RestFuse的研究(五) Http请求的封装

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           在RestFuse中封装了Http请求,没有采用任何开源组建简单方便.具体看代码:

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.Closeable;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.Flushable;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintStream;
import java.io.Reader;
import java.io.UnsupportedEncodingException;
import java.io.Writer;
import java.net.HttpURLConnection;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLEncoder;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.Charset;
import java.nio.charset.CharsetEncoder;
import java.security.AccessController;
import java.security.GeneralSecurityException;
import java.security.PrivilegedAction;
import java.security.SecureRandom;
import java.security.cert.X509Certificate;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.concurrent.Callable;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.zip.GZIPInputStream;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

public class HttpRequest {
	public static final String CHARSET_UTF8 = "UTF-8";
	public static final String CONTENT_TYPE_FORM = "application/x-www-form-urlencoded";
	public static final String CONTENT_TYPE_JSON = "application/json";
	public static final String ENCODING_GZIP = "gzip";
	public static final String HEADER_ACCEPT = "Accept";
	public static final String HEADER_ACCEPT_CHARSET = "Accept-Charset";
	public static final String HEADER_ACCEPT_ENCODING = "Accept-Encoding";
	public static final String HEADER_AUTHORIZATION = "Authorization";
	public static final String HEADER_CACHE_CONTROL = "Cache-Control";
	public static final String HEADER_CONTENT_ENCODING = "Content-Encoding";
	public static final String HEADER_CONTENT_LENGTH = "Content-Length";
	public static final String HEADER_CONTENT_TYPE = "Content-Type";
	public static final String HEADER_DATE = "Date";
	public static final String HEADER_ETAG = "ETag";
	public static final String HEADER_EXPIRES = "Expires";
	public static final String HEADER_IF_NONE_MATCH = "If-None-Match";
	public static final String HEADER_LAST_MODIFIED = "Last-Modified";
	public static final String HEADER_LOCATION = "Location";
	public static final String HEADER_SERVER = "Server";
	public static final String HEADER_USER_AGENT = "User-Agent";
	public static final String METHOD_DELETE = "DELETE";
	public static final String METHOD_GET = "GET";
	public static final String METHOD_HEAD = "HEAD";
	public static final String METHOD_OPTIONS = "OPTIONS";
	public static final String METHOD_POST = "POST";
	public static final String METHOD_PUT = "PUT";
	public static final String METHOD_TRACE = "TRACE";
	public static final String PARAM_CHARSET = "charset";
	private static final String BOUNDARY = "00content0boundary00";
	private static final String CONTENT_TYPE_MULTIPART = "multipart/form-data; boundary=00content0boundary00";
	private static final String CRLF = "\r\n";
	private static final String[] EMPTY_STRINGS = new String[0];
	private static SSLSocketFactory TRUSTED_FACTORY;
	private static HostnameVerifier TRUSTED_VERIFIER;
	private final HttpURLConnection connection;
	private RequestOutputStream output;
	private boolean multipart;
	private boolean form;
	private boolean ignoreCloseExceptions = true;

	private boolean uncompress = false;

	private int bufferSize = 8192;

	private static String getValidCharset(String charset) {
		if ((charset != null) && (charset.length() > 0)) {
			return charset;
		}
		return "UTF-8";
	}

	private static SSLSocketFactory getTrustedFactory()
			throws HttpRequest.HttpRequestException {
		if (TRUSTED_FACTORY == null) {
			TrustManager[] trustAllCerts = { new X509TrustManager() {
				public X509Certificate[] getAcceptedIssuers() {
					return new X509Certificate[0];
				}

				public void checkClientTrusted(X509Certificate[] chain,
						String authType) {
				}

				public void checkServerTrusted(X509Certificate[] chain,
						String authType) {
				}
			} };
			try {
				SSLContext context = SSLContext.getInstance("TLS");
				context.init(null, trustAllCerts, new SecureRandom());
				TRUSTED_FACTORY = context.getSocketFactory();
			} catch (GeneralSecurityException e) {
				IOException ioException = new IOException(
						"Security exception configuring SSL context");
				ioException.initCause(e);
				throw new HttpRequest.HttpRequestException(ioException);
			}
		}

		return TRUSTED_FACTORY;
	}

	private static HostnameVerifier getTrustedVerifier() {
		if (TRUSTED_VERIFIER == null) {
			TRUSTED_VERIFIER = new HostnameVerifier() {
				public boolean verify(String hostname, SSLSession session) {
					return true;
				}
			};
		}
		return TRUSTED_VERIFIER;
	}

	private static StringBuilder addPathSeparator(String baseUrl,
			StringBuilder result) {
		if (baseUrl.indexOf(58) + 2 == baseUrl.lastIndexOf(47))
			result.append('/');
		return result;
	}

	private static StringBuilder addParamPrefix(String baseUrl,
			StringBuilder result) {
		int queryStart = baseUrl.indexOf(63);
		int lastChar = result.length() - 1;
		if (queryStart == -1)
			result.append('?');
		else if ((queryStart < lastChar) && (baseUrl.charAt(lastChar) != '&'))
			result.append('&');
		return result;
	}

