// Excerpts from @lsegal - https://github.com/aws/aws-sdk-js/issues/659#issuecomment-120477258
//
//	User-Agent:
//
//	    This is ignored from signing because signing this causes problems with generating pre-signed URLs
//	    (that are executed by other agents) or when customers pass requests through proxies, which may
//	    modify the user-agent.
//
//	Authorization:
//
//	    Is skipped for obvious reasons

                    System.arraycopy(sk, 0, key, 0, Math.min(16, sk.length));
                    this.sessionKey = key;
                }

                boolean signed = response != null && response.isSigned();
                if (!anonymous && (isSignatureSetupRequired() || signed)) {
                    byte[] signingKey = ctx.getSigningKey();
                    if (signingKey != null && response != null) {

				"multipart/example",
				"multipart/form-data",
				"multipart/header-set",
				"multipart/mixed",
				"multipart/parallel",
				"multipart/related",
				"multipart/report",
				"multipart/signed",
				"multipart/voice-message",
				"text/x-actionscript",
				"text/x-ada",
				"text/x-applescript",
				"text/asp",
				"text/aspdotnet",
				"text/x-aspectj",
				"text/x-assembly",

		Description:    "Your key is too long",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrUnsignedHeaders: {
		Code:           "AccessDenied",
		Description:    "There were headers present in the request which were not signed",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrInvalidQueryParams: {
		Code:           "AuthorizationQueryParametersError",

    when no certificates were pinned. This avoids an SSL failure in insecure
    “trust everyone” configurations, such as when talking to a development
    HTTPS server that has a self-signed certificate.


## Version 3.1.1

_2016-02-07_

 *  Fix: Don't crash when finding the trust manager if the Play Services (GMS)
    security provider is installed.