make stream url configurable

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 All notable changes to the LaunchDarkly iOS SDK will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org).
 
+## [2.6.1] - 2017-09-21
+### Added
+-`streamUrl` property on `LDConfig` to allow customizing the Server Sent Events engine in streaming mode.
+
 ## [2.6.0] - 2017-08-25
 ### Added
 - `doubleVariation` method for `double` value feature flags, as an alternative to `numberVariation`. Thanks @atlassian-gaustin!

Darkly/DarklyConstants.m

@@ -4,7 +4,7 @@
 
 #import "DarklyConstants.h"
 
-NSString * const kClientVersion = @"2.6.0";
+NSString * const kClientVersion = @"2.6.1";
 NSString * const kBaseUrl = @"https://app.launchdarkly.com";
 NSString * const kEventsUrl = @"https://mobile.launchdarkly.com";
 NSString * const kStreamUrl = @"https://clientstream.launchdarkly.com/mping";

Darkly/LDClientManager.m

@@ -116,7 +116,7 @@ - (void)configureEventSource {
             DEBUG_LOGX(@"ClientManager aborting event source creation - event source running");
             return;
         }
-        eventSource = [LDEventSource eventSourceWithURL:[NSURL URLWithString:kStreamUrl] httpHeaders:[self httpHeadersForEventSource]];
+        eventSource = [LDEventSource eventSourceWithURL:[NSURL URLWithString:[LDClient sharedInstance].ldConfig.streamUrl] httpHeaders:[self httpHeadersForEventSource]];
 
         [eventSource onMessage:^(LDEvent *event) {
             if (![event.event isEqualToString:@"ping"]) { return; }

Darkly/LDConfig.h

@@ -23,6 +23,12 @@
  */
 @property (nonatomic, copy, nullable) NSString* eventsUrl;
 
+/**
+ The event source stream URL to the LaunchDarkly event source, should you need to override
+ the default.
+ */
+@property (nonatomic, copy, nullable) NSString* streamUrl;
+
 /**
  The capacity for storing feature flag and custom events. Events
  are persisted on the client and then sent to the server on a regular

Darkly/LDConfig.m

@@ -25,6 +25,7 @@ - (instancetype)initWithMobileKey:(NSString *)mobileKey {
     self.backgroundFetchInterval = [NSNumber numberWithInt:kDefaultBackgroundFetchInterval];
     self.baseUrl = kBaseUrl;
     self.eventsUrl = kEventsUrl;
+    self.streamUrl = kStreamUrl;
 
     return self;
 }

DarklyTests/LDConfigTest.m

@@ -59,6 +59,14 @@ - (void)testConfigOverrideBaseUrl {
     XCTAssertFalse([config debugEnabled]);
 }
 
+- (void)testConfigOverrideStreamUrl {
+    NSString *dummyStreamUrl = @"https://clientstream.launchdarkly.com/dummySSEUrl";
+    LDConfig *config = [[LDConfig alloc] initWithMobileKey:@"testMobileKey"];
+    XCTAssertEqual(config.streamUrl, kStreamUrl);
+    config.streamUrl = dummyStreamUrl;
+    XCTAssertEqual(config.streamUrl, dummyStreamUrl);
+}
+
 - (void)testConfigOverrideCapacity {
     NSString *testMobileKey = @"testMobileKey";
     int testCapacity = 20;

LaunchDarkly.podspec

@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
 
   s.name         = "LaunchDarkly"
-  s.version      = "2.6.0"
+  s.version      = "2.6.1"
   s.summary      = "iOS SDK for LaunchDarkly"
 
   s.description  = <<-DESC
@@ -23,7 +23,7 @@ Pod::Spec.new do |s|
   s.tvos.deployment_target    = "9.0"
   s.osx.deployment_target     = '10.10'
 
-  s.source       = { :git => "https://github.com/launchdarkly/ios-client.git", :tag => "2.6.0" }
+  s.source       = { :git => "https://github.com/launchdarkly/ios-client.git", :tag => "2.6.1" }
 
   s.source_files  = "Darkly/*.{h,m}"