	public static String encode(CharSequence url)
			throws HttpRequest.HttpRequestException {
		URL parsed;
		try {
			parsed = new URL(url.toString());
		} catch (IOException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
		URL parsed;
		String host = parsed.getHost();
		int port = parsed.getPort();
		if (port != -1)
			host = host + ':' + Integer.toString(port);
		try {
			return new URI(parsed.getProtocol(), host, parsed.getPath(),
					parsed.getQuery(), null).toASCIIString();
		} catch (URISyntaxException e) {
			IOException io = new IOException("Parsing URI failed");
			io.initCause(e);
			throw new HttpRequest.HttpRequestException(io);
		}
	}

	public static String append(CharSequence url, Map params) {
		String baseUrl = url.toString();
		if ((params == null) || (params.isEmpty())) {
			return baseUrl;
		}
		StringBuilder result = new StringBuilder(baseUrl);

		addPathSeparator(baseUrl, result);
		addParamPrefix(baseUrl, result);

		Iterator iterator = params.entrySet().iterator();
		Map.Entry entry = (Map.Entry) iterator.next();
		result.append(entry.getKey().toString());
		result.append('=');
		Object value = entry.getValue();
		if (value != null) {
			result.append(value);
		}
		while (iterator.hasNext()) {
			result.append('&');
			entry = (Map.Entry) iterator.next();
			result.append(entry.getKey().toString());
			result.append('=');
			value = entry.getValue();
			if (value != null) {
				result.append(value);
			}
		}
		return result.toString();
	}

	public static String append(CharSequence url, Object[] params) {
		String baseUrl = url.toString();
		if ((params == null) || (params.length == 0)) {
			return baseUrl;
		}
		if (params.length % 2 != 0) {
			throw new IllegalArgumentException(
					"Must specify an even number of parameter names/values");
		}
		StringBuilder result = new StringBuilder(baseUrl);

		addPathSeparator(baseUrl, result);
		addParamPrefix(baseUrl, result);

		result.append(params[0]);
		result.append('=');
		Object value = params[1];
		if (value != null) {
			result.append(value);
		}
		for (int i = 2; i < params.length; i += 2) {
			result.append('&');
			result.append(params[i]);
			result.append('=');
			value = params[(i + 1)];
			if (value != null) {
				result.append(value);
			}
		}
		return result.toString();
	}

	public static HttpRequest get(CharSequence url)
			throws HttpRequest.HttpRequestException {
		return new HttpRequest(url, "GET");
	}

	public static HttpRequest get(URL url)
			throws HttpRequest.HttpRequestException {
		return new HttpRequest(url, "GET");
	}

	public static HttpRequest get(CharSequence baseUrl, Map params,
			boolean encode) {
		String url = append(baseUrl, params);
		return get((encode) ? encode(url) : url);
	}

	public static HttpRequest get(CharSequence baseUrl, boolean encode,
			Object[] params) {
		String url = append(baseUrl, params);
		return get((encode) ? encode(url) : url);
	}

	public static HttpRequest post(CharSequence url)
			throws HttpRequest.HttpRequestException {
		return new HttpRequest(url, "POST");
	}

	public static HttpRequest post(URL url)
			throws HttpRequest.HttpRequestException {
		return new HttpRequest(url, "POST");
	}

	public static HttpRequest post(CharSequence baseUrl, Map params,
			boolean encode) {
		String url = append(baseUrl, params);
		return post((encode) ? encode(url) : url);
	}

	public static HttpRequest post(CharSequence baseUrl, boolean encode,
			Object[] params) {
		String url = append(baseUrl, params);
		return post((encode) ? encode(url) : url);
	}

	public static HttpRequest put(CharSequence url)
			throws HttpRequest.HttpRequestException {
		return new HttpRequest(url, "PUT");
	}

	public static HttpRequest put(URL url)
			throws HttpRequest.HttpRequestException {
		return new HttpRequest(url, "PUT");
	}

	public static HttpRequest put(CharSequence baseUrl, Map params,
			boolean encode) {
		String url = append(baseUrl, params);
		return put((encode) ? encode(url) : url);
	}

	public static HttpRequest put(CharSequence baseUrl, boolean encode,
			Object[] params) {
		String url = append(baseUrl, params);
		return put((encode) ? encode(url) : url);
	}

	public static HttpRequest delete(CharSequence url)
			throws HttpRequest.HttpRequestException {
		return new HttpRequest(url, "DELETE");
	}

	public static HttpRequest delete(URL url)
			throws HttpRequest.HttpRequestException {
		return new HttpRequest(url, "DELETE");
	}

	public static HttpRequest delete(CharSequence baseUrl, Map params,
			boolean encode) {
		String url = append(baseUrl, params);
		return delete((encode) ? encode(url) : url);
	}

	public static HttpRequest delete(CharSequence baseUrl, boolean encode,
			Object[] params) {
		String url = append(baseUrl, params);
		return delete((encode) ? encode(url) : url);
	}

	public static HttpRequest head(CharSequence url)
			throws HttpRequest.HttpRequestException {
		return new HttpRequest(url, "HEAD");
	}

