@Test
public void testIsResponseSelfTerminating() {
HttpResponse httpResponse;
boolean isResponseSelfTerminating;
// test cases from the scenarios listed in RFC 2616, section 4.4
// #1: 1.Any response message which "MUST NOT" include a message-body (such as the 1xx, 204, and
// 304 responses and any response to a HEAD request) is always terminated by the first empty
// line after the header fields, regardless of the entity-header fields present in the message.
httpResponse = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.CONTINUE);
isResponseSelfTerminating = ProxyUtils.isResponseSelfTerminating(httpResponse);
assertEquals(true, isResponseSelfTerminating);
// #2: 2.If a Transfer-Encoding header field (section 14.41) is present and has any value other
// than "identity", then the transfer-length is defined by use of the "chunked" transfer-coding
// (section 3.6), unless the message is terminated by closing the connection.
httpResponse = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
httpResponse.headers().add(HttpHeaders.Names.TRANSFER_ENCODING, "chunked");
isResponseSelfTerminating = ProxyUtils.isResponseSelfTerminating(httpResponse);
assertEquals(true, isResponseSelfTerminating);
httpResponse = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
httpResponse.headers().add(HttpHeaders.Names.TRANSFER_ENCODING, "gzip, chunked");
isResponseSelfTerminating = ProxyUtils.isResponseSelfTerminating(httpResponse);
assertEquals(true, isResponseSelfTerminating);
// chunked encoding is not last, so not self terminating
httpResponse = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
httpResponse.headers().add(HttpHeaders.Names.TRANSFER_ENCODING, "chunked, gzip");
isResponseSelfTerminating = ProxyUtils.isResponseSelfTerminating(httpResponse);
assertEquals(false, isResponseSelfTerminating);
// four encodings on two lines, chunked is not last, so not self terminating
httpResponse = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
httpResponse.headers().add(HttpHeaders.Names.TRANSFER_ENCODING, "gzip, chunked");
httpResponse.headers().add(HttpHeaders.Names.TRANSFER_ENCODING, "deflate, gzip");
isResponseSelfTerminating = ProxyUtils.isResponseSelfTerminating(httpResponse);
assertEquals(false, isResponseSelfTerminating);
// three encodings on two lines, chunked is last, so self terminating
httpResponse = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
httpResponse.headers().add(HttpHeaders.Names.TRANSFER_ENCODING, "gzip");
httpResponse.headers().add(HttpHeaders.Names.TRANSFER_ENCODING, "deflate,chunked");
isResponseSelfTerminating = ProxyUtils.isResponseSelfTerminating(httpResponse);
assertEquals(true, isResponseSelfTerminating);
// #3: 3.If a Content-Length header field (section 14.13) is present, its decimal value in
// OCTETs represents both the entity-length and the transfer-length.
httpResponse = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
httpResponse.headers().add(HttpHeaders.Names.CONTENT_LENGTH, "15");
isResponseSelfTerminating = ProxyUtils.isResponseSelfTerminating(httpResponse);
assertEquals(true, isResponseSelfTerminating);
// continuing #3: If a message is received with both a Transfer-Encoding header field and a
// Content-Length header field, the latter MUST be ignored.
// chunked is last Transfer-Encoding, so message is self-terminating
httpResponse = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
httpResponse.headers().add(HttpHeaders.Names.TRANSFER_ENCODING, "gzip, chunked");
httpResponse.headers().add(HttpHeaders.Names.CONTENT_LENGTH, "15");
isResponseSelfTerminating = ProxyUtils.isResponseSelfTerminating(httpResponse);
assertEquals(true, isResponseSelfTerminating);
// chunked is not last Transfer-Encoding, so message is not self-terminating, since
// Content-Length is ignored
httpResponse = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
httpResponse.headers().add(HttpHeaders.Names.TRANSFER_ENCODING, "gzip");
httpResponse.headers().add(HttpHeaders.Names.CONTENT_LENGTH, "15");
isResponseSelfTerminating = ProxyUtils.isResponseSelfTerminating(httpResponse);
assertEquals(false, isResponseSelfTerminating);
// without any of the above conditions, the message should not be self-terminating
// (multipart/byteranges is ignored, see note in method javadoc)
httpResponse = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
isResponseSelfTerminating = ProxyUtils.isResponseSelfTerminating(httpResponse);
assertEquals(false, isResponseSelfTerminating);
}
