diff --git a/.gitignore b/.gitignore
index 33b7971069..33d31c037c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,6 +36,7 @@ testing/data
 
 # Vim
 *.swp
+*.nvimlog
 
 # Object files
 *.o
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6f6d37da13..caafd641a7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -306,6 +306,8 @@ set(toxcore_SOURCES
   toxcore/mem.h
   toxcore/mono_time.c
   toxcore/mono_time.h
+  toxcore/net_profile.c
+  toxcore/net_profile.h
   toxcore/net_crypto.c
   toxcore/net_crypto.h
   toxcore/network.c
diff --git a/auto_tests/CMakeLists.txt b/auto_tests/CMakeLists.txt
index d891ba122b..d3383c4fca 100644
--- a/auto_tests/CMakeLists.txt
+++ b/auto_tests/CMakeLists.txt
@@ -67,6 +67,7 @@ auto_test(invalid_udp_proxy)
 auto_test(lan_discovery)
 auto_test(lossless_packet)
 auto_test(lossy_packet)
+auto_test(netprof)
 auto_test(network)
 auto_test(onion)
 auto_test(overflow_recvq)
diff --git a/auto_tests/TCP_test.c b/auto_tests/TCP_test.c
index c4ea79b08d..baaa4a2d13 100644
--- a/auto_tests/TCP_test.c
+++ b/auto_tests/TCP_test.c
@@ -111,12 +111,12 @@ static void test_basic(void)
 
     // Sending the handshake
     ck_assert_msg(net_send(ns, logger, sock, handshake, TCP_CLIENT_HANDSHAKE_SIZE - 1,
-                           &localhost) == TCP_CLIENT_HANDSHAKE_SIZE - 1,
+                           &localhost, nullptr) == TCP_CLIENT_HANDSHAKE_SIZE - 1,
                   "An attempt to send the initial handshake minus last byte failed.");
 
     do_tcp_server_delay(tcp_s, mono_time, 50);
 
-    ck_assert_msg(net_send(ns, logger, sock, handshake + (TCP_CLIENT_HANDSHAKE_SIZE - 1), 1, &localhost) == 1,
+    ck_assert_msg(net_send(ns, logger, sock, handshake + (TCP_CLIENT_HANDSHAKE_SIZE - 1), 1, &localhost, nullptr) == 1,
                   "The attempt to send the last byte of handshake failed.");
 
     free(handshake);
@@ -155,7 +155,7 @@ static void test_basic(void)
             msg_length = sizeof(r_req) - i;
         }
 
-        ck_assert_msg(net_send(ns, logger, sock, r_req + i, msg_length, &localhost) == msg_length,
+        ck_assert_msg(net_send(ns, logger, sock, r_req + i, msg_length, &localhost, nullptr) == msg_length,
                       "Failed to send request after completing the handshake.");
         i += msg_length;
 
@@ -234,12 +234,12 @@ static struct sec_TCP_con *new_tcp_con(const Logger *logger, const Memory *mem,
                   "Failed to encrypt the outgoing handshake.");
 
     ck_assert_msg(net_send(ns, logger, sock, handshake, TCP_CLIENT_HANDSHAKE_SIZE - 1,
-                           &localhost) == TCP_CLIENT_HANDSHAKE_SIZE - 1,
+                           &localhost, nullptr) == TCP_CLIENT_HANDSHAKE_SIZE - 1,
                   "Failed to send the first portion of the handshake to the TCP relay server.");
 
     do_tcp_server_delay(tcp_s, mono_time, 50);
 
-    ck_assert_msg(net_send(ns, logger, sock, handshake + (TCP_CLIENT_HANDSHAKE_SIZE - 1), 1, &localhost) == 1,
+    ck_assert_msg(net_send(ns, logger, sock, handshake + (TCP_CLIENT_HANDSHAKE_SIZE - 1), 1, &localhost, nullptr) == 1,
                   "Failed to send last byte of handshake.");
 
     do_tcp_server_delay(tcp_s, mono_time, 50);
@@ -283,7 +283,7 @@ static int write_packet_tcp_test_connection(const Logger *logger, struct sec_TCP
     localhost.ip = get_loopback();
     localhost.port = 0;
 
-    ck_assert_msg(net_send(con->ns, logger, con->sock, packet, packet_size, &localhost) == packet_size,
+    ck_assert_msg(net_send(con->ns, logger, con->sock, packet, packet_size, &localhost, nullptr) == packet_size,
                   "Failed to send a packet.");
     return 0;
 }
@@ -524,7 +524,7 @@ static void test_client(void)
     ip_port_tcp_s.port = net_htons(ports[random_u32(rng) % NUM_PORTS]);
     ip_port_tcp_s.ip = get_loopback();
 
-    TCP_Client_Connection *conn = new_tcp_connection(logger, mem, mono_time, rng, ns, &ip_port_tcp_s, self_public_key, f_public_key, f_secret_key, nullptr);
+    TCP_Client_Connection *conn = new_tcp_connection(logger, mem, mono_time, rng, ns, &ip_port_tcp_s, self_public_key, f_public_key, f_secret_key, nullptr, nullptr);
     // TCP sockets might need a moment before they can be written to.
     c_sleep(50);
     do_tcp_connection(logger, mono_time, conn, nullptr);
@@ -560,7 +560,7 @@ static void test_client(void)
     crypto_new_keypair(rng, f2_public_key, f2_secret_key);
     ip_port_tcp_s.port = net_htons(ports[random_u32(rng) % NUM_PORTS]);
     TCP_Client_Connection *conn2 = new_tcp_connection(logger, mem, mono_time, rng, ns, &ip_port_tcp_s, self_public_key, f2_public_key,
-                                   f2_secret_key, nullptr);
+                                   f2_secret_key, nullptr, nullptr);
     c_sleep(50);
 
     // The client should call this function (defined earlier) during the routing process.
@@ -657,7 +657,7 @@ static void test_client_invalid(void)
     ip_port_tcp_s.port = net_htons(ports[random_u32(rng) % NUM_PORTS]);
     ip_port_tcp_s.ip = get_loopback();
     TCP_Client_Connection *conn = new_tcp_connection(logger, mem, mono_time, rng, ns, &ip_port_tcp_s,
-                                  self_public_key, f_public_key, f_secret_key, nullptr);
+                                  self_public_key, f_public_key, f_secret_key, nullptr, nullptr);
 
