the URL was already visited. The default value is [:false:].
+ *
+ * [redirect] will ignore [maxRedirects] and will always perform the redirect.
+ */
+ Future<HttpClientResponse> redirect([String method,
+ Uri url,
+ bool followLoops]);
+
+
+ /**
+ * Returns the client response headers.
+ *
+ * The client response headers are immutable.
+ */
+ HttpHeaders get headers;
+
+ /**
+ * Detach the underlying socket from the HTTP client. When the
+ * socket is detached the HTTP client will no longer perform any
+ * operations on it.
+ *
+ * This is normally used when a HTTP upgrade is negotiated and the
+ * communication should continue with a different protocol.
+ */
+ Future<Socket> detachSocket();
+
+ /**
+ * Cookies set by the server (from the 'set-cookie' header).
+ */
+ List<Cookie> get cookies;
+
+ /**
+ * Returns the certificate of the HTTPS server providing the response.
+ * Returns null if the connection is not a secure TLS or SSL connection.
+ */
+ X509Certificate get certificate;
+
+ /**
+ * Gets information about the client connection. Returns [:null:] if the socket
+ * is not available.
+ */
+ HttpConnectionInfo get connectionInfo;
+}
+
+
+abstract class HttpClientCredentials { }
+
+
+/**
+ * Represents credentials for basic authentication.
+ */
+abstract class HttpClientBasicCredentials extends HttpClientCredentials {
+ factory HttpClientBasicCredentials(String username, String password) =>
+ new _HttpClientBasicCredentials(username, password);
+}
+
+
+/**
+ * Represents credentials for digest authentication. Digest
+ * authentication is only supported for servers using the MD5
+ * algorithm and quality of protection (qop) of either "none" or
+ * "auth".
+ */
+abstract class HttpClientDigestCredentials extends HttpClientCredentials {
+ factory HttpClientDigestCredentials(String username, String password) =>
+ new _HttpClientDigestCredentials(username, password);
+}
+
+
+/**
+ * Information about an [HttpRequest], [HttpResponse], [HttpClientRequest], or
+ * [HttpClientResponse] connection.
+ */
+abstract class HttpConnectionInfo {
+ InternetAddress get remoteAddress;
+ int get remotePort;
+ int get localPort;
+}
+
+
+/**
+ * Redirect information.
+ */
+abstract class RedirectInfo {
+ /**
+ * Returns the status code used for the redirect.
+ */
+ int get statusCode;
+
+ /**
+ * Returns the method used for the redirect.
+ */
+ String get method;
+
+ /**
+ * Returns the location for the redirect.
+ */
+ Uri get location;
+}
+
+
+/**
+ * When detaching a socket from either the [:HttpServer:] or the
+ * [:HttpClient:] due to a HTTP connection upgrade there might be
+ * unparsed data already read from the socket. This unparsed data
+ * together with the detached socket is returned in an instance of
+ * this class.
+ */
+abstract class DetachedSocket {
+ Socket get socket;
+ List<int> get unparsedData;
+}
+
+
+class HttpException implements IOException {
+ final String message;
+ final Uri uri;
+
+ const HttpException(String this.message, {Uri this.uri});
+
+ String toString() {
+ var b = new StringBuffer()
+ ..write('HttpException: ')
+ ..write(message);
+ if (uri != null) {
+ b.write(', uri = $uri');
+ }
+ return b.toString();
+ }
+}
+
+
+class RedirectException implements HttpException {
+ final String message;
+ final List<RedirectInfo> redirects;
+
+ const RedirectException(this.message, this.redirects);
+
+ String toString() => "RedirectException: $message";
+
+ Uri get uri => redirects.last.location;
+}
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