	public static HttpRequest head(URL url)
			throws HttpRequest.HttpRequestException {
		return new HttpRequest(url, "HEAD");
	}

	public static HttpRequest head(CharSequence baseUrl, Map params,
			boolean encode) {
		String url = append(baseUrl, params);
		return head((encode) ? encode(url) : url);
	}

	public static HttpRequest head(CharSequence baseUrl, boolean encode,
			Object[] params) {
		String url = append(baseUrl, params);
		return head((encode) ? encode(url) : url);
	}

	public static HttpRequest options(CharSequence url)
			throws HttpRequest.HttpRequestException {
		return new HttpRequest(url, "OPTIONS");
	}

	public static HttpRequest options(URL url)
			throws HttpRequest.HttpRequestException {
		return new HttpRequest(url, "OPTIONS");
	}

	public static HttpRequest trace(CharSequence url)
			throws HttpRequest.HttpRequestException {
		return new HttpRequest(url, "TRACE");
	}

	public static HttpRequest trace(URL url)
			throws HttpRequest.HttpRequestException {
		return new HttpRequest(url, "TRACE");
	}

	public static void keepAlive(boolean keepAlive) {
		setProperty("http.keepAlive", Boolean.toString(keepAlive));
	}

	public static void proxyHost(String host) {
		setProperty("http.proxyHost", host);
		setProperty("https.proxyHost", host);
	}

	public static void proxyPort(int port) {
		String portValue = Integer.toString(port);
		setProperty("http.proxyPort", portValue);
		setProperty("https.proxyPort", portValue);
	}

	public static void nonProxyHosts(String[] hosts) {
		if ((hosts != null) && (hosts.length > 0)) {
			StringBuilder separated = new StringBuilder();
			int last = hosts.length - 1;
			for (int i = 0; i < last; ++i)
				separated.append(hosts[i]).append('|');
			separated.append(hosts[last]);
			setProperty("http.nonProxyHosts", separated.toString());
		} else {
			setProperty("http.nonProxyHosts", null);
		}
	}

	private static final String setProperty(String name, String value) {
		PrivilegedAction action;
		PrivilegedAction action;
		if (value != null)
			action = new PrivilegedAction(name, value) {
				public String run() {
					return System.setProperty(HttpRequest.this, this.val$value);
				}
			};
		else
			action = new PrivilegedAction(name) {
				public String run() {
					return System.clearProperty(HttpRequest.this);
				}
			};
		return ((String) AccessController.doPrivileged(action));
	}

	public HttpRequest(CharSequence url, String method)
			throws HttpRequest.HttpRequestException {
		try {
			this.connection = ((HttpURLConnection) new URL(url.toString())
					.openConnection());
			this.connection.setRequestMethod(method);
		} catch (IOException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
	}

	public HttpRequest(URL url, String method)
			throws HttpRequest.HttpRequestException {
		try {
			this.connection = ((HttpURLConnection) url.openConnection());
			this.connection.setRequestMethod(method);
		} catch (IOException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
	}

	public String toString() {
		return this.connection.getRequestMethod() + ' '
				+ this.connection.getURL();
	}

	public HttpURLConnection getConnection() {
		return this.connection;
	}

	public HttpRequest ignoreCloseExceptions(boolean ignore) {
		this.ignoreCloseExceptions = ignore;
		return this;
	}

	public boolean ignoreCloseExceptions() {
		return this.ignoreCloseExceptions;
	}

	public int code() throws HttpRequest.HttpRequestException {
		try {
			closeOutput();
			return this.connection.getResponseCode();
		} catch (IOException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
	}

	public HttpRequest code(AtomicInteger output)
			throws HttpRequest.HttpRequestException {
		output.set(code());
		return this;
	}

	public boolean ok() throws HttpRequest.HttpRequestException {
		return (200 == code());
	}

	public boolean created() throws HttpRequest.HttpRequestException {
		return (201 == code());
	}

	public boolean serverError() throws HttpRequest.HttpRequestException {
		return (500 == code());
	}

	public boolean badRequest() throws HttpRequest.HttpRequestException {
		return (400 == code());
	}

	public boolean notFound() throws HttpRequest.HttpRequestException {
		return (404 == code());
	}

	public boolean notModified() throws HttpRequest.HttpRequestException {
		return (304 == code());
	}

	public String message() throws HttpRequest.HttpRequestException {
		try {
			closeOutput();
			return this.connection.getResponseMessage();
		} catch (IOException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
	}

	public HttpRequest disconnect() {
		this.connection.disconnect();
		return this;
	}

	public HttpRequest chunk(int size) {
		this.connection.setChunkedStreamingMode(size);
		return this;
	}

	public HttpRequest bufferSize(int size) {
		if (size < 1)
			throw new IllegalArgumentException("Size must be greater than zero");
		this.bufferSize = size;
		return this;
	}

	public int bufferSize() {
		return this.bufferSize;
	}

	public HttpRequest uncompress(boolean uncompress) {
		this.uncompress = uncompress;
		return this;
	}

	protected ByteArrayOutputStream byteStream() {
		int size = contentLength();
		if (size > 0) {
			return new ByteArrayOutputStream(size);
		}
		return new ByteArrayOutputStream();
	}