     // Run the client's main loop but not the server.
     mono_time_update(mono_time);
diff --git a/auto_tests/netprof_test.c b/auto_tests/netprof_test.c
new file mode 100644
index 0000000000..f9207fee52
--- /dev/null
+++ b/auto_tests/netprof_test.c
@@ -0,0 +1,120 @@
+/** Auto Tests: basic network profile functionality test (UDP only)
+ * TODO(JFreegman): test TCP packets as well
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+
+#include "../toxcore/tox_private.h"
+#include "../toxcore/util.h"
+
+#include "auto_test_support.h"
+#include "check_compat.h"
+
+#define NUM_TOXES 2
+
+static void test_netprof(AutoTox *autotoxes)
+{
+    // Send some messages to create fake traffic
+    for (size_t i = 0; i < 256; ++i) {
+        for (uint32_t j = 0; j < NUM_TOXES; ++j) {
+            tox_friend_send_message(autotoxes[j].tox, 0, TOX_MESSAGE_TYPE_NORMAL, (const uint8_t *)"test", 4, nullptr);
+        }
+
+        iterate_all_wait(autotoxes, NUM_TOXES, ITERATION_INTERVAL);
+    }
+
+    // idle traffic for a while
+    for (size_t i = 0; i < 100; ++i) {
+        iterate_all_wait(autotoxes, NUM_TOXES, ITERATION_INTERVAL);
+    }
+
+    const Tox *tox1 = autotoxes[0].tox;
+
+    const unsigned long long UDP_count_sent1 = tox_netprof_get_packet_total_count(tox1, TOX_NETPROF_PACKET_TYPE_UDP,
+            TOX_NETPROF_DIRECTION_SENT);
+    const unsigned long long UDP_count_recv1 = tox_netprof_get_packet_total_count(tox1, TOX_NETPROF_PACKET_TYPE_UDP,
+            TOX_NETPROF_DIRECTION_RECV);
+    const unsigned long long TCP_count_sent1 = tox_netprof_get_packet_total_count(tox1, TOX_NETPROF_PACKET_TYPE_TCP,
+            TOX_NETPROF_DIRECTION_SENT);
+    const unsigned long long TCP_count_recv1 = tox_netprof_get_packet_total_count(tox1, TOX_NETPROF_PACKET_TYPE_TCP,
+            TOX_NETPROF_DIRECTION_RECV);
+
+    const unsigned long long UDP_bytes_sent1 = tox_netprof_get_packet_total_bytes(tox1, TOX_NETPROF_PACKET_TYPE_UDP,
+            TOX_NETPROF_DIRECTION_SENT);
+    const unsigned long long UDP_bytes_recv1 = tox_netprof_get_packet_total_bytes(tox1, TOX_NETPROF_PACKET_TYPE_UDP,
+            TOX_NETPROF_DIRECTION_RECV);
+    const unsigned long long TCP_bytes_sent1 = tox_netprof_get_packet_total_bytes(tox1, TOX_NETPROF_PACKET_TYPE_TCP,
+            TOX_NETPROF_DIRECTION_SENT);
+    const unsigned long long TCP_bytes_recv1 = tox_netprof_get_packet_total_bytes(tox1, TOX_NETPROF_PACKET_TYPE_TCP,
+            TOX_NETPROF_DIRECTION_RECV);
+
+    ck_assert(UDP_count_recv1 > 0 && UDP_count_sent1 > 0);
+    ck_assert(UDP_bytes_recv1 > 0 && UDP_bytes_sent1 > 0);
+
+    (void)TCP_count_sent1;
+    (void)TCP_bytes_sent1;
+    (void)TCP_bytes_recv1;
+    (void)TCP_count_recv1;
+
+    unsigned long long total_sent_count = 0;
+    unsigned long long total_recv_count = 0;
+    unsigned long long total_sent_bytes = 0;
+    unsigned long long total_recv_bytes = 0;
+
+    // tox1 makes sure the sum value of all packet ID's is equal to the totals
+    for (size_t i = 0; i < 256; ++i) {
+        // this id isn't valid for UDP packets but we still want to call the
+        // functions and make sure they return some non-zero value
+        if (i == TOX_NETPROF_PACKET_ID_TCP_DATA) {
+            ck_assert(tox_netprof_get_packet_id_count(tox1, TOX_NETPROF_PACKET_TYPE_UDP, i,
+                      TOX_NETPROF_DIRECTION_SENT) > 0);
+            ck_assert(tox_netprof_get_packet_id_bytes(tox1, TOX_NETPROF_PACKET_TYPE_UDP, i,
+                      TOX_NETPROF_DIRECTION_SENT) > 0);
+            ck_assert(tox_netprof_get_packet_id_bytes(tox1, TOX_NETPROF_PACKET_TYPE_UDP, i,
+                      TOX_NETPROF_DIRECTION_SENT) > 0);
+            ck_assert(tox_netprof_get_packet_id_bytes(tox1, TOX_NETPROF_PACKET_TYPE_UDP, i,
+                      TOX_NETPROF_DIRECTION_RECV) > 0);
+            continue;
+        }
+
+        total_sent_count += tox_netprof_get_packet_id_count(tox1, TOX_NETPROF_PACKET_TYPE_UDP, i,
+                            TOX_NETPROF_DIRECTION_SENT);
+        total_recv_count += tox_netprof_get_packet_id_count(tox1, TOX_NETPROF_PACKET_TYPE_UDP, i,
+                            TOX_NETPROF_DIRECTION_RECV);
+
+        total_sent_bytes += tox_netprof_get_packet_id_bytes(tox1, TOX_NETPROF_PACKET_TYPE_UDP, i,
+                            TOX_NETPROF_DIRECTION_SENT);
+        total_recv_bytes += tox_netprof_get_packet_id_bytes(tox1, TOX_NETPROF_PACKET_TYPE_UDP, i,
+                            TOX_NETPROF_DIRECTION_RECV);
+    }
+
+    const unsigned long long total_packets = total_sent_count + total_recv_count;
+    ck_assert_msg(total_packets == UDP_count_sent1 + UDP_count_recv1,
+                  "%llu does not match %llu\n", total_packets, UDP_count_sent1 + UDP_count_recv1);
+
+    ck_assert_msg(total_sent_count == UDP_count_sent1, "%llu does not match %llu\n", total_sent_count, UDP_count_sent1);
+    ck_assert_msg(total_recv_count == UDP_count_recv1, "%llu does not match %llu\n", total_recv_count, UDP_count_recv1);
+
+
+    const unsigned long long total_bytes = total_sent_bytes + total_recv_bytes;
+    ck_assert_msg(total_bytes == UDP_bytes_sent1 + UDP_bytes_recv1,
+                  "%llu does not match %llu\n", total_bytes, UDP_bytes_sent1 + UDP_bytes_recv1);
+
+    ck_assert_msg(total_sent_bytes == UDP_bytes_sent1, "%llu does not match %llu\n", total_sent_bytes, UDP_bytes_sent1);
+    ck_assert_msg(total_recv_bytes == UDP_bytes_recv1, "%llu does not match %llu\n", total_recv_bytes, UDP_bytes_recv1);
+}
+
+int main(void)
+{
+    setvbuf(stdout, nullptr, _IONBF, 0);
+
+    Run_Auto_Options autotox_opts = default_run_auto_options();
+    autotox_opts.graph = GRAPH_COMPLETE;
+
+    run_auto_test(nullptr, NUM_TOXES, test_netprof, 0, &autotox_opts);
+
+    return 0;
+}
+
+#undef NUM_TOXES
diff --git a/auto_tests/onion_test.c b/auto_tests/onion_test.c
index 3a81df41b8..549f8ce9dd 100644
--- a/auto_tests/onion_test.c
+++ b/auto_tests/onion_test.c
@@ -202,7 +202,7 @@ static int handle_test_4(void *object, const IP_Port *source, const uint8_t *pac
  * Use Onion_Path path to send data of length to dest.
  * Maximum length of data is ONION_MAX_DATA_SIZE.
  */
-static void send_onion_packet(const Networking_Core *net, const Random *rng, const Onion_Path *path, const IP_Port *dest, const uint8_t *data, uint16_t length)
+static void send_onion_packet(Networking_Core *net, const Random *rng, const Onion_Path *path, const IP_Port *dest, const uint8_t *data, uint16_t length)
 {
     uint8_t packet[ONION_MAX_PACKET_SIZE];
     const int len = create_onion_packet(rng, packet, sizeof(packet), path, dest, data, length);
diff --git a/other/bootstrap_node_packets.c b/other/bootstrap_node_packets.c
index c250b2552b..03b62b9419 100644
--- a/other/bootstrap_node_packets.c
+++ b/other/bootstrap_node_packets.c
@@ -30,7 +30,7 @@ static int handle_info_request(void *object, const IP_Port *source, const uint8_
         return 1;
     }
 
