Updates to epee HTTP client code

  - http_simple_client now uses std::chrono for timeouts
  - http_simple_client accepts timeouts per connect / invoke call
  - shortened names of epee http invoke functions
  - invoke command functions only take relative path, connection
    is not automatically performed

7 files changed, 66 insertions, 80 deletions

diff --git a/src/wallet/api/wallet.cpp b/src/wallet/api/wallet.cpp
index 52ecc2e6a..cd4b523c9 100644
--- a/src/wallet/api/wallet.cpp
+++ b/src/wallet/api/wallet.cpp
@@ -516,12 +516,12 @@ string WalletImpl::keysFilename() const
 bool WalletImpl::init(const std::string &daemon_address, uint64_t upper_transaction_size_limit)
 {
     clearStatus();
-    doInit(daemon_address, upper_transaction_size_limit);
+    if (!doInit(daemon_address, upper_transaction_size_limit))
+        return false;
     bool result = this->refresh();
     // enabling background refresh thread
     startRefresh();
     return result;
-
 }
 
 void WalletImpl::initAsync(const string &daemon_address, uint64_t upper_transaction_size_limit)
@@ -1232,9 +1232,10 @@ bool WalletImpl::isNewWallet() const
     return !(blockChainHeight() > 1 || m_recoveringFromSeed || m_rebuildWalletCache) && !watchOnly();
 }
 
-void WalletImpl::doInit(const string &daemon_address, uint64_t upper_transaction_size_limit)
+bool WalletImpl::doInit(const string &daemon_address, uint64_t upper_transaction_size_limit)
 {
-    m_wallet->init(daemon_address, upper_transaction_size_limit);
+    if (!m_wallet->init(daemon_address, upper_transaction_size_limit))
+       return false;
 
     // in case new wallet, this will force fast-refresh (pulling hashes instead of blocks)
     // If daemon isn't synced a calculated block height will be used instead
@@ -1253,8 +1254,7 @@ void WalletImpl::doInit(const string &daemon_address, uint64_t upper_transaction
         this->setTrustedDaemon(false);
         m_refreshIntervalMillis = DEFAULT_REMOTE_NODE_REFRESH_INTERVAL_MILLIS;
     }
-        
-
+    return true;
 }
 
 bool WalletImpl::parse_uri(const std::string &uri, std::string &address, std::string &payment_id, uint64_t &amount, std::string &tx_description, std::string &recipient_name, std::vector<std::string> &unknown_parameters, std::string &error)
diff --git a/src/wallet/api/wallet.h b/src/wallet/api/wallet.h
index e3df7fd01..844d552c4 100644
--- a/src/wallet/api/wallet.h
+++ b/src/wallet/api/wallet.h
@@ -127,7 +127,7 @@ private:
     bool daemonSynced() const;
     void stopRefresh();
     bool isNewWallet() const;
-    void doInit(const std::string &daemon_address, uint64_t upper_transaction_size_limit);
+    bool doInit(const std::string &daemon_address, uint64_t upper_transaction_size_limit);
 
 
 private:
diff --git a/src/wallet/api/wallet_manager.cpp b/src/wallet/api/wallet_manager.cpp
index 904338a72..0601c104e 100644
--- a/src/wallet/api/wallet_manager.cpp
+++ b/src/wallet/api/wallet_manager.cpp
@@ -43,6 +43,15 @@ namespace epee {
     unsigned int g_test_dbg_lock_sleep = 0;
 }
 
+namespace {
+    template<typename Request, typename Response>
+    bool connect_and_invoke(const std::string& address, const std::string& path, const Request& request, Response& response)
+    {
+        epee::net_utils::http::http_simple_client client{};
+        return client.set_server(address) && epee::net_utils::invoke_http_json(path, request, response, client);
+    }
+}
+
 namespace Monero {
 