	public String body(String charset) throws HttpRequest.HttpRequestException {
		ByteArrayOutputStream output = byteStream();
		try {
			copy(buffer(), output);
			return output.toString(getValidCharset(charset));
		} catch (IOException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
	}

	public String body() throws HttpRequest.HttpRequestException {
		return body(charset());
	}

	public boolean isBodyEmpty() throws HttpRequest.HttpRequestException {
		return (contentLength() == 0);
	}

	public byte[] bytes() throws HttpRequest.HttpRequestException {
		ByteArrayOutputStream output = byteStream();
		try {
			copy(buffer(), output);
		} catch (IOException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
		return output.toByteArray();
	}

	public BufferedInputStream buffer() throws HttpRequest.HttpRequestException {
		return new BufferedInputStream(stream(), this.bufferSize);
	}

	public InputStream stream() throws HttpRequest.HttpRequestException {
		InputStream stream;
		if (code() < 400) {
			InputStream stream;
			try {
				stream = this.connection.getInputStream();
			} catch (IOException e) {
				throw new HttpRequest.HttpRequestException(e);
			}
		} else {
			stream = this.connection.getErrorStream();
			if (stream == null) {
				try {
					stream = this.connection.getInputStream();
				} catch (IOException e) {
					throw new HttpRequest.HttpRequestException(e);
				}
			}
		}
		if ((!(this.uncompress)) || (!("gzip".equals(contentEncoding()))))
			return stream;
		try {
			return new GZIPInputStream(stream);
		} catch (IOException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
	}

	public InputStreamReader reader(String charset)
			throws HttpRequest.HttpRequestException {
		try {
			return new InputStreamReader(stream(), getValidCharset(charset));
		} catch (UnsupportedEncodingException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
	}

	public InputStreamReader reader() throws HttpRequest.HttpRequestException {
		return reader(charset());
	}

	public BufferedReader bufferedReader(String charset)
			throws HttpRequest.HttpRequestException {
		return new BufferedReader(reader(charset), this.bufferSize);
	}

	public BufferedReader bufferedReader()
			throws HttpRequest.HttpRequestException {
		return bufferedReader(charset());
	}

	public HttpRequest receive(File file)
			throws HttpRequest.HttpRequestException {
		OutputStream output;
		try {
			output = new BufferedOutputStream(new FileOutputStream(file),
					this.bufferSize);
		} catch (FileNotFoundException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
		OutputStream output;
		return ((HttpRequest) new CloseOperation(output,
				this.ignoreCloseExceptions, output) {
			protected HttpRequest run()
					throws HttpRequest.HttpRequestException, IOException {
				return HttpRequest.this.receive(this.val$output);
			}
		}.call());
	}

	public HttpRequest receive(OutputStream output)
			throws HttpRequest.HttpRequestException {
		try {
			return copy(buffer(), output);
		} catch (IOException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
	}

	public HttpRequest receive(PrintStream output)
			throws HttpRequest.HttpRequestException {
		return receive(output);
	}

	public HttpRequest receive(Appendable appendable)
			throws HttpRequest.HttpRequestException {
		BufferedReader reader = bufferedReader();
		return ((HttpRequest) new CloseOperation(reader,
				this.ignoreCloseExceptions, reader, appendable) {
			public HttpRequest run() throws IOException {
				CharBuffer buffer = CharBuffer
						.allocate(HttpRequest.this.bufferSize);
				int read;
				while ((read = this.val$reader.read(buffer)) != -1) {
					int read;
					buffer.rewind();
					this.val$appendable.append(buffer, 0, read);
					buffer.rewind();
				}
				return HttpRequest.this;
			}
		}.call());
	}

	public HttpRequest receive(Writer writer)
			throws HttpRequest.HttpRequestException {
		BufferedReader reader = bufferedReader();
		return ((HttpRequest) new CloseOperation(reader,
				this.ignoreCloseExceptions, reader, writer) {
			public HttpRequest run() throws IOException {
				return HttpRequest.this.copy(this.val$reader, this.val$writer);
			}
		}.call());
	}

	public HttpRequest readTimeout(int timeout) {
		this.connection.setReadTimeout(timeout);
		return this;
	}

	public HttpRequest connectTimeout(int timeout) {
		this.connection.setConnectTimeout(timeout);
		return this;
	}

	public HttpRequest header(String name, String value) {
		this.connection.setRequestProperty(name, value);
		return this;
	}

	public HttpRequest header(String name, Number value) {
		return header(name, (value != null) ? value.toString() : null);
	}

	public HttpRequest headers(Map headers) {
		if (!(headers.isEmpty()))
			for (Map.Entry header : headers.entrySet())
				header(header);
		return this;
	}

	public HttpRequest header(Map.Entry header) {
		return header((String) header.getKey(), (String) header.getValue());
	}

	public String header(String name) throws HttpRequest.HttpRequestException {
		closeOutputQuietly();
		return this.connection.getHeaderField(name);
	}

	public Map> headers()
			throws HttpRequest.HttpRequestException {
		closeOutputQuietly();
		return this.connection.getHeaderFields();
	}