-    const Networking_Core *nc = (const Networking_Core *)object;
+    Networking_Core *nc = (Networking_Core *)object;
 
     uint8_t data[1 + sizeof(bootstrap_version) + MAX_MOTD_LENGTH];
     data[0] = BOOTSTRAP_INFO_PACKET_ID;
diff --git a/toxcore/BUILD.bazel b/toxcore/BUILD.bazel
index 0f313e2af5..edcb3cb267 100644
--- a/toxcore/BUILD.bazel
+++ b/toxcore/BUILD.bazel
@@ -299,6 +299,16 @@ cc_library(
     ],
 )
 
+cc_library(
+    name = "net_profile",
+    srcs = ["net_profile.c"],
+    hdrs = ["net_profile.h"],
+    deps = [
+        ":attributes",
+        ":ccompat",
+    ],
+)
+
 cc_library(
     name = "network",
     srcs = ["network.c"],
@@ -318,6 +328,7 @@ cc_library(
         ":logger",
         ":mem",
         ":mono_time",
+        ":net_profile",
         ":util",
         "@libsodium",
         "@psocket",
@@ -570,6 +581,7 @@ cc_library(
         ":crypto_core",
         ":logger",
         ":mem",
+        ":net_profile",
         ":network",
     ],
 )
@@ -597,6 +609,7 @@ cc_library(
         ":logger",
         ":mem",
         ":mono_time",
+        ":net_profile",
         ":network",
         ":onion",
         ":util",
@@ -618,6 +631,7 @@ cc_library(
         ":logger",
         ":mem",
         ":mono_time",
+        ":net_profile",
         ":network",
         ":util",
     ],
@@ -640,6 +654,7 @@ cc_library(
         ":logger",
         ":mem",
         ":mono_time",
+        ":net_profile",
         ":network",
         ":onion",
         ":util",
@@ -674,6 +689,7 @@ cc_library(
         ":logger",
         ":mem",
         ":mono_time",
+        ":net_profile",
         ":network",
         ":util",
         "@pthread",
@@ -993,6 +1009,7 @@ cc_library(
         ":DHT",
         ":Messenger",
         ":TCP_client",
+        ":TCP_server",
         ":attributes",
         ":ccompat",
         ":crypto_core",
@@ -1003,6 +1020,7 @@ cc_library(
         ":mem",
         ":mono_time",
         ":net_crypto",
+        ":net_profile",
         ":network",
         ":onion_client",
         ":state",
diff --git a/toxcore/LAN_discovery.c b/toxcore/LAN_discovery.c
index aead975911..8b746a0cd9 100644
--- a/toxcore/LAN_discovery.c
+++ b/toxcore/LAN_discovery.c
@@ -210,7 +210,7 @@ static Broadcast_Info *fetch_broadcast_info(const Network *ns)
  * @retval false on failure to find any valid broadcast target.
  */
 non_null()
-static bool send_broadcasts(const Networking_Core *net, const Broadcast_Info *broadcast, uint16_t port,
+static bool send_broadcasts(Networking_Core *net, const Broadcast_Info *broadcast, uint16_t port,
                             const uint8_t *data, uint16_t length)
 {
     if (broadcast->count == 0) {
@@ -339,7 +339,7 @@ bool ip_is_lan(const IP *ip)
     return false;
 }
 
-bool lan_discovery_send(const Networking_Core *net, const Broadcast_Info *broadcast, const uint8_t *dht_pk,
+bool lan_discovery_send(Networking_Core *net, const Broadcast_Info *broadcast, const uint8_t *dht_pk,
                         uint16_t port)
 {
     if (broadcast == nullptr) {
diff --git a/toxcore/LAN_discovery.h b/toxcore/LAN_discovery.h
index 94e5d3581c..6486243ed5 100644
--- a/toxcore/LAN_discovery.h
+++ b/toxcore/LAN_discovery.h
@@ -25,7 +25,7 @@ typedef struct Broadcast_Info Broadcast_Info;
  * @return true on success, false on failure.
  */
 non_null()
-bool lan_discovery_send(const Networking_Core *net, const Broadcast_Info *broadcast, const uint8_t *dht_pk,
+bool lan_discovery_send(Networking_Core *net, const Broadcast_Info *broadcast, const uint8_t *dht_pk,
                         uint16_t port);
 
 /**
diff --git a/toxcore/Makefile.inc b/toxcore/Makefile.inc
index db3e193243..e22e59d9e0 100644
--- a/toxcore/Makefile.inc
+++ b/toxcore/Makefile.inc
@@ -74,6 +74,8 @@ libtoxcore_la_SOURCES = ../third_party/cmp/cmp.c \
                         ../toxcore/ping_array.c \
                         ../toxcore/net_crypto.h \
                         ../toxcore/net_crypto.c \
+                        ../toxcore/net_profile.c \
+                        ../toxcore/net_profile.h \
                         ../toxcore/friend_requests.h \
                         ../toxcore/friend_requests.c \
                         ../toxcore/LAN_discovery.h \
diff --git a/toxcore/TCP_client.c b/toxcore/TCP_client.c
index 2b8c6e448f..2c66fe977e 100644
--- a/toxcore/TCP_client.c
+++ b/toxcore/TCP_client.c
@@ -20,6 +20,7 @@
 #include "logger.h"
 #include "mem.h"
 #include "mono_time.h"
+#include "net_profile.h"
 #include "network.h"
 #include "util.h"
 
@@ -582,7 +583,7 @@ void forwarding_handler(TCP_Client_Connection *con, forwarded_response_cb *forwa
 TCP_Client_Connection *new_tcp_connection(
     const Logger *logger, const Memory *mem, const Mono_Time *mono_time, const Random *rng, const Network *ns,
     const IP_Port *ip_port, const uint8_t *public_key, const uint8_t *self_public_key, const uint8_t *self_secret_key,
-    const TCP_Proxy_Info *proxy_info)
+    const TCP_Proxy_Info *proxy_info, Net_Profile *net_profile)
 {
     assert(logger != nullptr);
     assert(mem != nullptr);
@@ -634,6 +635,7 @@ TCP_Client_Connection *new_tcp_connection(
     temp->con.rng = rng;
     temp->con.sock = sock;
     temp->con.ip_port = *ip_port;
+    temp->con.net_profile = net_profile;
     memcpy(temp->public_key, public_key, CRYPTO_PUBLIC_KEY_SIZE);
     memcpy(temp->self_public_key, self_public_key, CRYPTO_PUBLIC_KEY_SIZE);
     encrypt_precompute(temp->public_key, self_secret_key, temp->con.shared_key);
@@ -819,6 +821,8 @@ static int handle_tcp_client_packet(const Logger *logger, TCP_Client_Connection
         return -1;
     }
 
+    netprof_record_packet(conn->con.net_profile, data[0], length, PACKET_DIRECTION_RECV);
+
     switch (data[0]) {
         case TCP_PACKET_ROUTING_RESPONSE:
             return handle_tcp_client_routing_response(conn, data, length);
diff --git a/toxcore/TCP_client.h b/toxcore/TCP_client.h
index ea2654b953..b103baa6c1 100644
--- a/toxcore/TCP_client.h
+++ b/toxcore/TCP_client.h
@@ -15,6 +15,7 @@
 #include "logger.h"
 #include "mem.h"
 #include "mono_time.h"
+#include "net_profile.h"
 #include "network.h"
 