 Wallet *WalletManagerImpl::createWallet(const std::string &path, const std::string &password,
@@ -145,9 +154,7 @@ bool WalletManagerImpl::connected(uint32_t *version) const
     req_t.jsonrpc = "2.0";
     req_t.id = epee::serialization::storage_entry(0);
     req_t.method = "get_version";
-    epee::net_utils::http::http_simple_client http_client;
-    bool r = epee::net_utils::invoke_http_json_remote_command2(m_daemonAddress + "/json_rpc", req_t, resp_t, http_client);
-    if (!r)
+    if (!connect_and_invoke(m_daemonAddress, "/json_rpc", req_t, resp_t))
       return false;
 
     if (version)
@@ -193,8 +200,7 @@ bool WalletManagerImpl::checkPayment(const std::string &address_text, const std:
   cryptonote::COMMAND_RPC_GET_TRANSACTIONS::request req;
   cryptonote::COMMAND_RPC_GET_TRANSACTIONS::response res;
   req.txs_hashes.push_back(epee::string_tools::pod_to_hex(txid));
-  epee::net_utils::http::http_simple_client http_client;
-  if (!epee::net_utils::invoke_http_json_remote_command2(daemon_address + "/gettransactions", req, res, http_client) ||
+  if (!connect_and_invoke(m_daemonAddress, "/gettransactions", req, res) ||
       (res.txs.size() != 1 && res.txs_as_hex.size() != 1))
   {
     error = tr("failed to get transaction from daemon");
@@ -312,8 +318,7 @@ uint64_t WalletManagerImpl::blockchainHeight() const
     cryptonote::COMMAND_RPC_GET_INFO::request ireq;
     cryptonote::COMMAND_RPC_GET_INFO::response ires;
 
-    epee::net_utils::http::http_simple_client http_client;
-    if (!epee::net_utils::invoke_http_json_remote_command2(m_daemonAddress + "/getinfo", ireq, ires, http_client))
+    if (!connect_and_invoke(m_daemonAddress, "/getinfo", ireq, ires))
       return 0;
     return ires.height;
 }
@@ -323,8 +328,7 @@ uint64_t WalletManagerImpl::blockchainTargetHeight() const
     cryptonote::COMMAND_RPC_GET_INFO::request ireq;
     cryptonote::COMMAND_RPC_GET_INFO::response ires;
 
-    epee::net_utils::http::http_simple_client http_client;
-    if (!epee::net_utils::invoke_http_json_remote_command2(m_daemonAddress + "/getinfo", ireq, ires, http_client))
+    if (!connect_and_invoke(m_daemonAddress, "/getinfo", ireq, ires))
       return 0;
     return ires.target_height >= ires.height ? ires.target_height : ires.height;
 }
@@ -334,8 +338,7 @@ uint64_t WalletManagerImpl::networkDifficulty() const
     cryptonote::COMMAND_RPC_GET_INFO::request ireq;
     cryptonote::COMMAND_RPC_GET_INFO::response ires;
 
-    epee::net_utils::http::http_simple_client http_client;
-    if (!epee::net_utils::invoke_http_json_remote_command2(m_daemonAddress + "/getinfo", ireq, ires, http_client))
+    if (!connect_and_invoke(m_daemonAddress, "/getinfo", ireq, ires))
       return 0;
     return ires.difficulty;
 }
@@ -346,7 +349,7 @@ double WalletManagerImpl::miningHashRate() const
     cryptonote::COMMAND_RPC_MINING_STATUS::response mres;
 
     epee::net_utils::http::http_simple_client http_client;
-    if (!epee::net_utils::invoke_http_json_remote_command2(m_daemonAddress + "/mining_status", mreq, mres, http_client))
+    if (!connect_and_invoke(m_daemonAddress, "/mining_status", mreq, mres))
       return 0.0;
     if (!mres.active)
       return 0.0;
@@ -366,7 +369,7 @@ void WalletManagerImpl::hardForkInfo(uint8_t &version, uint64_t &earliest_height
     req_t.id = epee::serialization::storage_entry(0);
     req_t.method = "hard_fork_info";
     req_t.params.version = 0;
-    bool r = epee::net_utils::invoke_http_json_remote_command2(m_daemonAddress + "/json_rpc", req_t, resp_t, http_client);
+    bool r = connect_and_invoke(m_daemonAddress, "/json_rpc", req_t, resp_t);
     if (!r || resp_t.result.status != CORE_RPC_STATUS_OK)
         return;
     version = resp_t.result.version;
@@ -378,8 +381,7 @@ uint64_t WalletManagerImpl::blockTarget() const
     cryptonote::COMMAND_RPC_GET_INFO::request ireq;
     cryptonote::COMMAND_RPC_GET_INFO::response ires;
 
