@Override
public Sink createRequestBody(Request request, long contentLength) throws IOException {
if ("chunked".equalsIgnoreCase(request.header("Transfer-Encoding"))) {
// Stream a request body of unknown length.
return httpConnection.newChunkedSink();
}
if (contentLength != -1) {
// Stream a request body of a known length.
return httpConnection.newFixedLengthSink(contentLength);
}
throw new IllegalStateException(
"Cannot stream a request body without chunked encoding or a known content length!");
}
/**
* 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());
httpConnection.writeRequest(request.headers(), requestLine);
}