	public long dateHeader(String name) throws HttpRequest.HttpRequestException {
		return dateHeader(name, -1L);
	}

	public long dateHeader(String name, long defaultValue)
			throws HttpRequest.HttpRequestException {
		closeOutputQuietly();
		return this.connection.getHeaderFieldDate(name, defaultValue);
	}

	public int intHeader(String name) throws HttpRequest.HttpRequestException {
		return intHeader(name, -1);
	}

	public int intHeader(String name, int defaultValue)
			throws HttpRequest.HttpRequestException {
		closeOutputQuietly();
		return this.connection.getHeaderFieldInt(name, defaultValue);
	}

	public String[] headers(String name) {
		Map headers = headers();
		if ((headers == null) || (headers.isEmpty())) {
			return EMPTY_STRINGS;
		}
		List values = (List) headers.get(name);
		if ((values != null) && (!(values.isEmpty()))) {
			return ((String[]) values.toArray(new String[values.size()]));
		}
		return EMPTY_STRINGS;
	}

	public String parameter(String headerName, String paramName) {
		return getParam(header(headerName), paramName);
	}

	public Map parameters(String headerName) {
		return getParams(header(headerName));
	}

	protected Map getParams(String header) {
		if ((header == null) || (header.length() == 0)) {
			return Collections.emptyMap();
		}
		int headerLength = header.length();
		int start = header.indexOf(59) + 1;
		if ((start == 0) || (start == headerLength)) {
			return Collections.emptyMap();
		}
		int end = header.indexOf(59, start);
		if (end == -1) {
			end = headerLength;
		}
		Map params = new LinkedHashMap();
		while (start < end) {
			int nameEnd = header.indexOf(61, start);
			if ((nameEnd != -1) && (nameEnd < end)) {
				String name = header.substring(start, nameEnd).trim();
				if (name.length() > 0) {
					String value = header.substring(nameEnd + 1, end).trim();
					int length = value.length();
					if (length != 0) {
						if ((length > 2) && ('"' == value.charAt(0))
								&& ('"' == value.charAt(length - 1)))
							params.put(name, value.substring(1, length - 1));
						else
							params.put(name, value);
					}
				}
			}
			start = end + 1;
			end = header.indexOf(59, start);
			if (end == -1) {
				end = headerLength;
			}
		}
		return params;
	}

	protected String getParam(String value, String paramName) {
		if ((value == null) || (value.length() == 0)) {
			return null;
		}
		int length = value.length();
		int start = value.indexOf(59) + 1;
		if ((start == 0) || (start == length)) {
			return null;
		}
		int end = value.indexOf(59, start);
		if (end == -1) {
			end = length;
		}
		while (start < end) {
			int nameEnd = value.indexOf(61, start);
			if ((nameEnd != -1)
					&& (nameEnd < end)
					&& (paramName
							.equals(value.substring(start, nameEnd).trim()))) {
				String paramValue = value.substring(nameEnd + 1, end).trim();
				int valueLength = paramValue.length();
				if (valueLength != 0) {
					if ((valueLength > 2) && ('"' == paramValue.charAt(0))
							&& ('"' == paramValue.charAt(valueLength - 1))) {
						return paramValue.substring(1, valueLength - 1);
					}
					return paramValue;
				}
			}
			start = end + 1;
			end = value.indexOf(59, start);
			if (end == -1) {
				end = length;
			}
		}
		return null;
	}

	public String charset() {
		return parameter("Content-Type", "charset");
	}

	public HttpRequest userAgent(String value) {
		return header("User-Agent", value);
	}

	public HttpRequest useCaches(boolean useCaches) {
		this.connection.setUseCaches(useCaches);
		return this;
	}

	public HttpRequest acceptEncoding(String value) {
		return header("Accept-Encoding", value);
	}

	public HttpRequest acceptGzipEncoding() {
		return acceptEncoding("gzip");
	}

	public HttpRequest acceptCharset(String value) {
		return header("Accept-Charset", value);
	}

	public String contentEncoding() {
		return header("Content-Encoding");
	}

	public String server() {
		return header("Server");
	}

	public long date() {
		return dateHeader("Date");
	}

	public String cacheControl() {
		return header("Cache-Control");
	}

	public String eTag() {
		return header("ETag");
	}

	public long expires() {
		return dateHeader("Expires");
	}

	public long lastModified() {
		return dateHeader("Last-Modified");
	}

	public String location() {
		return header("Location");
	}

	public HttpRequest authorization(String value) {
		return header("Authorization", value);
	}

	public HttpRequest basic(String name, String password) {
		return authorization("Basic "
				+ Base64.encode(new StringBuilder(String.valueOf(name))
						.append(':').append(password).toString()));
	}

	public HttpRequest ifModifiedSince(long value) {
		this.connection.setIfModifiedSince(value);
		return this;
	}

	public HttpRequest ifNoneMatch(String value) {
		return header("If-None-Match", value);
	}

	public HttpRequest contentType(String value) {
		return contentType(value, null);
	}