 #define TCP_CONNECTION_TIMEOUT 10
@@ -60,11 +61,11 @@ non_null()
 void tcp_con_set_custom_uint(TCP_Client_Connection *con, uint32_t value);
 
 /** Create new TCP connection to ip_port/public_key */
-non_null(1, 2, 3, 4, 5, 6, 7, 8, 9) nullable(10)
+non_null(1, 2, 3, 4, 5, 6, 7, 8, 9) nullable(10, 11)
 TCP_Client_Connection *new_tcp_connection(
     const Logger *logger, const Memory *mem, const Mono_Time *mono_time, const Random *rng, const Network *ns,
     const IP_Port *ip_port, const uint8_t *public_key, const uint8_t *self_public_key, const uint8_t *self_secret_key,
-    const TCP_Proxy_Info *proxy_info);
+    const TCP_Proxy_Info *proxy_info, Net_Profile *net_profile);
 
 /** Run the TCP connection */
 non_null(1, 2, 3) nullable(4)
diff --git a/toxcore/TCP_common.c b/toxcore/TCP_common.c
index bd3b7ca4c7..919f09f76f 100644
--- a/toxcore/TCP_common.c
+++ b/toxcore/TCP_common.c
@@ -35,7 +35,8 @@ int send_pending_data_nonpriority(const Logger *logger, TCP_Connection *con)
     }
 
     const uint16_t left = con->last_packet_length - con->last_packet_sent;
-    const int len = net_send(con->ns, logger, con->sock, con->last_packet + con->last_packet_sent, left, &con->ip_port);
+    const int len = net_send(con->ns, logger, con->sock, con->last_packet + con->last_packet_sent, left, &con->ip_port,
+                             con->net_profile);
 
     if (len <= 0) {
         return -1;
@@ -66,7 +67,7 @@ int send_pending_data(const Logger *logger, TCP_Connection *con)
 
     while (p != nullptr) {
         const uint16_t left = p->size - p->sent;
-        const int len = net_send(con->ns, logger, con->sock, p->data + p->sent, left, &con->ip_port);
+        const int len = net_send(con->ns, logger, con->sock, p->data + p->sent, left, &con->ip_port, con->net_profile);
 
         if (len != left) {
             if (len > 0) {
@@ -164,7 +165,8 @@ int write_packet_tcp_secure_connection(const Logger *logger, TCP_Connection *con
     }
 
     if (priority) {
-        len = sendpriority ? net_send(con->ns, logger, con->sock, packet, packet_size, &con->ip_port) : 0;
+        len = sendpriority ? net_send(con->ns, logger, con->sock, packet, packet_size, &con->ip_port,
+                                      con->net_profile) : 0;
 
         if (len <= 0) {
             len = 0;
@@ -179,7 +181,7 @@ int write_packet_tcp_secure_connection(const Logger *logger, TCP_Connection *con
         return add_priority(con, packet, packet_size, len) ? 1 : 0;
     }
 
-    len = net_send(con->ns, logger, con->sock, packet, packet_size, &con->ip_port);
+    len = net_send(con->ns, logger, con->sock, packet, packet_size, &con->ip_port, con->net_profile);
 
     if (len <= 0) {
         return 0;
diff --git a/toxcore/TCP_common.h b/toxcore/TCP_common.h
index 9fa136609c..3b6a5488a8 100644
--- a/toxcore/TCP_common.h
+++ b/toxcore/TCP_common.h
@@ -10,6 +10,7 @@
 #include "crypto_core.h"
 #include "logger.h"
 #include "mem.h"
+#include "net_profile.h"
 #include "network.h"
 
 typedef struct TCP_Priority_List TCP_Priority_List;
@@ -66,6 +67,10 @@ typedef struct TCP_Connection {
 
     TCP_Priority_List *priority_queue_start;
     TCP_Priority_List *priority_queue_end;
+
+    // This is a shared pointer to the parent's respective Net_Profile object
+    // (either TCP_Server for TCP server packets or TCP_Connections for TCP client packets).
+    Net_Profile *net_profile;
 } TCP_Connection;
 
 /**
diff --git a/toxcore/TCP_connection.c b/toxcore/TCP_connection.c
index c7161a9289..bbfc413701 100644
--- a/toxcore/TCP_connection.c
+++ b/toxcore/TCP_connection.c
@@ -20,6 +20,7 @@
 #include "logger.h"
 #include "mem.h"
 #include "mono_time.h"
+#include "net_profile.h"
 #include "network.h"
 #include "util.h"
 
@@ -56,6 +57,9 @@ struct TCP_Connections {
 
     bool onion_status;
     uint16_t onion_num_conns;
+
+    /* Network profile for all TCP client packets. */
+    Net_Profile net_profile;
 };
 
 static const TCP_Connection_to empty_tcp_connection_to = {0};
@@ -928,7 +932,8 @@ static int reconnect_tcp_relay_connection(TCP_Connections *tcp_c, int tcp_connec
     uint8_t relay_pk[CRYPTO_PUBLIC_KEY_SIZE];
     memcpy(relay_pk, tcp_con_public_key(tcp_con->connection), CRYPTO_PUBLIC_KEY_SIZE);
     kill_tcp_connection(tcp_con->connection);
-    tcp_con->connection = new_tcp_connection(tcp_c->logger, tcp_c->mem, tcp_c->mono_time, tcp_c->rng, tcp_c->ns, &ip_port, relay_pk, tcp_c->self_public_key, tcp_c->self_secret_key, &tcp_c->proxy_info);
+    tcp_con->connection = new_tcp_connection(tcp_c->logger, tcp_c->mem, tcp_c->mono_time, tcp_c->rng, tcp_c->ns, &ip_port, relay_pk, tcp_c->self_public_key, tcp_c->self_secret_key, &tcp_c->proxy_info,
+                          &tcp_c->net_profile);
 
     if (tcp_con->connection == nullptr) {
         kill_tcp_relay_connection(tcp_c, tcp_connections_number);
@@ -1017,7 +1022,7 @@ static int unsleep_tcp_relay_connection(TCP_Connections *tcp_c, int tcp_connecti
 
     tcp_con->connection = new_tcp_connection(
                               tcp_c->logger, tcp_c->mem, tcp_c->mono_time, tcp_c->rng, tcp_c->ns, &tcp_con->ip_port,
-                              tcp_con->relay_pk, tcp_c->self_public_key, tcp_c->self_secret_key, &tcp_c->proxy_info);
+                              tcp_con->relay_pk, tcp_c->self_public_key, tcp_c->self_secret_key, &tcp_c->proxy_info, &tcp_c->net_profile);
 
     if (tcp_con->connection == nullptr) {
         kill_tcp_relay_connection(tcp_c, tcp_connections_number);
@@ -1315,7 +1320,7 @@ static int add_tcp_relay_instance(TCP_Connections *tcp_c, const IP_Port *ip_port
 
     tcp_con->connection = new_tcp_connection(
                               tcp_c->logger, tcp_c->mem, tcp_c->mono_time, tcp_c->rng, tcp_c->ns, &ipp_copy,
-                              relay_pk, tcp_c->self_public_key, tcp_c->self_secret_key, &tcp_c->proxy_info);
+                              relay_pk, tcp_c->self_public_key, tcp_c->self_secret_key, &tcp_c->proxy_info, &tcp_c->net_profile);
 
     if (tcp_con->connection == nullptr) {
         return -1;
@@ -1727,3 +1732,12 @@ void kill_tcp_connections(TCP_Connections *tcp_c)
     mem_delete(tcp_c->mem, tcp_c->connections);
     mem_delete(tcp_c->mem, tcp_c);
 }
+
+const Net_Profile *tcp_connection_get_client_net_profile(const TCP_Connections *tcp_c)
+{
+    if (tcp_c == nullptr) {
+        return nullptr;
+    }
+
+    return &tcp_c->net_profile;
+}
diff --git a/toxcore/TCP_connection.h b/toxcore/TCP_connection.h
index 2d35919f10..8d0de32a2b 100644
--- a/toxcore/TCP_connection.h
+++ b/toxcore/TCP_connection.h
@@ -21,6 +21,7 @@
 #include "logger.h"
 #include "mem.h"
 #include "mono_time.h"
+#include "net_profile.h"
 #include "network.h"
 
