* repeater and room server: login password now using strcmp(), new 'set direct.txdelay ..' config

examples/simple_repeater/main.cpp

@@ -138,6 +138,7 @@ struct NodePrefs {  // persisted to file
   float rx_delay_base;
   float tx_delay_factor;
   char guest_password[16];
+  float direct_tx_delay_factor;
 };
 
 class MyMesh : public mesh::Mesh {
@@ -309,6 +310,10 @@ protected:
     uint32_t t = (_radio->getEstAirtimeFor(packet->path_len + packet->payload_len + 2) * _prefs.tx_delay_factor);
     return getRNG()->nextInt(0, 6)*t;
   }
+  uint32_t getDirectRetransmitDelay(const mesh::Packet* packet) override {
+    uint32_t t = (_radio->getEstAirtimeFor(packet->path_len + packet->payload_len + 2) * _prefs.direct_tx_delay_factor);
+    return getRNG()->nextInt(0, 6)*t;
+  }
 
   void onAnonDataRecv(mesh::Packet* packet, uint8_t type, const mesh::Identity& sender, uint8_t* data, size_t len) override {
     if (type == PAYLOAD_TYPE_ANON_REQ) {  // received an initial request by a possible admin client (unknown at this stage)
@@ -316,13 +321,13 @@ protected:
       memcpy(&timestamp, data, 4);
 
       bool is_admin;
-      if (memcmp(&data[4], _prefs.password, strlen(_prefs.password)) == 0) {  // check for valid password
+      data[len] = 0;  // ensure null terminator
+      if (strcmp((char *) &data[4], _prefs.password) == 0) {  // check for valid password
         is_admin = true;
-      } else if (memcmp(&data[4], _prefs.guest_password, strlen(_prefs.guest_password)) == 0) {  // check guest password
+      } else if (strcmp((char *) &data[4], _prefs.guest_password) == 0) {  // check guest password
         is_admin = false;
       } else {
     #if MESH_DEBUG
-        data[len] = 0;  // ensure null terminator
         MESH_DEBUG_PRINTLN("Invalid password: %s", &data[4]);
     #endif
         return;
@@ -675,6 +680,15 @@ public:
         } else {
           strcpy(reply, "Error, cannot be negative");
         }
+      } else if (memcmp(config, "direct.txdelay ", 15) == 0) {
+        float f = atof(&config[15]);
+        if (f >= 0) {
+          _prefs.direct_tx_delay_factor = f;
+          savePrefs();
+          strcpy(reply, "OK");
+        } else {
+          strcpy(reply, "Error, cannot be negative");
+        }
       } else if (memcmp(config, "tx ", 3) == 0) {
         _prefs.tx_power_dbm = atoi(&config[3]);
         savePrefs();

examples/simple_room_server/main.cpp

@@ -145,6 +145,7 @@ struct NodePrefs {  // persisted to file
   float rx_delay_base;
   float tx_delay_factor;
   char guest_password[16];
+  float direct_tx_delay_factor;
 };
 
 class MyMesh : public mesh::Mesh {
@@ -295,6 +296,10 @@ protected:
     uint32_t t = (_radio->getEstAirtimeFor(packet->path_len + packet->payload_len + 2) * _prefs.tx_delay_factor);
     return getRNG()->nextInt(0, 6)*t;
   }
+  uint32_t getDirectRetransmitDelay(const mesh::Packet* packet) override {
+    uint32_t t = (_radio->getEstAirtimeFor(packet->path_len + packet->payload_len + 2) * _prefs.direct_tx_delay_factor);
+    return getRNG()->nextInt(0, 6)*t;
+  }
 
   bool allowPacketForward(const mesh::Packet* packet) override {
     return !_prefs.disable_fwd;
@@ -307,12 +312,12 @@ protected:
       memcpy(&sender_sync_since, &data[4], 4);  // sender's "sync messags SINCE x" timestamp
 
       bool is_admin;
-      if (memcmp(&data[8], _prefs.password, strlen(_prefs.password)) == 0) {  // check for valid admin password
+      data[len] = 0;  // ensure null terminator
+      if (strcmp((char *) &data[8], _prefs.password) == 0) {  // check for valid admin password
         is_admin = true;
       } else {
         is_admin = false;
-        int len = strlen(_prefs.guest_password);
-        if (len > 0 && memcmp(&data[8], _prefs.guest_password, len) != 0) {  // check the room/public password
+        if (strcmp((char *) &data[8], _prefs.guest_password) != 0) {  // check the room/public password
           MESH_DEBUG_PRINTLN("Incorrect room password");
           return;   // no response. Client will timeout
         }
@@ -694,6 +699,15 @@ public:
         } else {
           strcpy(reply, "Error, cannot be negative");
         }
+      } else if (memcmp(config, "direct.txdelay ", 15) == 0) {
+        float f = atof(&config[15]);
+        if (f >= 0) {
+          _prefs.direct_tx_delay_factor = f;
+          savePrefs();
+          strcpy(reply, "OK");
+        } else {
+          strcpy(reply, "Error, cannot be negative");
+        }
       } else if (memcmp(config, "tx ", 3) == 0) {
         _prefs.tx_power_dbm = atoi(&config[3]);
         savePrefs();

src/Mesh.cpp

@@ -19,6 +19,9 @@ uint32_t Mesh::getRetransmitDelay(const mesh::Packet* packet) {
 
   return _rng->nextInt(0, 5)*t;
 }
+uint32_t Mesh::getDirectRetransmitDelay(const Packet* packet) {
+  return 0;  // by default, no delay
+}
 
 int Mesh::searchPeersByHash(const uint8_t* hash) {
   return 0;  // not found
@@ -41,7 +44,9 @@ DispatcherAction Mesh::onRecvPacket(Packet* pkt) {
       // remove our hash from 'path', then re-broadcast
       pkt->path_len -= PATH_HASH_SIZE;
       memcpy(pkt->path, &pkt->path[PATH_HASH_SIZE], pkt->path_len);
-      return ACTION_RETRANSMIT(0);   // Routed traffic is HIGHEST priority (and NO per-hop delay)
+
+      uint32_t d = getDirectRetransmitDelay(pkt);
+      return ACTION_RETRANSMIT_DELAYED(0, d);  // Routed traffic is HIGHEST priority 
     }
     return ACTION_RELEASE;   // this node is NOT the next hop (OR this packet has already been forwarded), so discard.
   }

src/Mesh.h

@@ -74,6 +74,11 @@ protected:
    */
   virtual uint32_t getRetransmitDelay(const Packet* packet);
 
+  /**
+   * \returns  number of milliseconds delay to apply to retransmitting the given packet, for DIRECT mode.
+   */
+  virtual uint32_t getDirectRetransmitDelay(const Packet* packet);
+
   /**
    * \brief  Perform search of local DB of peers/contacts.
    * \returns  Number of peers with matching hash