Increase parallel connection limit for iOS (#1597)

diachenko-mischa · web-flow · commit 0b82ba1fa784 · 2025-03-25T12:48:33.000+02:00
Default number of parallel connection per host
is 6 for hardware iOS device. This limits the
speed of network stages of map download
and map update.
Increase this limit to 32 connections.

Relates-To: HERESDK-5947

Signed-off-by: Mykhailo Diachenko &lt;ext-mykhailo.z.diachenko@here.com&gt;
diff --git a/olp-cpp-sdk-core/src/http/ios/OLPHttpClient.mm b/olp-cpp-sdk-core/src/http/ios/OLPHttpClient.mm
@@ -31,6 +31,7 @@
 
 namespace {
 constexpr auto kLogTag = "OLPHttpClient";
+constexpr auto kMaximumConnectionPerHost = 32;
 
 using SessionId = std::uint64_t;
 static SessionId sessionIdCounter_ = std::numeric_limits<SessionId>::min() + 1;
@@ -673,6 +674,8 @@ - (NSURLSession*)urlSessionWithProxy:(NSDictionary*)proxyDict
     config = [NSURLSessionConfiguration ephemeralSessionConfiguration];
   }
 
+  config.HTTPMaximumConnectionsPerHost = kMaximumConnectionPerHost;
+
   if (proxyDict) {
     config.connectionProxyDictionary = proxyDict;
   }

Original file line number	Diff line number	Diff line change
`@@ -31,6 +31,7 @@`
`31`	`31`
`32`	`32`	`namespace {`
`33`	`33`	`constexpr auto kLogTag = "OLPHttpClient";`
	`34`	`+constexpr auto kMaximumConnectionPerHost = 32;`
`34`	`35`
`35`	`36`	`using SessionId = std::uint64_t;`
`36`	`37`	`static SessionId sessionIdCounter_ = std::numeric_limits<SessionId>::min() + 1;`
`@@ -673,6 +674,8 @@ - (NSURLSession)urlSessionWithProxy:(NSDictionary)proxyDict`
`673`	`674`	`config = [NSURLSessionConfiguration ephemeralSessionConfiguration];`
`674`	`675`	`}`
`675`	`676`
	`677`	`+ config.HTTPMaximumConnectionsPerHost = kMaximumConnectionPerHost;`
	`678`	`+`
`676`	`679`	`if (proxyDict) {`
`677`	`680`	`config.connectionProxyDictionary = proxyDict;`
`678`	`681`	`}`