diff --git a/SVHTTPRequest/SVHTTPClient.h b/SVHTTPRequest/SVHTTPClient.h
index 1f397f9..21437f5 100644
--- a/SVHTTPRequest/SVHTTPClient.h
+++ b/SVHTTPRequest/SVHTTPClient.h
@@ -46,4 +46,7 @@ typedef void (^SVHTTPRequestCompletionHandler)(id response, NSHTTPURLResponse *u
 @property (nonatomic, readwrite) NSURLRequestCachePolicy cachePolicy;
 @property (nonatomic, readwrite) NSUInteger timeoutInterval;
 
+@property (nonatomic, readwrite) NSDictionary *headers;
+@property (nonatomic, readwrite) BOOL dismissNSURLAuthenticationMethodServerTrust;
+
 @end
diff --git a/SVHTTPRequest/SVHTTPClient.m b/SVHTTPRequest/SVHTTPClient.m
index c4b9e87..6663ed6 100644
--- a/SVHTTPRequest/SVHTTPClient.m
+++ b/SVHTTPRequest/SVHTTPClient.m
@@ -153,7 +153,9 @@ - (SVHTTPRequest*)queueRequest:(NSString*)path
     requestOperation.cachePolicy = self.cachePolicy;
     requestOperation.userAgent = self.userAgent;
     requestOperation.timeoutInterval = self.timeoutInterval;
-    
+    requestOperation.headers = self.headers;
+    requestOperation.dismissNSURLAuthenticationMethodServerTrust=_dismissNSURLAuthenticationMethodServerTrust;
+
     [(id<SVHTTPRequestPrivateMethods>)requestOperation setClient:self];
     
     [self.HTTPHeaderFields enumerateKeysAndObjectsUsingBlock:^(NSString *field, NSString *value, BOOL *stop) {
diff --git a/SVHTTPRequest/SVHTTPRequest.h b/SVHTTPRequest/SVHTTPRequest.h
index afe2a6b..07b8c9a 100644
--- a/SVHTTPRequest/SVHTTPRequest.h
+++ b/SVHTTPRequest/SVHTTPRequest.h
@@ -47,6 +47,8 @@ typedef NSUInteger SVHTTPRequestMethod;
 @property (nonatomic, readwrite) BOOL sendParametersAsJSON;
 @property (nonatomic, readwrite) NSURLRequestCachePolicy cachePolicy;
 @property (nonatomic, readwrite) NSUInteger timeoutInterval;
+@property (nonatomic, readwrite) NSDictionary *headers;
+@property (nonatomic, readwrite) BOOL dismissNSURLAuthenticationMethodServerTrust;
 
 @end
 
diff --git a/SVHTTPRequest/SVHTTPRequest.m b/SVHTTPRequest/SVHTTPRequest.m
index 54ca010..ffe540b 100644
--- a/SVHTTPRequest/SVHTTPRequest.m
+++ b/SVHTTPRequest/SVHTTPRequest.m
@@ -31,7 +31,7 @@ - (NSString*)encodedURLParameterString;
 
 static NSInteger SVHTTPRequestTaskCount = 0;
 static NSString *defaultUserAgent;
-static NSTimeInterval SVHTTPRequestTimeoutInterval = 20;
+static NSTimeInterval SVHTTPRequestTimeoutInterval = 100;
 
 @interface SVHTTPRequest ()
 
@@ -367,6 +367,10 @@ - (void)start {
         [self increaseSVHTTPRequestTaskCount];
     });
     
+    if (self.headers) {
+        [self.operationRequest setAllHTTPHeaderFields:self.headers];
+    }
+    
     if(self.operationParameters)
         [self addParametersToRequest:self.operationParameters];
     
@@ -491,6 +495,20 @@ - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLRespon
     self.operationURLResponse = (NSHTTPURLResponse*)response;
 }
 
+- (void)connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
+{
+    if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) {
+        if (_dismissNSURLAuthenticationMethodServerTrust) {
+            NSURLProtectionSpace * protectionSpace = [challenge protectionSpace];
+            NSURLCredential* credentail = [NSURLCredential credentialForTrust:[protectionSpace serverTrust]];
+            [[challenge sender] useCredential:credentail forAuthenticationChallenge:challenge];
+        }
+        else {
+            [[challenge sender] continueWithoutCredentialForAuthenticationChallenge:challenge];
+        }
+    }
+}
+
 - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
     dispatch_group_async(self.saveDataDispatchGroup, self.saveDataDispatchQueue, ^{
         if(self.operationSavePath) {