 #define TCP_CONN_NONE 0
@@ -317,4 +318,11 @@ void do_tcp_connections(const Logger *logger, TCP_Connections *tcp_c, void *user
 nullable(1)
 void kill_tcp_connections(TCP_Connections *tcp_c);
 
+/** @brief a pointer to the tcp client net profile associated with tcp_c.
+ *
+ * @retval null if tcp_c is null.
+ */
+non_null()
+const Net_Profile *tcp_connection_get_client_net_profile(const TCP_Connections *tcp_c);
+
 #endif /* C_TOXCORE_TOXCORE_TCP_CONNECTION_H */
diff --git a/toxcore/TCP_server.c b/toxcore/TCP_server.c
index 1363d90220..8daee4101d 100644
--- a/toxcore/TCP_server.c
+++ b/toxcore/TCP_server.c
@@ -27,6 +27,7 @@
 #include "logger.h"
 #include "mem.h"
 #include "mono_time.h"
+#include "net_profile.h"
 #include "network.h"
 #include "onion.h"
 
@@ -91,6 +92,9 @@ struct TCP_Server {
     uint64_t counter;
 
     BS_List accepted_key_list;
+
+    /* Network profile for all TCP server packets. */
+    Net_Profile net_profile;
 };
 
 static_assert(sizeof(TCP_Server) < 7 * 1024 * 1024,
@@ -236,6 +240,7 @@ static int add_accepted(TCP_Server *tcp_server, const Mono_Time *mono_time, TCP_
     tcp_server->accepted_connection_array[index].identifier = ++tcp_server->counter;
     tcp_server->accepted_connection_array[index].last_pinged = mono_time_get(mono_time);
     tcp_server->accepted_connection_array[index].ping_id = 0;
+    tcp_server->accepted_connection_array[index].con.net_profile = &tcp_server->net_profile;
 
     return index;
 }
@@ -357,7 +362,7 @@ static int handle_tcp_handshake(const Logger *logger, TCP_Secure_Connection *con
 
     const IP_Port ipp = {{{0}}};
 
-    if (TCP_SERVER_HANDSHAKE_SIZE != net_send(con->con.ns, logger, con->con.sock, response, TCP_SERVER_HANDSHAKE_SIZE, &ipp)) {
+    if (TCP_SERVER_HANDSHAKE_SIZE != net_send(con->con.ns, logger, con->con.sock, response, TCP_SERVER_HANDSHAKE_SIZE, &ipp, con->con.net_profile)) {
         crypto_memzero(shared_key, sizeof(shared_key));
         return -1;
     }
@@ -680,6 +685,7 @@ static int handle_tcp_packet(TCP_Server *tcp_server, uint32_t con_id, const uint
     }
 
     TCP_Secure_Connection *const con = &tcp_server->accepted_connection_array[con_id];
+    netprof_record_packet(con->con.net_profile, data[0], length, PACKET_DIRECTION_RECV);
 
     switch (data[0]) {
         case TCP_PACKET_ROUTING_REQUEST: {
@@ -1425,3 +1431,12 @@ void kill_tcp_server(TCP_Server *tcp_server)
     mem_delete(tcp_server->mem, tcp_server->socks_listening);
     mem_delete(tcp_server->mem, tcp_server);
 }
+
+const Net_Profile *tcp_server_get_net_profile(const TCP_Server *tcp_server)
+{
+    if (tcp_server == nullptr) {
+        return nullptr;
+    }
+
+    return &tcp_server->net_profile;
+}
diff --git a/toxcore/TCP_server.h b/toxcore/TCP_server.h
index 1d3933a415..b20c5e1c94 100644
--- a/toxcore/TCP_server.h
+++ b/toxcore/TCP_server.h
@@ -15,6 +15,7 @@
 #include "logger.h"
 #include "mem.h"
 #include "mono_time.h"
+#include "net_profile.h"
 #include "network.h"
 #include "onion.h"
 
@@ -52,4 +53,11 @@ void do_tcp_server(TCP_Server *tcp_server, const Mono_Time *mono_time);
 nullable(1)
 void kill_tcp_server(TCP_Server *tcp_server);
 
+/** @brief Returns a pointer to the net profile associated with `tcp_server`.
+ *
+ * Returns null if `tcp_server` is null.
+ */
+nullable(1)
+const Net_Profile *tcp_server_get_net_profile(const TCP_Server *tcp_server);
+
 #endif /* C_TOXCORE_TOXCORE_TCP_SERVER_H */
diff --git a/toxcore/forwarding.c b/toxcore/forwarding.c
index 18ff3203fc..1c45510753 100644
--- a/toxcore/forwarding.c
+++ b/toxcore/forwarding.c
@@ -43,7 +43,7 @@ DHT *forwarding_get_dht(const Forwarding *forwarding)
 
 #define SENDBACK_TIMEOUT 3600
 
-bool send_forward_request(const Networking_Core *net, const IP_Port *forwarder,
+bool send_forward_request(Networking_Core *net, const IP_Port *forwarder,
                           const uint8_t *chain_keys, uint16_t chain_length,
                           const uint8_t *data, uint16_t data_length)
 {
@@ -321,7 +321,7 @@ static int handle_forwarding(void *object, const IP_Port *source, const uint8_t
     }
 }
 
-bool forward_reply(const Networking_Core *net, const IP_Port *forwarder,
+bool forward_reply(Networking_Core *net, const IP_Port *forwarder,
                    const uint8_t *sendback, uint16_t sendback_length,
                    const uint8_t *data, uint16_t length)
 {
diff --git a/toxcore/forwarding.h b/toxcore/forwarding.h
index bd0ef09e1c..e3f3ff1f02 100644
--- a/toxcore/forwarding.h
+++ b/toxcore/forwarding.h
@@ -45,7 +45,7 @@ DHT *forwarding_get_dht(const Forwarding *forwarding);
  * @return true on success, false otherwise.
  */
 non_null()
-bool send_forward_request(const Networking_Core *net, const IP_Port *forwarder,
+bool send_forward_request(Networking_Core *net, const IP_Port *forwarder,
                           const uint8_t *chain_keys, uint16_t chain_length,
                           const uint8_t *data, uint16_t data_length);
 
