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Remove all null values for request headers 

Summary:
NSMutableURLRequest appears to be running `[headerValue count]` on every value of the NSDictionary that `allHTTPHeaderFields` is set to, meaning that any `null` values passed to headers in an XHR throw an exception.  This differs from the implementation of XHR in browsers, which just ignore any `null` values for headers.

PR doesn't currently include tests, happy to add those if this is something you'd consider merging
Closes https://github.com/facebook/react-native/pull/6903

Differential Revision: D3256727

fb-gh-sync-id: 58e8db9c86a1fe7fbd95cba7dcf916957d179e0c
fbshipit-source-id: 58e8db9c86a1fe7fbd95cba7dcf916957d179e0c
This commit is contained in:
Griffin Smith 2016-05-03 23:41:26 -07:00 committed by Facebook Github Bot 8
parent 9ca8c09d62
commit 5723915eaa
1 changed files with 14 additions and 1 deletions
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15
Libraries/Network/RCTNetworking.m
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@ -190,6 +190,19 @@ RCT_EXPORT_MODULE()
return nil;
}
- (NSDictionary<NSString *, id> *)stripNullsInRequestHeaders:(NSDictionary<NSString *, id> *)headers
{
NSMutableDictionary *result = [NSMutableDictionary dictionaryWithCapacity:headers.count];
for (NSString *key in headers.allKeys) {
id val = headers[key];
if (val != [NSNull null]) {
result[key] = val;
}
}
return result;
}
- (RCTURLRequestCancellationBlock)buildRequest:(NSDictionary<NSString *, id> *)query
completionBlock:(void (^)(NSURLRequest *request))block
{
@ -198,7 +211,7 @@ RCT_EXPORT_MODULE()
NSURL *URL = [RCTConvert NSURL:query[@"url"]]; // this is marked as nullable in JS, but should not be null
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL];
request.HTTPMethod = [RCTConvert NSString:RCTNilIfNull(query[@"method"])].uppercaseString ?: @"GET";
request.allHTTPHeaderFields = [RCTConvert NSDictionary:query[@"headers"]];
request.allHTTPHeaderFields = [self stripNullsInRequestHeaders:[RCTConvert NSDictionary:query[@"headers"]]];
request.timeoutInterval = [RCTConvert NSTimeInterval:query[@"timeout"]];
NSDictionary<NSString *, id> *data = [RCTConvert NSDictionary:RCTNilIfNull(query[@"data"])];
return [self processDataForHTTPQuery:data callback:^(NSError *error, NSDictionary<NSString *, id> *result) {