	public HttpRequest contentType(String value, String charset) {
		if ((charset != null) && (charset.length() > 0)) {
			return header("Content-Type", value + "; charset=" + charset);
		}
		return header("Content-Type", value);
	}

	public String contentType() {
		return header("Content-Type");
	}

	public int contentLength() {
		return intHeader("Content-Length");
	}

	public HttpRequest contentLength(String value) {
		return contentLength(Integer.parseInt(value));
	}

	public HttpRequest contentLength(int value) {
		this.connection.setFixedLengthStreamingMode(value);
		return this;
	}

	public HttpRequest accept(String value) {
		return header("Accept", value);
	}

	public HttpRequest acceptJson() {
		return accept("application/json");
	}

	protected HttpRequest copy(InputStream input, OutputStream output)
			throws IOException {
		return ((HttpRequest) new CloseOperation(input,
				this.ignoreCloseExceptions, input, output) {
			public HttpRequest run() throws IOException {
				byte[] buffer = new byte[HttpRequest.this.bufferSize];
				int read;
				while ((read = this.val$input.read(buffer)) != -1) {
					int read;
					this.val$output.write(buffer, 0, read);
				}
				return HttpRequest.this;
			}
		}.call());
	}

	protected HttpRequest copy(Reader input, Writer output) throws IOException {
		return ((HttpRequest) new CloseOperation(input,
				this.ignoreCloseExceptions, input, output) {
			public HttpRequest run() throws IOException {
				char[] buffer = new char[HttpRequest.this.bufferSize];
				int read;
				while ((read = this.val$input.read(buffer)) != -1) {
					int read;
					this.val$output.write(buffer, 0, read);
				}
				return HttpRequest.this;
			}
		}.call());
	}

	protected HttpRequest closeOutput() throws IOException {
		if (this.output == null)
			return this;
		if (this.multipart)
			this.output.write("\r\n--00content0boundary00--\r\n");
		if (this.ignoreCloseExceptions)
			try {
				this.output.close();
			} catch (IOException localIOException) {
			}
		else
			this.output.close();
		this.output = null;
		return this;
	}

	protected HttpRequest closeOutputQuietly()
			throws HttpRequest.HttpRequestException {
		try {
			return closeOutput();
		} catch (IOException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
	}

	protected HttpRequest openOutput() throws IOException {
		if (this.output != null)
			return this;
		this.connection.setDoOutput(true);
		String charset = getParam(
				this.connection.getRequestProperty("Content-Type"), "charset");
		this.output = new RequestOutputStream(
				this.connection.getOutputStream(), charset, this.bufferSize);
		return this;
	}

	protected HttpRequest startPart() throws IOException {
		if (!(this.multipart)) {
			this.multipart = true;
			contentType("multipart/form-data; boundary=00content0boundary00")
					.openOutput();
			this.output.write("--00content0boundary00\r\n");
		} else {
			this.output.write("\r\n--00content0boundary00\r\n");
		}
		return this;
	}

	protected HttpRequest writePartHeader(String name, String filename)
			throws IOException {
		return writePartHeader(name, filename, null);
	}

	protected HttpRequest writePartHeader(String name, String filename,
			String contentType) throws IOException {
		StringBuilder partBuffer = new StringBuilder();
		partBuffer.append("form-data; name=\"").append(name);
		if (filename != null)
			partBuffer.append("\"; filename=\"").append(filename);
		partBuffer.append('"');
		partHeader("Content-Disposition", partBuffer.toString());
		if (contentType != null)
			partHeader("Content-Type", contentType);
		return send("\r\n");
	}

	public HttpRequest part(String name, String part) {
		return part(name, null, part);
	}

	public HttpRequest part(String name, String filename, String part)
			throws HttpRequest.HttpRequestException {
		return part(name, filename, null, part);
	}

	public HttpRequest part(String name, String filename, String contentType,
			String part) throws HttpRequest.HttpRequestException {
		try {
			startPart();
			writePartHeader(name, filename, contentType);
			this.output.write(part);
		} catch (IOException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
		return this;
	}

	public HttpRequest part(String name, Number part)
			throws HttpRequest.HttpRequestException {
		return part(name, null, part);
	}

	public HttpRequest part(String name, String filename, Number part)
			throws HttpRequest.HttpRequestException {
		return part(name, filename, (part != null) ? part.toString() : null);
	}

	public HttpRequest part(String name, File part)
			throws HttpRequest.HttpRequestException {
		return part(name, null, part);
	}

	public HttpRequest part(String name, String filename, File part)
			throws HttpRequest.HttpRequestException {
		return part(name, filename, null, part);
	}

	public HttpRequest part(String name, String filename, String contentType,
			File part) throws HttpRequest.HttpRequestException {
		InputStream stream;
		try {
			stream = new BufferedInputStream(new FileInputStream(part));
		} catch (IOException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
		InputStream stream;
		return part(name, filename, contentType, stream);
	}

	public HttpRequest part(String name, InputStream part)
			throws HttpRequest.HttpRequestException {
		return part(name, null, null, part);
	}

	public HttpRequest part(String name, String filename, String contentType,
			InputStream part) throws HttpRequest.HttpRequestException {
		try {
			startPart();
			writePartHeader(name, filename, contentType);
			copy(part, this.output);
		} catch (IOException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
		return this;
	}