@@ -79,7 +79,7 @@ bool create_forward_chain_packet(const uint8_t *chain_keys, uint16_t chain_lengt
  * @return true on success, false otherwise.
  */
 non_null()
-bool forward_reply(const Networking_Core *net, const IP_Port *forwarder,
+bool forward_reply(Networking_Core *net, const IP_Port *forwarder,
                    const uint8_t *sendback, uint16_t sendback_length,
                    const uint8_t *data, uint16_t length);
 
diff --git a/toxcore/net_crypto.c b/toxcore/net_crypto.c
index 1680b078b7..52cbfd2f20 100644
--- a/toxcore/net_crypto.c
+++ b/toxcore/net_crypto.c
@@ -23,6 +23,7 @@
 #include "logger.h"
 #include "mem.h"
 #include "mono_time.h"
+#include "net_profile.h"
 #include "network.h"
 #include "util.h"
 
@@ -3227,3 +3228,18 @@ void kill_net_crypto(Net_Crypto *c)
     crypto_memzero(c, sizeof(Net_Crypto));
     mem_delete(mem, c);
 }
+
+const Net_Profile *nc_get_tcp_client_net_profile(const Net_Crypto *c)
+{
+    if (c == nullptr) {
+        return nullptr;
+    }
+
+    const TCP_Connections *tcp_c = nc_get_tcp_c(c);
+
+    if (tcp_c == nullptr) {
+        return nullptr;
+    }
+
+    return tcp_connection_get_client_net_profile(tcp_c);
+}
diff --git a/toxcore/net_crypto.h b/toxcore/net_crypto.h
index 0d817e4315..06db4c40e3 100644
--- a/toxcore/net_crypto.h
+++ b/toxcore/net_crypto.h
@@ -20,6 +20,7 @@
 #include "logger.h"
 #include "mem.h"
 #include "mono_time.h"
+#include "net_profile.h"
 #include "network.h"
 
 /*** Crypto payloads. */
@@ -418,4 +419,11 @@ void do_net_crypto(Net_Crypto *c, void *userdata);
 nullable(1)
 void kill_net_crypto(Net_Crypto *c);
 
+/**
+ * Returns a pointer to the net profile object for the TCP client associated with `c`.
+ * Returns null if `c` is null or the TCP_Connections associated with `c` is null.
+ */
+non_null()
+const Net_Profile *nc_get_tcp_client_net_profile(const Net_Crypto *c);
+
 #endif /* C_TOXCORE_TOXCORE_NET_CRYPTO_H */
diff --git a/toxcore/net_profile.c b/toxcore/net_profile.c
new file mode 100644
index 0000000000..2505d95c2d
--- /dev/null
+++ b/toxcore/net_profile.c
@@ -0,0 +1,121 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright © 2023 The TokTok team.
+ */
+
+/**
+ * Functions for the network profile.
+ */
+
+#include "net_profile.h"
+
+#include <stdint.h>
+
+#include "attributes.h"
+#include "ccompat.h"
+
+#define NETPROF_TCP_DATA_PACKET_ID 0x10
+
+/** Returns the number of sent or received packets for all ID's between `start_id` and `end_id`. */
+nullable(1)
+static uint64_t netprof_get_packet_count_id_range(const Net_Profile *profile, uint8_t start_id, uint8_t end_id,
+        Packet_Direction dir)
+{
+    if (profile == nullptr) {
+        return 0;
+    }
+
+    const uint64_t *arr = dir == PACKET_DIRECTION_SENT ? profile->packets_sent : profile->packets_recv;
+    uint64_t count = 0;
+
+    for (size_t i = start_id; i <= end_id; ++i) {
+        count += arr[i];
+    }
+
+    return count;
+}
+
+/** Returns the number of sent or received bytes for all ID's between `start_id` and `end_id`. */
+nullable(1)
+static uint64_t netprof_get_bytes_id_range(const Net_Profile *profile, uint8_t start_id, uint8_t end_id,
+        Packet_Direction dir)
+{
+    if (profile == nullptr) {
+        return 0;
+    }
+
+    const uint64_t *arr = dir == PACKET_DIRECTION_SENT ? profile->bytes_sent : profile->bytes_recv;
+    uint64_t bytes = 0;
+
+    for (size_t i = start_id; i <= end_id; ++i) {
+        bytes += arr[i];
+    }
+
+    return bytes;
+}
+
+void netprof_record_packet(Net_Profile *profile, uint8_t id, size_t length, Packet_Direction dir)
+{
+    if (profile == nullptr) {
+        return;
+    }
+
+    if (dir == PACKET_DIRECTION_SENT) {
+        ++profile->total_packets_sent;
+        ++profile->packets_sent[id];
+
+        profile->total_bytes_sent += length;
+        profile->bytes_sent[id] += length;
+    } else {
+        ++profile->total_packets_recv;
+        ++profile->packets_recv[id];
+
+        profile->total_bytes_recv += length;
+        profile->bytes_recv[id] += length;
+    }
+}
+
+uint64_t netprof_get_packet_count_id(const Net_Profile *profile, uint8_t id, Packet_Direction dir)
+{
+    if (profile == nullptr) {
+        return 0;
+    }
+
+    // Special case - TCP data packets can have any ID between 0x10 and 0xff
+    if (id == NETPROF_TCP_DATA_PACKET_ID) {
+        return netprof_get_packet_count_id_range(profile, id, UINT8_MAX, dir);
+    }
+
+    return dir == PACKET_DIRECTION_SENT ? profile->packets_sent[id] : profile->packets_recv[id];
+}
+
+uint64_t netprof_get_packet_count_total(const Net_Profile *profile, Packet_Direction dir)
+{
+    if (profile == nullptr) {
+        return 0;
+    }
+
+    return dir == PACKET_DIRECTION_SENT ? profile->total_packets_sent : profile->total_packets_recv;
+}
+
+uint64_t netprof_get_bytes_id(const Net_Profile *profile, uint8_t id, Packet_Direction dir)
+{
+    if (profile == nullptr) {
+        return 0;
+    }
+
+    // Special case - TCP data packets can have any ID between 0x10 and 0xff
+    if (id == NETPROF_TCP_DATA_PACKET_ID) {
+        return netprof_get_bytes_id_range(profile, id, 0xff, dir);
+    }
+
+    return dir == PACKET_DIRECTION_SENT ? profile->bytes_sent[id] : profile->bytes_recv[id];
+}
+
+uint64_t netprof_get_bytes_total(const Net_Profile *profile, Packet_Direction dir)
+{
+    if (profile == nullptr) {
+        return 0;
+    }
+
+    return dir == PACKET_DIRECTION_SENT ? profile->total_bytes_sent : profile->total_bytes_recv;
+}
diff --git a/toxcore/net_profile.h b/toxcore/net_profile.h
new file mode 100644
index 0000000000..3c40ffffa2
--- /dev/null
+++ b/toxcore/net_profile.h
@@ -0,0 +1,69 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright © 2023 The TokTok team.
+ */
+
+/**
+ * Functions for the network profile.
+ */
+#ifndef C_TOXCORE_TOXCORE_NET_PROFILE_H
+#define C_TOXCORE_TOXCORE_NET_PROFILE_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "attributes.h"
+
+/* The max number of packet ID's (must fit inside one byte) */
+#define NET_PROF_MAX_PACKET_IDS 256
+
+typedef struct Net_Profile {
+    uint64_t packets_recv[NET_PROF_MAX_PACKET_IDS];
+    uint64_t packets_sent[NET_PROF_MAX_PACKET_IDS];
+
+    uint64_t total_packets_recv;
+    uint64_t total_packets_sent;
+
+    uint64_t bytes_recv[NET_PROF_MAX_PACKET_IDS];
+    uint64_t bytes_sent[NET_PROF_MAX_PACKET_IDS];
+
+    uint64_t total_bytes_recv;
+    uint64_t total_bytes_sent;
+} Net_Profile;
+
+/** Specifies whether the query is for sent or received packets. */
+typedef enum Packet_Direction {
+    PACKET_DIRECTION_SENT,
+    PACKET_DIRECTION_RECV,
+} Packet_Direction;
+
+/**
+ * Records a sent or received packet of type `id` and size `length` to the given profile.
+ */
+nullable(1)
+void netprof_record_packet(Net_Profile *profile, uint8_t id, size_t length, Packet_Direction dir);
+
+/**
+ * Returns the number of sent or received packets of type `id` for the given profile.
+ */
+nullable(1)
+uint64_t netprof_get_packet_count_id(const Net_Profile *profile, uint8_t id, Packet_Direction dir);
+
+/**
+ * Returns the total number of sent or received packets for the given profile.
+ */
+nullable(1)
+uint64_t netprof_get_packet_count_total(const Net_Profile *profile, Packet_Direction dir);
+
+/**
+ * Returns the number of bytes sent or received of packet type `id` for the given profile.
+ */
+nullable(1)
+uint64_t netprof_get_bytes_id(const Net_Profile *profile, uint8_t id, Packet_Direction dir);
+
+/**
+ * Returns the total number of bytes sent or received for the given profile.
+ */
+nullable(1)
+uint64_t netprof_get_bytes_total(const Net_Profile *profile, Packet_Direction dir);
+
+#endif  /* C_TOXCORE_TOXCORE_NET_PROFILE_H */
diff --git a/toxcore/network.c b/toxcore/network.c
index 55aa4e2818..775a90b9bd 100644
--- a/toxcore/network.c
+++ b/toxcore/network.c
@@ -86,6 +86,7 @@
 #include "ccompat.h"
 #include "logger.h"
 #include "mem.h"
+#include "net_profile.h"
 #include "util.h"
 
