@Override
public void setIfModifiedSince(long newValue) {
super.setIfModifiedSince(newValue);
if (ifModifiedSince != 0) {
requestHeaders.set("If-Modified-Since", HttpDate.format(new Date(ifModifiedSince)));
} else {
requestHeaders.removeAll("If-Modified-Since");
}
}
protected void appendHeaders(Request.Builder builder, Map<String, String> headers) {
if (builder == null) {
throw new IllegalArgumentException("builder can not be empty!");
}
Headers.Builder headerBuilder = new Headers.Builder();
if (headers == null || headers.isEmpty()) return;
for (String key : headers.keySet()) {
headerBuilder.add(key, headers.get(key));
}
builder.headers(headerBuilder.build());
}
private HttpEngine newHttpEngine(
String method, Connection connection, RetryableOutputStream requestBody) throws IOException {
Request.Builder builder =
new Request.Builder()
.url(getURL())
.method(method, null /* No body; that's passed separately. */);
Headers headers = requestHeaders.build();
for (int i = 0; i < headers.size(); i++) {
builder.addHeader(headers.name(i), headers.value(i));
}
boolean bufferRequestBody;
if (fixedContentLength != -1) {
bufferRequestBody = false;
builder.header("Content-Length", Long.toString(fixedContentLength));
} else if (chunkLength > 0) {
bufferRequestBody = false;
builder.header("Transfer-Encoding", "chunked");
} else {
bufferRequestBody = true;
}
Request request = builder.build();
// If we're currently not using caches, make sure the engine's client doesn't have one.
OkHttpClient engineClient = client;
if (engineClient.getOkResponseCache() != null && !getUseCaches()) {
engineClient = client.clone().setOkResponseCache(null);
}
return new HttpEngine(engineClient, request, bufferRequestBody, connection, requestBody);
}
/**
* Reads an entry from an input stream. A typical entry looks like this:
*
* <pre>{@code
* http://google.com/foo
* GET
* 2
* Accept-Language: fr-CA
* Accept-Charset: UTF-8
* HTTP/1.1 200 OK
* 3
* Content-Type: image/png
* Content-Length: 100
* Cache-Control: max-age=600
* }</pre>
*
* <p>A typical HTTPS file looks like this:
*
* <pre>{@code
* https://google.com/foo
* GET
* 2
* Accept-Language: fr-CA
* Accept-Charset: UTF-8
* HTTP/1.1 200 OK
* 3
* Content-Type: image/png
* Content-Length: 100
* Cache-Control: max-age=600
*
* AES_256_WITH_MD5
* 2
* base64-encoded peerCertificate[0]
* base64-encoded peerCertificate[1]
* -1
* }</pre>
*
* The file is newline separated. The first two lines are the URL and the request method. Next
* is the number of HTTP Vary request header lines, followed by those lines.
*
* <p>Next is the response status line, followed by the number of HTTP response header lines,
* followed by those lines.
*
* <p>HTTPS responses also contain SSL session information. This begins with a blank line, and
* then a line containing the cipher suite. Next is the length of the peer certificate chain.
* These certificates are base64-encoded and appear each on their own line. The next line
* contains the length of the local certificate chain. These certificates are also
* base64-encoded and appear each on their own line. A length of -1 is used to encode a null
* array.
*/
public Entry(Source in) throws IOException {
try {
BufferedSource source = Okio.buffer(in);
url = source.readUtf8LineStrict();
requestMethod = source.readUtf8LineStrict();
if (readInt(source) == 1) {
MediaType contentType = MediaType.parse(source.readUtf8LineStrict());
int contentLength = readInt(source);
requestBody = RequestBody.create(contentType, source.readByteArray(contentLength));
} else {
requestBody = null;
}
Headers.Builder varyHeadersBuilder = new Headers.Builder();
int varyRequestHeaderLineCount = readInt(source);
for (int i = 0; i < varyRequestHeaderLineCount; i++) {
OkHttpAccess.addLenient(varyHeadersBuilder, source.readUtf8LineStrict());
}
varyHeaders = varyHeadersBuilder.build();
StatusLine statusLine = StatusLine.parse(source.readUtf8LineStrict());
protocol = statusLine.protocol;
code = statusLine.code;
message = statusLine.message;
Headers.Builder responseHeadersBuilder = new Headers.Builder();
int responseHeaderLineCount = readInt(source);
for (int i = 0; i < responseHeaderLineCount; i++) {
OkHttpAccess.addLenient(responseHeadersBuilder, source.readUtf8LineStrict());
}
responseHeaders = responseHeadersBuilder.build();
if (isHttps()) {
String blank = source.readUtf8LineStrict();
if (blank.length() > 0) {
throw new IOException("expected \"\" but was \"" + blank + "\"");
}
String cipherSuite = source.readUtf8LineStrict();
List<Certificate> peerCertificates = readCertificateList(source);
List<Certificate> localCertificates = readCertificateList(source);
handshake = Handshake.get(cipherSuite, peerCertificates, localCertificates);
} else {
handshake = null;
}
} finally {
in.close();
}
}
@Override
public final Map<String, List<String>> getRequestProperties() {
if (connected) {
throw new IllegalStateException(
"Cannot access request header fields after connection is set");
}
// For the request line property assigned to the null key, just use no proxy and HTTP 1.1.