-    epee::net_utils::http::http_simple_client http_client;
-    if (!epee::net_utils::invoke_http_json_remote_command2(m_daemonAddress + "/getinfo", ireq, ires, http_client))
+    if (!connect_and_invoke(m_daemonAddress, "/getinfo", ireq, ires))
         return 0;
     return ires.target;
 }
@@ -389,8 +391,7 @@ bool WalletManagerImpl::isMining() const
     cryptonote::COMMAND_RPC_MINING_STATUS::request mreq;
     cryptonote::COMMAND_RPC_MINING_STATUS::response mres;
 
-    epee::net_utils::http::http_simple_client http_client;
-    if (!epee::net_utils::invoke_http_json_remote_command2(m_daemonAddress + "/mining_status", mreq, mres, http_client))
+    if (!connect_and_invoke(m_daemonAddress, "/mining_status", mreq, mres))
       return false;
     return mres.active;
 }
@@ -403,8 +404,7 @@ bool WalletManagerImpl::startMining(const std::string &address, uint32_t threads
     mreq.miner_address = address;
     mreq.threads_count = threads;
 
-    epee::net_utils::http::http_simple_client http_client;
-    if (!epee::net_utils::invoke_http_json_remote_command2(m_daemonAddress + "/start_mining", mreq, mres, http_client))
+    if (!connect_and_invoke(m_daemonAddress, "/start_mining", mreq, mres))
       return false;
     return mres.status == CORE_RPC_STATUS_OK;
 }
@@ -414,8 +414,7 @@ bool WalletManagerImpl::stopMining()
     cryptonote::COMMAND_RPC_STOP_MINING::request mreq;
     cryptonote::COMMAND_RPC_STOP_MINING::response mres;
 
-    epee::net_utils::http::http_simple_client http_client;
-    if (!epee::net_utils::invoke_http_json_remote_command2(m_daemonAddress + "/stop_mining", mreq, mres, http_client))
+    if (!connect_and_invoke(m_daemonAddress, "/stop_mining", mreq, mres))
       return false;
     return mres.status == CORE_RPC_STATUS_OK;
 }
diff --git a/src/wallet/node_rpc_proxy.cpp b/src/wallet/node_rpc_proxy.cpp
index d7f755e36..cc249b5cc 100644
--- a/src/wallet/node_rpc_proxy.cpp
+++ b/src/wallet/node_rpc_proxy.cpp
@@ -36,18 +36,16 @@ using namespace epee;
 namespace tools
 {
 
-void NodeRPCProxy::init(const std::string &daemon_address)
-{
-  m_daemon_address = daemon_address;
-
-  m_height = 0;
-  m_height_time = 0;
-  for (auto &slot: m_earliest_height)
-    slot = 0;
-  m_dynamic_per_kb_fee_estimate = 0;
-  m_dynamic_per_kb_fee_estimate_cached_height = 0;
-  m_dynamic_per_kb_fee_estimate_grace_blocks = 0;
-}
+NodeRPCProxy::NodeRPCProxy(epee::net_utils::http::http_simple_client &http_client, boost::mutex &mutex)
+  : m_http_client(http_client)
+  , m_daemon_rpc_mutex(mutex)
+  , m_height(0)
+  , m_height_time(0)
+  , m_earliest_height()
+  , m_dynamic_per_kb_fee_estimate(0)
+  , m_dynamic_per_kb_fee_estimate_cached_height(0)
+  , m_dynamic_per_kb_fee_estimate_grace_blocks(0)
+{}
 
 boost::optional<std::string> NodeRPCProxy::get_height(uint64_t &height)
 {
@@ -58,7 +56,7 @@ boost::optional<std::string> NodeRPCProxy::get_height(uint64_t &height)
     cryptonote::COMMAND_RPC_GET_HEIGHT::response res = AUTO_VAL_INIT(res);
 