 // Disable MSG_NOSIGNAL on systems not supporting it, e.g. Windows, FreeBSD
@@ -812,9 +813,15 @@ static void loglogdata(const Logger *log, const char *message, const uint8_t *bu
 }
 
 int net_send(const Network *ns, const Logger *log,
-             Socket sock, const uint8_t *buf, size_t len, const IP_Port *ip_port)
+             Socket sock, const uint8_t *buf, size_t len, const IP_Port *ip_port, Net_Profile *net_profile)
 {
     const int res = ns->funcs->send(ns->obj, sock, buf, len);
+
+    if (buf != nullptr && res == len) {
+        const uint8_t *data = buf;
+        netprof_record_packet(net_profile, data[0], len, PACKET_DIRECTION_SENT);
+    }
+
     loglogdata(log, "T=>", buf, len, ip_port, res);
     return res;
 }
@@ -914,6 +921,8 @@ struct Networking_Core {
     uint16_t port;
     /* Our UDP socket. */
     Socket sock;
+
+    Net_Profile udp_net_profile;
 };
 
 Family net_family(const Networking_Core *net)
@@ -929,7 +938,7 @@ uint16_t net_port(const Networking_Core *net)
 /* Basic network functions:
  */
 
-int send_packet(const Networking_Core *net, const IP_Port *ip_port, Packet packet)
+int send_packet(Networking_Core *net, const IP_Port *ip_port, Packet packet)
 {
     IP_Port ipp_copy = *ip_port;
 
@@ -999,6 +1008,11 @@ int send_packet(const Networking_Core *net, const IP_Port *ip_port, Packet packe
     loglogdata(net->log, "O=>", packet.data, packet.length, ip_port, res);
 
     assert(res <= INT_MAX);
+
+    if (res == packet.length) {
+        netprof_record_packet(&net->udp_net_profile, packet.data[0], packet.length, PACKET_DIRECTION_SENT);
+    }
+
     return (int)res;
 }
 
@@ -1007,7 +1021,7 @@ int send_packet(const Networking_Core *net, const IP_Port *ip_port, Packet packe
  *
  * @deprecated Use send_packet instead.
  */
-int sendpacket(const Networking_Core *net, const IP_Port *ip_port, const uint8_t *data, uint16_t length)
+int sendpacket(Networking_Core *net, const IP_Port *ip_port, const uint8_t *data, uint16_t length)
 {
     const Packet packet = {data, length};
     return send_packet(net, ip_port, packet);
@@ -1087,7 +1101,7 @@ void networking_registerhandler(Networking_Core *net, uint8_t byte, packet_handl
     net->packethandlers[byte].object = object;
 }
 
-void networking_poll(const Networking_Core *net, void *userdata)
+void networking_poll(Networking_Core *net, void *userdata)
 {
     if (net_family_is_unspec(net->family)) {
         /* Socket not initialized */
@@ -1103,6 +1117,8 @@ void networking_poll(const Networking_Core *net, void *userdata)
             continue;
         }
 
+        netprof_record_packet(&net->udp_net_profile, data[0], length, PACKET_DIRECTION_RECV);
+
         const Packet_Handler *const handler = &net->packethandlers[data[0]];
 
         if (handler->function == nullptr) {
@@ -2296,3 +2312,12 @@ void net_kill_strerror(char *strerror)
     free(strerror);
 #endif /* OS_WIN32 */
 }
+
+const Net_Profile *net_get_net_profile(const Networking_Core *net)
+{
+    if (net == nullptr) {
+        return nullptr;
+    }
+
+    return &net->udp_net_profile;
+}
diff --git a/toxcore/network.h b/toxcore/network.h
index 06857b8917..e7bfaeb5c0 100644
--- a/toxcore/network.h
+++ b/toxcore/network.h
@@ -17,6 +17,7 @@
 #include "bin_pack.h"
 #include "logger.h"
 #include "mem.h"
+#include "net_profile.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -234,8 +235,9 @@ Socket net_invalid_socket(void);
 /**
  * Calls send(sockfd, buf, len, MSG_NOSIGNAL).
  */
-non_null()
-int net_send(const Network *ns, const Logger *log, Socket sock, const uint8_t *buf, size_t len, const IP_Port *ip_port);
+non_null(1, 2, 4, 6) nullable(7)
+int net_send(const Network *ns, const Logger *log, Socket sock, const uint8_t *buf, size_t len, const IP_Port *ip_port,
+             Net_Profile *net_profile);
 /**
  * Calls recv(sockfd, buf, len, MSG_NOSIGNAL).
  */
@@ -477,7 +479,7 @@ typedef struct Packet {
  * Function to send a network packet to a given IP/port.
  */
 non_null()
-int send_packet(const Networking_Core *net, const IP_Port *ip_port, Packet packet);
+int send_packet(Networking_Core *net, const IP_Port *ip_port, Packet packet);
 
 /**
  * Function to send packet(data) of length length to ip_port.
@@ -485,7 +487,7 @@ int send_packet(const Networking_Core *net, const IP_Port *ip_port, Packet packe
  * @deprecated Use send_packet instead.
  */
 non_null()
-int sendpacket(const Networking_Core *net, const IP_Port *ip_port, const uint8_t *data, uint16_t length);
+int sendpacket(Networking_Core *net, const IP_Port *ip_port, const uint8_t *data, uint16_t length);
 
 /** Function to call when packet beginning with byte is received. */
 non_null(1) nullable(3, 4)
@@ -493,7 +495,7 @@ void networking_registerhandler(Networking_Core *net, uint8_t byte, packet_handl
 
