if (request == null) {
throw new IllegalArgumentException("HTTP request may not be null");
}
if (context == null) {
throw new IllegalArgumentException("HTTP context may not be null");
}
if (request.containsHeader(AUTH.WWW_AUTH_RESP)) {
return;
}
// Obtain authentication state
AuthState authState = (AuthState) context.getAttribute(
ClientContext.TARGET_AUTH_STATE);
if (authState == null) {
return;
}
AuthScheme authScheme = authState.getAuthScheme();
if (authScheme == null) {
return;
}
Credentials creds = authState.getCredentials();
if (creds == null) {
this.log.debug("User credentials not available");
return;
}
if (authState.getAuthScope() != null || !authScheme.isConnectionBased()) {
try {
request.addHeader(authScheme.authenticate(creds, request));
} catch (AuthenticationException ex) {
if (this.log.isErrorEnabled()) {
this.log.error("Authentication error: " + ex.getMessage());
}
}
}