     m_daemon_rpc_mutex.lock();
-    bool r = net_utils::invoke_http_json_remote_command2(m_daemon_address + "/getheight", req, res, m_http_client);
+    bool r = net_utils::invoke_http_json("/getheight", req, res, m_http_client);
     m_daemon_rpc_mutex.unlock();
     CHECK_AND_ASSERT_MES(r, std::string(), "Failed to connect to daemon");
     CHECK_AND_ASSERT_MES(res.status != CORE_RPC_STATUS_BUSY, res.status, "Failed to connect to daemon");
@@ -87,7 +85,7 @@ boost::optional<std::string> NodeRPCProxy::get_earliest_height(uint8_t version,
     req_t.id = epee::serialization::storage_entry(0);
     req_t.method = "hard_fork_info";
     req_t.params.version = version;
-    bool r = net_utils::invoke_http_json_remote_command2(m_daemon_address + "/json_rpc", req_t, resp_t, m_http_client);
+    bool r = net_utils::invoke_http_json("/json_rpc", req_t, resp_t, m_http_client);
     m_daemon_rpc_mutex.unlock();
     CHECK_AND_ASSERT_MES(r, std::string(), "Failed to connect to daemon");
     CHECK_AND_ASSERT_MES(resp_t.result.status != CORE_RPC_STATUS_BUSY, resp_t.result.status, "Failed to connect to daemon");
@@ -117,7 +115,7 @@ boost::optional<std::string> NodeRPCProxy::get_dynamic_per_kb_fee_estimate(uint6
     req_t.id = epee::serialization::storage_entry(0);
     req_t.method = "get_fee_estimate";
     req_t.params.grace_blocks = grace_blocks;
-    bool r = net_utils::invoke_http_json_remote_command2(m_daemon_address + "/json_rpc", req_t, resp_t, m_http_client);
+    bool r = net_utils::invoke_http_json("/json_rpc", req_t, resp_t, m_http_client);
     m_daemon_rpc_mutex.unlock();
     CHECK_AND_ASSERT_MES(r, std::string(), "Failed to connect to daemon");
     CHECK_AND_ASSERT_MES(resp_t.result.status != CORE_RPC_STATUS_BUSY, resp_t.result.status, "Failed to connect to daemon");
diff --git a/src/wallet/node_rpc_proxy.h b/src/wallet/node_rpc_proxy.h
index 1ae716dab..e2f42d541 100644
--- a/src/wallet/node_rpc_proxy.h
+++ b/src/wallet/node_rpc_proxy.h
@@ -39,10 +39,7 @@ namespace tools
 class NodeRPCProxy
 {
 public:
-  NodeRPCProxy(epee::net_utils::http::http_simple_client &http_client, boost::mutex &mutex):
-    m_http_client(http_client), m_daemon_rpc_mutex(mutex) { init(""); }
-
-  void init(const std::string &daemon_address);
+  NodeRPCProxy(epee::net_utils::http::http_simple_client &http_client, boost::mutex &mutex);
 
   boost::optional<std::string> get_height(uint64_t &height);
   void set_height(uint64_t h);
@@ -50,7 +47,6 @@ public:
   boost::optional<std::string> get_dynamic_per_kb_fee_estimate(uint64_t grace_blocks, uint64_t &fee);
 
 private:
-  std::string m_daemon_address;
   epee::net_utils::http::http_simple_client &m_http_client;
   boost::mutex &m_daemon_rpc_mutex;
 
diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp
index 4348b8a62..676f35e26 100644
--- a/src/wallet/wallet2.cpp
+++ b/src/wallet/wallet2.cpp
@@ -164,7 +164,7 @@ std::unique_ptr<tools::wallet2> make_basic(const boost::program_options::variabl
     daemon_address = std::string("http://") + daemon_host + ":" + std::to_string(daemon_port);
 
   std::unique_ptr<tools::wallet2> wallet(new tools::wallet2(testnet, restricted));
-  wallet->init(daemon_address);
+  wallet->init(std::move(daemon_address));
   return wallet;
 }
 
@@ -418,6 +418,7 @@ namespace tools
 // for now, limit to 30 attempts.  TODO: discuss a good number to limit to.
 const size_t MAX_SPLIT_ATTEMPTS = 30;
 
+constexpr const std::chrono::seconds wallet2::rpc_timeout;
 const char* wallet2::tr(const char* str) { return i18n_translate(str, "tools::wallet2"); }
 
 bool wallet2::has_testnet_option(const boost::program_options::variables_map& vm)
@@ -484,11 +485,11 @@ std::pair<std::unique_ptr<wallet2>, password_container> wallet2::make_new(const
 }
 
