Added a log directory for UI debugging.

api/src/filters/CorsFilter.cpp

@@ -10,29 +10,29 @@ void CorsFilter::doFilter(const drogon::HttpRequestPtr& req,
                         drogon::FilterChainCallback&& fccb) {
     API_LOG_DEBUG("Processing CORS request for path: {}", req->getPath());
 
-    // Create response for handling CORS
-    auto resp = drogon::HttpResponse::newHttpResponse();
-
-    // Add CORS headers matching your config
-    resp->addHeader("Access-Control-Allow-Origin", "http://localhost:3000");
-    resp->addHeader("Access-Control-Allow-Methods", "GET,POST,OPTIONS");
-    resp->addHeader("Access-Control-Allow-Headers", "Content-Type,Authorization");
-    resp->addHeader("Access-Control-Max-Age", "86400");
-
-    // Handle preflight request
     if (req->getMethodString() == "OPTIONS") {
+        // Handle preflight request
         API_LOG_DEBUG("Handling OPTIONS preflight request");
-        resp->setStatusCode(drogon::k204NoContent);
+        auto resp = drogon::HttpResponse::newHttpResponse();
+
+        // Add CORS headers for preflight
+        resp->addHeader("Access-Control-Allow-Origin", "http://localhost:3000");
+        resp->addHeader("Access-Control-Allow-Methods", "GET, POST, OPTIONS");
+        resp->addHeader("Access-Control-Allow-Headers", "Content-Type");
+        resp->addHeader("Access-Control-Max-Age", "86400");
+
+        // Important: Set status 200 for OPTIONS
+        resp->setStatusCode(drogon::k200OK);
         fcb(resp);
         return;
     }
 
-    // For non-OPTIONS requests, add CORS headers to the response
-    req->addHeader("Access-Control-Allow-Origin", "http://localhost:3000");
-    req->addHeader("Access-Control-Allow-Methods", "GET,POST,OPTIONS");
-    req->addHeader("Access-Control-Allow-Headers", "Content-Type,Authorization");
-    req->addHeader("Access-Control-Max-Age", "86400");
-
+    // For non-OPTIONS requests
+    auto resp = drogon::HttpResponse::newHttpResponse();
+    resp->addHeader("Access-Control-Allow-Origin", "http://localhost:3000");
+    resp->addHeader("Access-Control-Allow-Methods", "GET, POST, OPTIONS");
+    resp->addHeader("Access-Control-Allow-Headers", "Content-Type");
+    
     // Continue with the request chain
     fccb();
 }

logs/api.241215-024616.000000.log

@@ -0,0 +1 @@
+20241215 02:46:16.053108 UTC 10367 WARN  SIGINT signal received. - HttpAppFrameworkImpl.cc:186

logs/api.241215-025018.000000.log

@@ -0,0 +1 @@
+20241215 02:50:18.483464 UTC 10621 WARN  SIGINT signal received. - HttpAppFrameworkImpl.cc:186

logs/api_2024-12-14.log

@@ -3,3 +3,14 @@
 [2024-12-14 20:32:06.597] [API] [info] [10367] Starting Quantitative Finance API server
 [2024-12-14 20:32:06.597] [API] [info] [10367] Server configuration loaded successfully
 [2024-12-14 20:32:06.597] [API] [info] [10367] Starting server on port 8080
+[2024-12-14 21:39:18.125] [API] [info] [10370] Calculating Black-Scholes price with parameters: spot=100, strike=100, r=0.05, t=1, vol=0.2, is_call=true
+[2024-12-14 21:39:18.125] [API] [info] [10370] Black-Scholes calculation completed. Result: 10.450583572185565
+[2024-12-14 21:43:16.955] [API] [info] [10370] Calculating Black-Scholes price with parameters: spot=100, strike=100, r=0.05, t=1, vol=0.2, is_call=true
+[2024-12-14 21:43:16.955] [API] [info] [10370] Black-Scholes calculation completed. Result: 10.450583572185565
+[2024-12-14 21:48:04.982] [API] [info] [10621] Starting Quantitative Finance API server
+[2024-12-14 21:48:04.983] [API] [info] [10621] Server configuration loaded successfully
+[2024-12-14 21:48:04.983] [API] [info] [10621] Starting server on port 8080
+[2024-12-14 21:48:14.305] [API] [info] [10625] Calculating Black-Scholes price with parameters: spot=100, strike=100, r=0.05, t=1, vol=0.2, is_call=true
+[2024-12-14 21:48:14.305] [API] [info] [10625] Black-Scholes calculation completed. Result: 10.450583572185565
+[2024-12-14 21:48:52.611] [API] [info] [10630] Calculating Binomial Tree price with parameters: spot=100, strike=100, r=0.05, t=1, vol=0.2, is_call=true, steps=100
+[2024-12-14 21:48:52.611] [API] [info] [10630] Binomial Tree calculation completed. Result: 10.430611662249113