Rename requestMetadata -> requestHeaders

src/objective-c/GRPCClient/GRPCCall+OAuth2.m

@@ -40,7 +40,7 @@ static NSString * const kChallengeHeader = @"www-authenticate";
 @implementation GRPCCall (OAuth2)
 
 - (NSString *)oauth2AccessToken {
-  NSString *headerValue = self.requestMetadata[kAuthorizationHeader];
+  NSString *headerValue = self.requestHeaders[kAuthorizationHeader];
   if ([headerValue hasPrefix:kBearerPrefix]) {
     return [headerValue substringFromIndex:kBearerPrefix.length];
   } else {
@@ -50,9 +50,9 @@ static NSString * const kChallengeHeader = @"www-authenticate";
 
 - (void)setOauth2AccessToken:(NSString *)token {
   if (token) {
-    self.requestMetadata[kAuthorizationHeader] = [kBearerPrefix stringByAppendingString:token];
+    self.requestHeaders[kAuthorizationHeader] = [kBearerPrefix stringByAppendingString:token];
   } else {
-    [self.requestMetadata removeObjectForKey:kAuthorizationHeader];
+    [self.requestHeaders removeObjectForKey:kAuthorizationHeader];
   }
 }
 

src/objective-c/GRPCClient/GRPCCall.h

@@ -68,8 +68,8 @@ extern id const kGRPCStatusMetadataKey;
 //
 // For convenience, the property is initialized to an empty NSMutableDictionary, and the setter
 // accepts (and copies) both mutable and immutable dictionaries.
-- (NSMutableDictionary *)requestMetadata; // nonatomic
-- (void)setRequestMetadata:(NSDictionary *)requestMetadata; // nonatomic, copy
+- (NSMutableDictionary *)requestHeaders; // nonatomic
+- (void)setRequestHeaders:(NSDictionary *)requestHeaders; // nonatomic, copy
 
 // This dictionary is populated with the HTTP headers received from the server. When the RPC ends,
 // the HTTP trailers received are added to the dictionary too. It has the same structure as the

src/objective-c/GRPCClient/GRPCCall.m

@@ -89,7 +89,7 @@ NSString * const kGRPCStatusMetadataKey = @"io.grpc.StatusMetadataKey";
   // the response arrives.
   GRPCCall *_retainSelf;
 
-  NSMutableDictionary *_requestMetadata;
+  NSMutableDictionary *_requestHeaders;
   NSMutableDictionary *_responseMetadata;
 }
 
@@ -121,7 +121,7 @@ NSString * const kGRPCStatusMetadataKey = @"io.grpc.StatusMetadataKey";
 
     _requestWriter = requestWriter;
 
-    _requestMetadata = [NSMutableDictionary dictionary];
+    _requestHeaders = [NSMutableDictionary dictionary];
     _responseMetadata = [NSMutableDictionary dictionary];
   }
   return self;
@@ -129,12 +129,12 @@ NSString * const kGRPCStatusMetadataKey = @"io.grpc.StatusMetadataKey";
 
 #pragma mark Metadata
 
-- (NSMutableDictionary *)requestMetadata {
-  return _requestMetadata;
+- (NSMutableDictionary *)requestHeaders {
+  return _requestHeaders;
 }
 
-- (void)setRequestMetadata:(NSDictionary *)requestMetadata {
-  _requestMetadata = [NSMutableDictionary dictionaryWithDictionary:requestMetadata];
+- (void)setRequestHeaders:(NSDictionary *)requestHeaders {
+  _requestHeaders = [NSMutableDictionary dictionaryWithDictionary:requestHeaders];
 }
 
 - (NSDictionary *)responseMetadata {
@@ -356,7 +356,7 @@ NSString * const kGRPCStatusMetadataKey = @"io.grpc.StatusMetadataKey";
   _retainSelf = self;
 
   _responseWriteable = [[GRXConcurrentWriteable alloc] initWithWriteable:writeable];
-  [self sendHeaders:_requestMetadata];
+  [self sendHeaders:_requestHeaders];
   [self invokeCall];
 }