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diff --git a/src/backend/anastasis-httpd.h b/src/backend/anastasis-httpd.h
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+/*
+  This file is part of TALER
+  Copyright (C) 2019 Taler Systems SA
+
+  TALER is free software; you can redistribute it and/or modify it under the
+  terms of the GNU General Public License as published by the Free Software
+  Foundation; either version 3, or (at your option) any later version.
+
+  TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License along with
+  TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file anastasis/anastasis-httpd.h
+ * @brief HTTP serving layer
+ * @author Christian Grothoff
+ */
+#ifndef ANASTASIS_HTTPD_H
+#define ANASTASIS_HTTPD_H
+
+#include "platform.h"
+#include "anastasis_database_lib.h"
+#include <microhttpd.h>
+#include <taler/taler_mhd_lib.h>
+#include <gnunet/gnunet_mhd_compat.h>
+
+
+/**
+ * For how many years do we allow users to store truth at most? Also
+ * how long we store things if the cost is zero.
+ */
+#define ANASTASIS_MAX_YEARS_STORAGE 5
+
+
+/**
+ * @brief Struct describing an URL and the handler for it.
+ */
+struct AH_RequestHandler
+{
+
+  /**
+   * URL the handler is for.
+   */
+  const char *url;
+
+  /**
+   * Method the handler is for, NULL for "all".
+   */
+  const char *method;
+
+  /**
+   * Mime type to use in reply (hint, can be NULL).
+   */
+  const char *mime_type;
+
+  /**
+   * Raw data for the @e handler
+   */
+  const void *data;
+
+  /**
+   * Number of bytes in @e data, 0 for 0-terminated.
+   */
+  size_t data_size;
+
+
+  /**
+   * Function to call to handle the request.
+   *
+   * @param rh this struct
+   * @param connection the MHD connection to handle
+   * @return MHD result code
+   */
+  MHD_RESULT (*handler)(struct AH_RequestHandler *rh,
+                        struct MHD_Connection *connection);
+
+  /**
+   * Default response code.
+   */
+  unsigned int response_code;
+};
+
+
+/**
+ * Each MHD response handler that sets the "connection_cls" to a
+ * non-NULL value must use a struct that has this struct as its first
+ * member.  This struct contains a single callback, which will be
+ * invoked to clean up the memory when the contection is completed.
+ */
+struct TM_HandlerContext;
+
+/**
+ * Signature of a function used to clean up the context
+ * we keep in the "connection_cls" of MHD when handling
+ * a request.
+ *
+ * @param hc header of the context to clean up.
+ */
+typedef void
+(*TM_ContextCleanup)(struct TM_HandlerContext *hc);
+
+
+/**
+ * Each MHD response handler that sets the "connection_cls" to a
+ * non-NULL value must use a struct that has this struct as its first
+ * member.  This struct contains a single callback, which will be
+ * invoked to clean up the memory when the connection is completed.
+ */
+struct TM_HandlerContext
+{
+
+  /**
+   * Function to execute the handler-specific cleanup of the
+   * (typically larger) context.
+   */
+  TM_ContextCleanup cc;
+
+  /**
+   * Handler-specific context.
+   */
+  void *ctx;
+
+  /**
+   * Which request handler is handling this request?
+   */
+  const struct AH_RequestHandler *rh;
+
+  /**
+   * Asynchronous request context id.
+   */
+  struct GNUNET_AsyncScopeId async_scope_id;
+};
+
+/**
+ * Handle to the database backend.
+ */
+extern struct ANASTASIS_DatabasePlugin *db;
+
+/**
+ * Upload limit to the service, in megabytes.
+ */
+extern unsigned long long AH_upload_limit_mb;
+
+/**
+ * Annual fee for the backup account.
+ */
+extern struct TALER_Amount AH_annual_fee;
+
+/**
+ * Fee for a truth upload.
+ */
+extern struct TALER_Amount AH_truth_upload_fee;
+
+/**
+ * Amount of insurance.
+ */
+extern struct TALER_Amount AH_insurance;
+
+/**
+ * Cost for secure question truth download.
+ */
+extern struct TALER_Amount AH_question_cost;
+
+/**
+ * Our Taler backend to process payments.
+ */
+extern char *AH_backend_url;
+
+/**
+ * Taler currency.
+ */
+extern char *AH_currency;
+
+/**
+ * Our configuration.
+ */
+extern const struct GNUNET_CONFIGURATION_Handle *AH_cfg;
+
+/**
+ * Number of policy uploads permitted per annual fee payment.
+ */
+extern unsigned long long AH_post_counter;
+
+/**
+ * Our fulfillment URL
+ */
+extern char *AH_fulfillment_url;
+
+/**
+ * Our business name.
+ */
+extern char *AH_business_name;
+
+/**
+ * Our server salt.
+ */
+extern struct ANASTASIS_CRYPTO_ProviderSaltP AH_server_salt;
+
+/**
+ * Our context for making HTTP requests.
+ */
+extern struct GNUNET_CURL_Context *AH_ctx;
+
+
+/**
+ * Kick MHD to run now, to be called after MHD_resume_connection().
+ * Basically, we need to explicitly resume MHD's event loop whenever
+ * we made progress serving a request.  This function re-schedules
+ * the task processing MHD's activities to run immediately.
+ *
+ * @param cls NULL
+ */
+void
+AH_trigger_daemon (void *cls);
+
+/**
+ * Kick GNUnet Curl scheduler to begin curl interactions.
+ */
+void
+AH_trigger_curl (void);
+
+#endif