/**
* Prepares the HTTP headers and sends them to the server.
*
* <p>For streaming requests with a body, headers must be prepared <strong>before</strong> the
* output stream has been written to. Otherwise the body would need to be buffered!
*
* <p>For non-streaming requests with a body, headers must be prepared <strong>after</strong> the
* output stream has been written to and closed. This ensures that the {@code Content-Length}
* header field receives the proper value.
*/
public void writeRequestHeaders(Request request) throws IOException {
httpEngine.writingRequestHeaders();
String requestLine =
RequestLine.get(
request,
httpEngine.getConnection().getRoute().getProxy().type(),
httpEngine.getConnection().getProtocol());
httpConnection.writeRequest(request.headers(), requestLine);
}
@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);
}