 //----------------------------------------------------------------------------------------------------
-void wallet2::init(const std::string& daemon_address, uint64_t upper_transaction_size_limit)
+bool wallet2::init(std::string daemon_address, uint64_t upper_transaction_size_limit)
 {
   m_upper_transaction_size_limit = upper_transaction_size_limit;
-  m_daemon_address = daemon_address;
-  m_node_rpc_proxy.init(m_daemon_address);
+  m_daemon_address = std::move(daemon_address);
+  return m_http_client.set_server(get_daemon_address());
 }
 //----------------------------------------------------------------------------------------------------
 bool wallet2::is_deterministic() const
@@ -1169,7 +1170,7 @@ void wallet2::pull_blocks(uint64_t start_height, uint64_t &blocks_start_height,
 
   req.start_height = start_height;
   m_daemon_rpc_mutex.lock();
-  bool r = net_utils::invoke_http_bin_remote_command2(m_daemon_address + "/getblocks.bin", req, res, m_http_client, WALLET_RCP_CONNECTION_TIMEOUT);
+  bool r = net_utils::invoke_http_bin("/getblocks.bin", req, res, m_http_client, rpc_timeout);
   m_daemon_rpc_mutex.unlock();
   THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "getblocks.bin");
   THROW_WALLET_EXCEPTION_IF(res.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "getblocks.bin");
@@ -1191,7 +1192,7 @@ void wallet2::pull_hashes(uint64_t start_height, uint64_t &blocks_start_height,
 
   req.start_height = start_height;
   m_daemon_rpc_mutex.lock();
-  bool r = net_utils::invoke_http_bin_remote_command2(m_daemon_address + "/gethashes.bin", req, res, m_http_client, WALLET_RCP_CONNECTION_TIMEOUT);
+  bool r = net_utils::invoke_http_bin("/gethashes.bin", req, res, m_http_client, rpc_timeout);
   m_daemon_rpc_mutex.unlock();
   THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "gethashes.bin");
   THROW_WALLET_EXCEPTION_IF(res.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "gethashes.bin");
@@ -1353,7 +1354,7 @@ void wallet2::update_pool_state()
   cryptonote::COMMAND_RPC_GET_TRANSACTION_POOL::request req;
   cryptonote::COMMAND_RPC_GET_TRANSACTION_POOL::response res;
   m_daemon_rpc_mutex.lock();
-  bool r = epee::net_utils::invoke_http_json_remote_command2(m_daemon_address + "/get_transaction_pool", req, res, m_http_client, 200000);
+  bool r = epee::net_utils::invoke_http_json("/get_transaction_pool", req, res, m_http_client, rpc_timeout);
   m_daemon_rpc_mutex.unlock();
   THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "get_transaction_pool");
   THROW_WALLET_EXCEPTION_IF(res.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "get_transaction_pool");
@@ -1461,7 +1462,7 @@ void wallet2::update_pool_state()
           req.txs_hashes.push_back(it.id_hash);
           req.decode_as_json = false;
           m_daemon_rpc_mutex.lock();
-          bool r = epee::net_utils::invoke_http_json_remote_command2(m_daemon_address + "/gettransactions", req, res, m_http_client, 200000);
+          bool r = epee::net_utils::invoke_http_json("/gettransactions", req, res, m_http_client, rpc_timeout);
           m_daemon_rpc_mutex.unlock();
           if (r && res.status == CORE_RPC_STATUS_OK)
           {
@@ -2262,15 +2263,7 @@ bool wallet2::check_connection(uint32_t *version, uint32_t timeout)
 
   if(!m_http_client.is_connected())
   {
-    net_utils::http::url_content u;
-    net_utils::parse_url(m_daemon_address, u);
-
-    if(!u.port)
-    {
-      u.port = m_testnet ? config::testnet::RPC_DEFAULT_PORT : config::RPC_DEFAULT_PORT;
-    }
-
-    if (!m_http_client.connect(u.host, std::to_string(u.port), timeout))
+    if (!m_http_client.connect(std::chrono::milliseconds(timeout)))
       return false;
   }
 