	public HttpRequest partHeader(String name, String value)
			throws HttpRequest.HttpRequestException {
		return send(name).send(": ").send(value).send("\r\n");
	}

	public HttpRequest send(File input) throws HttpRequest.HttpRequestException {
		InputStream stream;
		try {
			stream = new BufferedInputStream(new FileInputStream(input));
		} catch (FileNotFoundException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
		InputStream stream;
		return send(stream);
	}

	public HttpRequest send(byte[] input)
			throws HttpRequest.HttpRequestException {
		return send(new ByteArrayInputStream(input));
	}

	public HttpRequest send(InputStream input)
			throws HttpRequest.HttpRequestException {
		try {
			openOutput();
			copy(input, this.output);
		} catch (IOException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
		return this;
	}

	public HttpRequest send(Reader input)
			throws HttpRequest.HttpRequestException {
		try {
			openOutput();
		} catch (IOException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
		Writer writer = new OutputStreamWriter(this.output,
				this.output.encoder.charset());
		return ((HttpRequest) new FlushOperation(writer, input, writer) {
			protected HttpRequest run() throws IOException {
				return HttpRequest.this.copy(this.val$input, this.val$writer);
			}
		}.call());
	}

	public HttpRequest send(CharSequence value)
			throws HttpRequest.HttpRequestException {
		try {
			openOutput();
			this.output.write(value.toString());
		} catch (IOException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
		return this;
	}

	public OutputStreamWriter writer() throws HttpRequest.HttpRequestException {
		try {
			openOutput();
			return new OutputStreamWriter(this.output,
					this.output.encoder.charset());
		} catch (IOException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
	}

	public HttpRequest form(Map values)
			throws HttpRequest.HttpRequestException {
		return form(values, "UTF-8");
	}

	public HttpRequest form(Map.Entry entry)
			throws HttpRequest.HttpRequestException {
		return form(entry, "UTF-8");
	}

	public HttpRequest form(Map.Entry entry, String charset)
			throws HttpRequest.HttpRequestException {
		return form(entry.getKey(), entry.getValue(), charset);
	}

	public HttpRequest form(Object name, Object value)
			throws HttpRequest.HttpRequestException {
		return form(name, value, "UTF-8");
	}

	public HttpRequest form(Object name, Object value, String charset)
			throws HttpRequest.HttpRequestException {
		boolean first = !(this.form);
		if (first) {
			contentType("application/x-www-form-urlencoded", charset);
			this.form = true;
		}
		charset = getValidCharset(charset);
		try {
			openOutput();
			if (!(first))
				this.output.write(38);
			this.output.write(URLEncoder.encode(name.toString(), charset));
			this.output.write(61);
			if (value != null)
				this.output.write(URLEncoder.encode(value.toString(), charset));
		} catch (IOException e) {
			throw new HttpRequest.HttpRequestException(e);
		}
		return this;
	}

	public HttpRequest form(Map values, String charset)
			throws HttpRequest.HttpRequestException {
		if (!(values.isEmpty()))
			for (Map.Entry entry : values.entrySet())
				form(entry, charset);
		return this;
	}

	public HttpRequest trustAllCerts() throws HttpRequest.HttpRequestException {
		if (this.connection instanceof HttpsURLConnection)
			((HttpsURLConnection) this.connection)
					.setSSLSocketFactory(getTrustedFactory());
		return this;
	}

	public HttpRequest trustAllHosts() {
		if (this.connection instanceof HttpsURLConnection)
			((HttpsURLConnection) this.connection)
					.setHostnameVerifier(getTrustedVerifier());
		return this;
	}

	public static class Base64 {
		private static final byte EQUALS_SIGN = 61;
		private static final String PREFERRED_ENCODING = "US-ASCII";
		private static final byte[] _STANDARD_ALPHABET = { 65, 66, 67, 68, 69,
				70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85,
				86, 87, 88, 89, 90, 97, 98, 99, 100, 101, 102, 103, 104, 105,
				106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117,
				118, 119, 120, 121, 122, 48, 49, 50, 51, 52, 53, 54, 55, 56,
				57, 43, 47 };

		private static byte[] encode3to4(byte[] source, int srcOffset,
				int numSigBytes, byte[] destination, int destOffset) {
			byte[] ALPHABET = _STANDARD_ALPHABET;

			int inBuff = ((numSigBytes > 0) ? source[srcOffset] << 24 >>> 8 : 0)
					| ((numSigBytes > 1) ? source[(srcOffset + 1)] << 24 >>> 16
							: 0)
					| ((numSigBytes > 2) ? source[(srcOffset + 2)] << 24 >>> 24
							: 0);

