added definitions for sending and receiving messages

src/server/responses/SendMessage.c

@@ -0,0 +1,23 @@
+#include "responses.h"
+
+#define LOGGER conn->server->logger
+#define LOG_FUNC conn->server->log_func
+
+declare_RequestHandler(SendMessage)
+{
+    Deferral(4);
+    logInfo(log_ctx, "requested %s", req_type_name);
+    
+    // receive request
+    SendMessageRequest req;
+    try_void(PacketHeader_validateContentSize(req_head, sizeof(req)));
+    try_void(EncryptedSocketTCP_recvStruct(&conn->sock, &req));
+
+    // send response
+    SendMessageResponse res;
+    SendMessageResponse_construct(&res, res_head, );
+    try_void(EncryptedSocketTCP_sendStruct(&conn->sock, res_head));
+    try_void(EncryptedSocketTCP_sendStruct(&conn->sock, &res));
+
+    Return RESULT_VOID;
+}