minimal fix for segfault

webserv/client/Client.cpp

@@ -1,4 +1,5 @@
 #include "webserv/handler/CgiHandler.hpp"
+#include "webserv/handler/ErrorHandler.hpp"
 #include "webserv/socket/ASocket.hpp"
 #include "webserv/socket/CgiSocket.hpp"
 
@@ -86,9 +87,16 @@ void Client::request()
                   });
         // server_.responseReady(client_socket_->getFd());
         handler_ = router_->handleRequest();
+        if (handler_ != nullptr)
+        {
             handler_->handle();
         }
         else
+        {
+          ErrorHandler::createErrorResponse(500, *httpResponse_);  
+        }
+    }
+    else
     {
         Log::debug("Received partial request",
                    {
@@ -119,7 +127,7 @@ void Client::removeCgiSocket(CgiSocket *cgiSocket)
 
 void Client::poll() const
 {
-    auto * cgiHandler = dynamic_cast<CgiHandler *>(handler_.get());
+    auto *cgiHandler = dynamic_cast<CgiHandler *>(handler_.get());
     if (cgiHandler != nullptr)
     {
         Log::debug("Polling CGI handler for client, fd: " + std::to_string(clientSocket_->getFd()));
@@ -132,7 +140,6 @@ void Client::poll() const
         clientSocket_->setCallback([this]() { respond(); });
         server_.writable(clientSocket_->getFd());
     }
-
 }
 
 void Client::respond() const

webserv/http/HttpRequest.cpp

@@ -1,4 +1,5 @@
 #include "webserv/config/ConfigManager.hpp"
+#include "webserv/config/ServerConfig.hpp"
 #include "webserv/handler/URI.hpp"
 
 #include <webserv/client/Client.hpp>      // for Client
@@ -33,9 +34,17 @@ void HttpRequest::setState(State state)
 {
     if (state == State::Complete)
     {
-        //TODO: segfault if server does not exist
+        // TODO: segfault if server does not exist
+        std::string hostHeader = getHeaders().getHost().value_or("");
+        ServerConfig *serverConfig = ConfigManager::getInstance().getMatchingServerConfig(hostHeader);
+        if (hostHeader.empty() || serverConfig == nullptr)
+        {
+            Log::error("No matching server config found for host: " + hostHeader);
+            state_ = State::ParseError;
+            return;
+        }
         uri_ = std::make_unique<URI>(
-            *this, *ConfigManager::getInstance().getMatchingServerConfig(getHeaders().getHost().value_or("")));   
+            *this, *serverConfig);
     }
     state_ = state;
 }
@@ -93,9 +102,7 @@ void HttpRequest::parseBuffer()
             case State::Complete:
                 Log::debug("HttpRequest::parseBuffer() request is complete");
                 return; // Request is complete
-            case State::ParseError:
+            case State::ParseError: Log::warning("Parse error occurred, stopping further processing"); return;
-                Log::warning("Parse error occurred, stopping further processing");
-                return;
             }
         }
         catch (...)

webserv/router/Router.cpp

@@ -38,6 +38,12 @@ std::unique_ptr<AHandler> Router::handleRequest()
     Log::trace(LOCATION);
 
     HttpRequest &request = client_->getHttpRequest();
+    if (request.getState() == HttpRequest::State::ParseError)
+    {
+        Log::error("Router::handleRequest() called with incomplete request");
+        
+        return nullptr;
+    }
     HttpResponse &response = client_->getHttpResponse();
 
     const std::string &target = request.getTarget();