Fix the issue of not being able to configure only server name in the secureSocket config

ballerina-tests/http-security-tests/tests/ssl_disable_ssl_test.bal

@@ -61,19 +61,3 @@ public function testSslDisabledClient1() returns error? {
         test:assertFail(msg = "Found unexpected output: " + resp.message());
     }
 }
-
-http:ClientConfiguration disableSslClientConf2 = {
-    secureSocket: {
-    }
-};
-
-@test:Config {}
-public function testSslDisabledClient2() {
-    http:Client|error httpClient = new ("https://localhost:9238", disableSslClientConf2);
-    string expectedErrMsg = "Need to configure cert with client SSL certificates file";
-    if (httpClient is error) {
-        test:assertEquals(httpClient.message(), expectedErrMsg);
-    } else {
-        test:assertFail(msg = "Expected mutual SSL error not found");
-    }
-}

ballerina-tests/http-security-tests/tests/ssl_sni_host_name_test.bal

@@ -76,6 +76,12 @@ http:ClientConfiguration http1SniClientConf2 = {
     }
 };
 
+http:ClientConfiguration http2SniClientConf3 = {
+    secureSocket: {
+        serverName: "localhost"
+    }
+};
+
 @test:Config {}
 public function testHttp2WithSni() returns error? {
     http:Client clientEP = check new ("https://127.0.0.1:9207", http2SniClientConf);
@@ -100,3 +106,25 @@ public function testSniFailure() returns error? {
         test:assertFail("Test `testSniFailure` is expecting an error. But received a success response");
     }
 }
+
+@test:Config {}
+public function testSniWhenUsingDefaultCerts() returns error? {
+    http:Client httpClient = check new("https://www.google.com", http2SniClientConf3);
+    string|error resp = httpClient->get("/");
+    // This response is success because even though we send a wrong server name, google.com sends the default cert which
+    // is valid and trusted by the client.
+    if resp is error {
+        test:assertFail("Found unexpected output: " +  resp.message());
+    }
+}
+
+@test:Config {}
+public function testSniFailureWhenUsingDefaultCerts() returns error? {
+    http:Client clientEP = check new ("https://127.0.0.1:9208", http2SniClientConf3);
+    string|error resp = clientEP->get("/http1SniService/");
+    if resp is error {
+        common:assertTrueTextPayload(resp.message(), "SSL connection failed:javax.net.ssl.SSLHandshakeException:");
+    } else {
+        test:assertFail("Test `testSniFailureWhenUsingDefaultCerts` is expecting an error. But received a success response");
+    }
+}

changelog.md

@@ -6,7 +6,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
-- [Add support for configuring server name to be used in the SSL SNI extension](https://github.com/ballerina-platform/ballerina-library/issues/7435)
 
 ### Added
 
@@ -18,12 +17,14 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - [Migrate client and service data binding lang utils usage into data.jsondata module utils `toJson` and `parserAsType`](https://github.com/ballerina-platform/ballerina-library/issues/6747)
 - [Add static code rules](https://github.com/ballerina-platform/ballerina-library/issues/7283)
 - [Add relax data binding support for service and client data binding](https://github.com/ballerina-platform/ballerina-library/issues/7366)
+- [Add support for configuring server name to be used in the SSL SNI extension](https://github.com/ballerina-platform/ballerina-library/issues/7435)
 
 ### Fixed
 
 - [Address CVE-2024-7254 vulnerability](https://github.com/ballerina-platform/ballerina-library/issues/7013)
 - [Fix duplicating `Content-Type` header via the `addHeader` method](https://github.com/ballerina-platform/ballerina-library/issues/7268)
 - [Update netty version](https://github.com/ballerina-platform/ballerina-library/issues/7358)
+- [Fix the issue of not being able to configure only server name in the secureSocket config](https://github.com/ballerina-platform/ballerina-library/issues/7443)
 
 ## [2.12.0] - 2024-08-20
 

native/src/main/java/io/ballerina/stdlib/http/api/HttpUtil.java

@@ -1409,13 +1409,7 @@ public static void populateSSLConfiguration(SslConfiguration senderConfiguration
         }
         Object cert = secureSocket.get(HttpConstants.SECURESOCKET_CONFIG_CERT);
         if (cert == null) {
-            BMap<BString, Object> key = getBMapValueIfPresent(secureSocket, HttpConstants.SECURESOCKET_CONFIG_KEY);
-            if (key != null) {
-                senderConfiguration.useJavaDefaults();
-            } else {
-                throw createHttpError("Need to configure cert with client SSL certificates file",
-                        HttpErrorType.SSL_ERROR);
-            }
+            senderConfiguration.useJavaDefaults();
         } else {
             evaluateCertField(cert, senderConfiguration);
         }

native/src/main/java/io/ballerina/stdlib/http/transport/contract/config/SslConfiguration.java

@@ -245,6 +245,7 @@ private SSLConfig getSSLConfigForListener() {
     }
 
     private SSLConfig getSSLConfigForSender() {
+        setSslParameters();
         if (sslConfig.isDisableSsl() || sslConfig.useJavaDefaults()) {
             return sslConfig;
         }
@@ -265,7 +266,10 @@ private SSLConfig getSSLConfigForSender() {
         sslConfig.setSSLProtocol(sslProtocol);
         String tlsStoreType = sslConfig.getTLSStoreType() != null ? sslConfig.getTLSStoreType() : JKS;
         sslConfig.setTLSStoreType(tlsStoreType);
+        return sslConfig;
+    }
 
+    private void setSslParameters() {
         if (parameters != null) {
             for (Parameter parameter : parameters) {
                 switch (parameter.getName()) {
@@ -287,6 +291,5 @@ private SSLConfig getSSLConfigForSender() {
                 }
             }
         }
-        return sslConfig;
     }
 }