Request request = new Request.Builder().url(getURL()).method(method, null).build();
String requestLine = RequestLine.get(request, null, 1);
return OkHeaders.toMultimap(requestHeaders.build(), requestLine);
}
private static Headers combine(Headers headers, Headers headers1)
{
boolean flag = false;
com.squareup.okhttp.Headers.Builder builder = new com.squareup.okhttp.Headers.Builder();
int k = headers.size();
int j = 0;
do
{
if (j >= k)
{
break;
}
String s = headers.name(j);
String s1 = headers.value(j);
if ((!"Warning".equalsIgnoreCase(s) || !s1.startsWith("1")) && (!OkHeaders.isEndToEnd(s) || headers1.get(s) == null))
{
builder.add(s, s1);
}
j++;
} while (true);
k = headers1.size();
j = ((flag) ? 1 : 0);
do
{
if (j >= k)
{
break;
}
headers = headers1.name(j);
if (!"Content-Length".equalsIgnoreCase(headers) && OkHeaders.isEndToEnd(headers))
{
builder.add(headers, headers1.value(j));
}
j++;
} while (true);
return builder.build();
}
/**
* Aggressively tries to get the final HTTP response, potentially making many HTTP requests in the
* process in order to cope with redirects and authentication.
*/
private HttpEngine getResponse() throws IOException {
initHttpEngine();
if (httpEngine.hasResponse()) {
return httpEngine;
}
while (true) {
if (!execute(true)) {
continue;
}
Retry retry = processResponseHeaders();
if (retry == Retry.NONE) {
httpEngine.automaticallyReleaseConnectionToPool();
return httpEngine;
}
// The first request was insufficient. Prepare for another...
String retryMethod = method;
OutputStream requestBody = httpEngine.getRequestBody();
// Although RFC 2616 10.3.2 specifies that a HTTP_MOVED_PERM
// redirect should keep the same method, Chrome, Firefox and the
// RI all issue GETs when following any redirect.
int responseCode = httpEngine.getResponse().code();
if (responseCode == HTTP_MULT_CHOICE
|| responseCode == HTTP_MOVED_PERM
|| responseCode == HTTP_MOVED_TEMP
|| responseCode == HTTP_SEE_OTHER) {
retryMethod = "GET";
requestHeaders.removeAll("Content-Length");
requestBody = null;
}
if (requestBody != null && !(requestBody instanceof RetryableOutputStream)) {
throw new HttpRetryException("Cannot retry streamed HTTP body", responseCode);
}
if (retry == Retry.DIFFERENT_CONNECTION) {
httpEngine.automaticallyReleaseConnectionToPool();
}
httpEngine.release(false);
httpEngine =
newHttpEngine(
retryMethod, httpEngine.getConnection(), (RetryableOutputStream) requestBody);
}
}
@Override
public final void addRequestProperty(String field, String value) {
if (connected) {
throw new IllegalStateException("Cannot add request property after connection is made");
}
if (field == null) {
throw new NullPointerException("field == null");
}
if (value == null) {
// Silently ignore null header values for backwards compatibility with older
// android versions as well as with other URLConnection implementations.
//
// Some implementations send a malformed HTTP header when faced with
// such requests, we respect the spec and ignore the header.
Platform.get().logW("Ignoring header " + field + " because its value was null.");
return;
}
if ("X-Android-Transports".equals(field)) {
setTransports(value, true /* append */);
} else {
requestHeaders.add(field, value);
}
}
@Override
public final String getRequestProperty(String field) {
if (field == null) return null;
return requestHeaders.get(field);
}