public String authenticate()

in client/src/main/java/org/apache/ahc/auth/NTLMScheme.java [173:207]
33 lines of code
5 McCabe index (conditional complexity)

    public String authenticate(Credentials credentials, HttpRequestMessage request)
        throws AuthenticationException {
        LOG.trace("enter NTLMScheme.authenticate(Credentials, HttpMethod)");

        if (this.state == UNINITIATED) {
            throw new IllegalStateException("NTLM authentication process has not been initiated");
        }

        NTCredentials ntcredentials = null;
        try {
            ntcredentials = (NTCredentials)credentials;
        } catch (ClassCastException e) {
            throw new InvalidCredentialsException(
                "Credentials cannot be used for NTLM authentication: "
                    + credentials.getClass().getName());
        }
        NTLM ntlm = new NTLM();
        ntlm.setCredentialCharset(request.getCredentialCharset());
        String response = null;
        if (this.state == INITIATED || this.state == FAILED) {
            response = ntlm.getType1Message(
                ntcredentials.getHost(),
                ntcredentials.getDomain());
            this.state = TYPE1_MSG_GENERATED;
        } else {
            response = ntlm.getType3Message(
                ntcredentials.getUserName(),
                ntcredentials.getPassword(),
                ntcredentials.getHost(),
                ntcredentials.getDomain(),
                ntlm.parseType2Message(this.ntlmchallenge));
            this.state = TYPE3_MSG_GENERATED;
        }
        return "NTLM " + response;
    }