use dispatch_barrier_sync for header changes

tmm1 · Mar 3, 2017 · 32760e7 · 32760e7
1 parent 4f3c694
commit 32760e7
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/AFNetworking/AFURLRequestSerialization.m b/AFNetworking/AFURLRequestSerialization.m
@@ -312,7 +312,7 @@ - (NSDictionary *)HTTPRequestHeaders {
 - (void)setValue:(NSString *)value
 forHTTPHeaderField:(NSString *)field
 {
-    dispatch_barrier_async(self.requestHeaderModificationQueue, ^{
+    dispatch_barrier_sync(self.requestHeaderModificationQueue, ^{
         [self.mutableHTTPRequestHeaders setValue:value forKey:field];
     });
 }