@@ -2281,7 +2274,7 @@ bool wallet2::check_connection(uint32_t *version, uint32_t timeout)
     req_t.jsonrpc = "2.0";
     req_t.id = epee::serialization::storage_entry(0);
     req_t.method = "get_version";
-    bool r = net_utils::invoke_http_json_remote_command2(m_daemon_address + "/json_rpc", req_t, resp_t, m_http_client);
+    bool r = net_utils::invoke_http_json("/json_rpc", req_t, resp_t, m_http_client);
     if (!r || resp_t.result.status != CORE_RPC_STATUS_OK)
       *version = 0;
     else
@@ -2602,7 +2595,7 @@ void wallet2::rescan_spent()
   COMMAND_RPC_IS_KEY_IMAGE_SPENT::response daemon_resp = AUTO_VAL_INIT(daemon_resp);
   req.key_images = key_images;
   m_daemon_rpc_mutex.lock();
-  bool r = epee::net_utils::invoke_http_json_remote_command2(m_daemon_address + "/is_key_image_spent", req, daemon_resp, m_http_client, 200000);
+  bool r = epee::net_utils::invoke_http_json("/is_key_image_spent", req, daemon_resp, m_http_client, rpc_timeout);
   m_daemon_rpc_mutex.unlock();
   THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "is_key_image_spent");
   THROW_WALLET_EXCEPTION_IF(daemon_resp.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "is_key_image_spent");
@@ -2976,7 +2969,7 @@ void wallet2::commit_tx(pending_tx& ptx)
   req.do_not_relay = false;
   COMMAND_RPC_SEND_RAW_TX::response daemon_send_resp;
   m_daemon_rpc_mutex.lock();
-  bool r = epee::net_utils::invoke_http_json_remote_command2(m_daemon_address + "/sendrawtransaction", req, daemon_send_resp, m_http_client, 200000);
+  bool r = epee::net_utils::invoke_http_json("/sendrawtransaction", req, daemon_send_resp, m_http_client, rpc_timeout);
   m_daemon_rpc_mutex.unlock();
   THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "sendrawtransaction");
   THROW_WALLET_EXCEPTION_IF(daemon_send_resp.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "sendrawtransaction");
@@ -3437,7 +3430,7 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>>
     req_t.params.amounts.resize(std::distance(req_t.params.amounts.begin(), end));
     req_t.params.unlocked = true;
     req_t.params.recent_cutoff = time(NULL) - RECENT_OUTPUT_ZONE;
-    bool r = net_utils::invoke_http_json_remote_command2(m_daemon_address + "/json_rpc", req_t, resp_t, m_http_client);
+    bool r = net_utils::invoke_http_json("/json_rpc", req_t, resp_t, m_http_client);
     m_daemon_rpc_mutex.unlock();
     THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "transfer_selected");
     THROW_WALLET_EXCEPTION_IF(resp_t.result.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "get_output_histogram");
@@ -3564,7 +3557,7 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>>
 
     // get the keys for those
     m_daemon_rpc_mutex.lock();
-    r = epee::net_utils::invoke_http_bin_remote_command2(m_daemon_address + "/get_outs.bin", req, daemon_resp, m_http_client, 200000);
+    r = epee::net_utils::invoke_http_bin("/get_outs.bin", req, daemon_resp, m_http_client, rpc_timeout);
     m_daemon_rpc_mutex.unlock();
     THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "get_outs.bin");
     THROW_WALLET_EXCEPTION_IF(daemon_resp.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "get_outs.bin");
@@ -4636,7 +4629,7 @@ std::vector<size_t> wallet2::select_available_outputs_from_histogram(uint64_t co
   req_t.params.min_count = count;
   req_t.params.max_count = 0;
   req_t.params.unlocked = unlocked;
-  bool r = net_utils::invoke_http_json_remote_command2(m_daemon_address + "/json_rpc", req_t, resp_t, m_http_client);
+  bool r = net_utils::invoke_http_json("/json_rpc", req_t, resp_t, m_http_client);
   m_daemon_rpc_mutex.unlock();
   THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "select_available_unmixable_outputs");
   THROW_WALLET_EXCEPTION_IF(resp_t.result.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "get_output_histogram");
@@ -4675,7 +4668,7 @@ uint64_t wallet2::get_num_rct_outputs()
   req_t.params.amounts.push_back(0);
   req_t.params.min_count = 0;
   req_t.params.max_count = 0;
-  bool r = net_utils::invoke_http_json_remote_command2(m_daemon_address + "/json_rpc", req_t, resp_t, m_http_client);
+  bool r = net_utils::invoke_http_json("/json_rpc", req_t, resp_t, m_http_client);
   m_daemon_rpc_mutex.unlock();
   THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "get_num_rct_outputs");
   THROW_WALLET_EXCEPTION_IF(resp_t.result.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "get_output_histogram");
@@ -4784,7 +4777,7 @@ uint64_t wallet2::get_daemon_blockchain_target_height(string &err)
   req_t.jsonrpc = "2.0";
   req_t.id = epee::serialization::storage_entry(0);
   req_t.method = "get_info";
-  bool ok = net_utils::invoke_http_json_remote_command2(m_daemon_address + "/json_rpc", req_t, resp_t, m_http_client);
+  bool ok = net_utils::invoke_http_json("/json_rpc", req_t, resp_t, m_http_client);
   m_daemon_rpc_mutex.unlock();
   if (ok)
   {
@@ -5097,7 +5090,7 @@ uint64_t wallet2::import_key_images(const std::vector<std::pair<crypto::key_imag
   }
 