			switch (numSigBytes) {
			case 3:
				destination[destOffset] = ALPHABET[(inBuff >>> 18)];
				destination[(destOffset + 1)] = ALPHABET[(inBuff >>> 12 & 0x3F)];
				destination[(destOffset + 2)] = ALPHABET[(inBuff >>> 6 & 0x3F)];
				destination[(destOffset + 3)] = ALPHABET[(inBuff & 0x3F)];
				return destination;
			case 2:
				destination[destOffset] = ALPHABET[(inBuff >>> 18)];
				destination[(destOffset + 1)] = ALPHABET[(inBuff >>> 12 & 0x3F)];
				destination[(destOffset + 2)] = ALPHABET[(inBuff >>> 6 & 0x3F)];
				destination[(destOffset + 3)] = 61;
				return destination;
			case 1:
				destination[destOffset] = ALPHABET[(inBuff >>> 18)];
				destination[(destOffset + 1)] = ALPHABET[(inBuff >>> 12 & 0x3F)];
				destination[(destOffset + 2)] = 61;
				destination[(destOffset + 3)] = 61;
				return destination;
			}

			return destination;
		}

		public static String encode(String string) {
			byte[] bytes;
			byte[] bytes;
			try {
				bytes = string.getBytes("US-ASCII");
			} catch (UnsupportedEncodingException localUnsupportedEncodingException) {
				bytes = string.getBytes();
			}
			return encodeBytes(bytes);
		}

		public static String encodeBytes(byte[] source) {
			return encodeBytes(source, 0, source.length);
		}

		public static String encodeBytes(byte[] source, int off, int len) {
			byte[] encoded = encodeBytesToBytes(source, off, len);
			try {
				return new String(encoded, "US-ASCII");
			} catch (UnsupportedEncodingException localUnsupportedEncodingException) {
			}
			return new String(encoded);
		}

		public static byte[] encodeBytesToBytes(byte[] source, int off, int len) {
			if (source == null) {
				throw new NullPointerException("Cannot serialize a null array.");
			}
			if (off < 0) {
				throw new IllegalArgumentException(
						"Cannot have negative offset: " + off);
			}
			if (len < 0) {
				throw new IllegalArgumentException(
						"Cannot have length offset: " + len);
			}
			if (off + len > source.length) {
				throw new IllegalArgumentException(
						String.format(
								"Cannot have offset of %d and length of %d with array of length %d",
								new Object[] { Integer.valueOf(off),
										Integer.valueOf(len),
										Integer.valueOf(source.length) }));
			}

			int encLen = len / 3 * 4 + ((len % 3 > 0) ? 4 : 0);

			byte[] outBuff = new byte[encLen];

			int d = 0;
			int e = 0;
			int len2 = len - 2;
			for (; d < len2; e += 4) {
				encode3to4(source, d + off, 3, outBuff, e);

				d += 3;
			}

			if (d < len) {
				encode3to4(source, d + off, len - d, outBuff, e);
				e += 4;
			}

			if (e <= outBuff.length - 1) {
				byte[] finalOut = new byte[e];
				System.arraycopy(outBuff, 0, finalOut, 0, e);
				return finalOut;
			}
			return outBuff;
		}
	}

	protected static abstract class CloseOperation extends
			HttpRequest.Operation {
		private final Closeable closeable;
		private final boolean ignoreCloseExceptions;

		protected CloseOperation(Closeable closeable,
				boolean ignoreCloseExceptions) {
			this.closeable = closeable;
			this.ignoreCloseExceptions = ignoreCloseExceptions;
		}

		protected void done() throws IOException {
			if (this.closeable instanceof Flushable)
				((Flushable) this.closeable).flush();
			if (this.ignoreCloseExceptions)
				try {
					this.closeable.close();
				} catch (IOException localIOException) {
				}
			else
				this.closeable.close();
		}
	}

	protected static abstract class FlushOperation extends
			HttpRequest.Operation {
		private final Flushable flushable;

		protected FlushOperation(Flushable flushable) {
			this.flushable = flushable;
		}

		protected void done() throws IOException {
			this.flushable.flush();
		}
	}

	public static class HttpRequestException extends RuntimeException {
		private static final long serialVersionUID = -1170466989781746231L;

		protected HttpRequestException(IOException cause) {
			super(cause);
		}

		public IOException getCause() {
			return ((IOException) super.getCause());
		}
	}

	protected static abstract class Operation implements Callable {
		protected abstract V run() throws HttpRequest.HttpRequestException,
				IOException;

		protected abstract void done() throws IOException;

		public V call() throws HttpRequest.HttpRequestException {
			boolean thrown = false;
			try {
				return run();
			} catch (HttpRequest.HttpRequestException e) {
				throw e;
			} catch (IOException e) {
				throw new HttpRequest.HttpRequestException(e);
			} finally {
				try {
					done();
				} catch (IOException e) {
					if (!(thrown))
						throw new HttpRequest.HttpRequestException(e);
				}
			}
		}
	}

	public static class RequestOutputStream extends BufferedOutputStream {
		private final CharsetEncoder encoder;

		public RequestOutputStream(OutputStream stream, String charset,
				int bufferSize) {
			super(stream, bufferSize);

			this.encoder = Charset.forName(HttpRequest.access$0(charset))
					.newEncoder();
		}

		public RequestOutputStream write(String value) throws IOException {
			ByteBuffer bytes = this.encoder.encode(CharBuffer.wrap(value));

			super.write(bytes.array(), 0, bytes.limit());

			return this;
		}
	}
}