   m_daemon_rpc_mutex.lock();
-  bool r = epee::net_utils::invoke_http_json_remote_command2(m_daemon_address + "/is_key_image_spent", req, daemon_resp, m_http_client, 200000);
+  bool r = epee::net_utils::invoke_http_json("/is_key_image_spent", req, daemon_resp, m_http_client, rpc_timeout);
   m_daemon_rpc_mutex.unlock();
   THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "is_key_image_spent");
   THROW_WALLET_EXCEPTION_IF(daemon_resp.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "is_key_image_spent");
@@ -5407,7 +5400,7 @@ uint64_t wallet2::get_blockchain_height_by_date(uint16_t year, uint8_t month, ui
       height_mid,
       height_max
     };
-    bool r = net_utils::invoke_http_bin_remote_command2(get_daemon_address() + "/getblocks_by_height.bin", req, res, m_http_client);
+    bool r = net_utils::invoke_http_bin("/getblocks_by_height.bin", req, res, m_http_client);
     if (!r || res.status != CORE_RPC_STATUS_OK)
     {
       std::ostringstream oss;
diff --git a/src/wallet/wallet2.h b/src/wallet/wallet2.h
index 629011800..437729075 100644
--- a/src/wallet/wallet2.h
+++ b/src/wallet/wallet2.h
@@ -61,8 +61,6 @@
 #undef MONERO_DEFAULT_LOG_CATEGORY
 #define MONERO_DEFAULT_LOG_CATEGORY "wallet.wallet2"
 
-#define WALLET_RCP_CONNECTION_TIMEOUT                          200000
-
 class Serialization_portability_wallet_Test;
 
 namespace tools
@@ -96,6 +94,8 @@ namespace tools
   {
     friend class ::Serialization_portability_wallet_Test;
   public:
+    static constexpr const std::chrono::seconds rpc_timeout = std::chrono::minutes(3) + std::chrono::seconds(30);
+
     enum RefreshType {
       RefreshFull,
       RefreshOptimizeCoinbase,
@@ -107,7 +107,7 @@ namespace tools
     wallet2(const wallet2&) : m_run(true), m_callback(0), m_testnet(false), m_always_confirm_transfers(true), m_print_ring_members(false), m_store_tx_info(true), m_default_mixin(0), m_default_priority(0), m_refresh_type(RefreshOptimizeCoinbase), m_auto_refresh(true), m_refresh_from_block_height(0), m_confirm_missing_payment_id(true), m_node_rpc_proxy(m_http_client, m_daemon_rpc_mutex) {}
 
   public:
-    static const char* tr(const char* str);// { return i18n_translate(str, "cryptonote::simple_wallet"); }
+    static const char* tr(const char* str);
 
     static bool has_testnet_option(const boost::program_options::variables_map& vm);
     static void init_options(boost::program_options::options_description& desc_params);
@@ -342,8 +342,8 @@ namespace tools
     // free block size. TODO: fix this so that it actually takes
     // into account the current median block size rather than
     // the minimum block size.
-    void init(const std::string& daemon_address = "http://localhost:8080", uint64_t upper_transaction_size_limit = 0);
     bool deinit();
+    bool init(std::string daemon_address = "http://localhost:8080", uint64_t upper_transaction_size_limit = 0);
 
     void stop() { m_run.store(false, std::memory_order_relaxed); }
 
@@ -1018,7 +1018,7 @@ namespace tools
       }
 
       m_daemon_rpc_mutex.lock();
-      bool r = epee::net_utils::invoke_http_bin_remote_command2(m_daemon_address + "/getrandom_outs.bin", req, daemon_resp, m_http_client, 200000);
+      bool r = epee::net_utils::invoke_http_bin("/getrandom_outs.bin", req, daemon_resp, m_http_client, rpc_timeout);
       m_daemon_rpc_mutex.unlock();
       THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "getrandom_outs.bin");
       THROW_WALLET_EXCEPTION_IF(daemon_resp.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "getrandom_outs.bin");