 /** Call this several times a second. */
 non_null(1) nullable(2)
-void networking_poll(const Networking_Core *net, void *userdata);
+void networking_poll(Networking_Core *net, void *userdata);
 
 /** @brief Connect a socket to the address specified by the ip_port.
  *
@@ -603,6 +605,13 @@ Networking_Core *new_networking_no_udp(const Logger *log, const Memory *mem, con
 nullable(1)
 void kill_networking(Networking_Core *net);
 
+/** @brief Returns a pointer to the network net_profile object associated with `net`.
+ *
+ * Returns null if `net` is null.
+ */
+non_null()
+const Net_Profile *net_get_net_profile(const Networking_Core *net);
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif
diff --git a/toxcore/onion.c b/toxcore/onion.c
index 9fab57af90..175169a897 100644
--- a/toxcore/onion.c
+++ b/toxcore/onion.c
@@ -292,7 +292,7 @@ int create_onion_packet_tcp(const Random *rng, uint8_t *packet, uint16_t max_pac
  * return -1 on failure.
  * return 0 on success.
  */
-int send_onion_response(const Logger *log, const Networking_Core *net,
+int send_onion_response(const Logger *log, Networking_Core *net,
                         const IP_Port *dest, const uint8_t *data, uint16_t length,
                         const uint8_t *ret)
 {
diff --git a/toxcore/onion.h b/toxcore/onion.h
index a5d3554e7b..7394fb89bc 100644
--- a/toxcore/onion.h
+++ b/toxcore/onion.h
@@ -130,7 +130,7 @@ int create_onion_packet_tcp(const Random *rng, uint8_t *packet, uint16_t max_pac
  * return 0 on success.
  */
 non_null()
-int send_onion_response(const Logger *log, const Networking_Core *net,
+int send_onion_response(const Logger *log, Networking_Core *net,
                         const IP_Port *dest, const uint8_t *data, uint16_t length,
                         const uint8_t *ret);
 
diff --git a/toxcore/onion_announce.c b/toxcore/onion_announce.c
index 593d81aa2c..8a34c4193a 100644
--- a/toxcore/onion_announce.c
+++ b/toxcore/onion_announce.c
@@ -193,7 +193,7 @@ int create_data_request(const Random *rng, uint8_t *packet, uint16_t max_packet_
  * return 0 on success.
  */
 int send_announce_request(
-    const Logger *log, const Networking_Core *net, const Random *rng,
+    const Logger *log, Networking_Core *net, const Random *rng,
     const Onion_Path *path, const Node_format *dest,
     const uint8_t *public_key, const uint8_t *secret_key,
     const uint8_t *ping_id, const uint8_t *client_id,
@@ -238,7 +238,7 @@ int send_announce_request(
  * return 0 on success.
  */
 int send_data_request(
-    const Logger *log, const Networking_Core *net, const Random *rng, const Onion_Path *path, const IP_Port *dest,
+    const Logger *log, Networking_Core *net, const Random *rng, const Onion_Path *path, const IP_Port *dest,
     const uint8_t *public_key, const uint8_t *encrypt_public_key, const uint8_t *nonce,
     const uint8_t *data, uint16_t length)
 {
diff --git a/toxcore/onion_announce.h b/toxcore/onion_announce.h
index 1158093170..b5f9cf559f 100644
--- a/toxcore/onion_announce.h
+++ b/toxcore/onion_announce.h
@@ -101,7 +101,7 @@ int create_data_request(const Random *rng, uint8_t *packet, uint16_t max_packet_
  */
 non_null()
 int send_announce_request(
-    const Logger *log, const Networking_Core *net, const Random *rng,
+    const Logger *log, Networking_Core *net, const Random *rng,
     const Onion_Path *path, const Node_format *dest,
     const uint8_t *public_key, const uint8_t *secret_key,
     const uint8_t *ping_id, const uint8_t *client_id,
@@ -125,7 +125,7 @@ int send_announce_request(
  */
 non_null()
 int send_data_request(
-    const Logger *log, const Networking_Core *net, const Random *rng, const Onion_Path *path, const IP_Port *dest,
+    const Logger *log, Networking_Core *net, const Random *rng, const Onion_Path *path, const IP_Port *dest,
     const uint8_t *public_key, const uint8_t *encrypt_public_key, const uint8_t *nonce,
     const uint8_t *data, uint16_t length);
 
diff --git a/toxcore/tox.c b/toxcore/tox.c
index 03e34414a8..652db6b737 100644
--- a/toxcore/tox.c
+++ b/toxcore/tox.c
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: GPL-3.0-or-later
- * Copyright © 2016-2018 The TokTok team.
+ * Copyright © 2016-2024 The TokTok team.
  * Copyright © 2013 Tox project.
  */
 
@@ -18,6 +18,7 @@
 #include "DHT.h"
 #include "Messenger.h"
 #include "TCP_client.h"
+#include "TCP_server.h"
 #include "attributes.h"
 #include "ccompat.h"
 #include "crypto_core.h"
diff --git a/toxcore/tox_private.c b/toxcore/tox_private.c
index 7b6050a9f8..dfab730e91 100644
--- a/toxcore/tox_private.c
+++ b/toxcore/tox_private.c
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: GPL-3.0-or-later
- * Copyright © 2016-2022 The TokTok team.
+ * Copyright © 2016-2024 The TokTok team.
  * Copyright © 2013 Tox project.
  */
 
@@ -11,13 +11,16 @@
 #include <assert.h>
 
 #include "DHT.h"
+#include "TCP_server.h"
 #include "attributes.h"
 #include "ccompat.h"
 #include "crypto_core.h"
 #include "group_chats.h"
 #include "group_common.h"
+#include "logger.h"
 #include "mem.h"
 #include "net_crypto.h"
+#include "net_profile.h"
 #include "network.h"
 #include "tox.h"
 #include "tox_struct.h"
@@ -226,3 +229,199 @@ bool tox_group_peer_get_ip_address(const Tox *tox, uint32_t group_number, uint32
     SET_ERROR_PARAMETER(error, TOX_ERR_GROUP_PEER_QUERY_OK);
     return true;
 }
+
+uint64_t tox_netprof_get_packet_id_count(const Tox *tox, Tox_Netprof_Packet_Type type, uint8_t id,
+        Tox_Netprof_Direction direction)
+{
+    assert(tox != nullptr);
+
+    tox_lock(tox);
+
+    const Net_Profile *tcp_c_profile = nc_get_tcp_client_net_profile(tox->m->net_crypto);
+    const Net_Profile *tcp_s_profile = tcp_server_get_net_profile(tox->m->tcp_server);
+
+    const Packet_Direction dir = (Packet_Direction) direction;
+
+    uint64_t count = 0;
+
+    switch (type) {
+        case TOX_NETPROF_PACKET_TYPE_TCP_CLIENT: {
+            count = netprof_get_packet_count_id(tcp_c_profile, id, dir);
+            break;
+        }
+
+        case TOX_NETPROF_PACKET_TYPE_TCP_SERVER: {
+            count = netprof_get_packet_count_id(tcp_s_profile, id, dir);
+            break;
+        }
+
+        case TOX_NETPROF_PACKET_TYPE_TCP: {
+            const uint64_t tcp_c_count = netprof_get_packet_count_id(tcp_c_profile, id, dir);
+            const uint64_t tcp_s_count = netprof_get_packet_count_id(tcp_s_profile, id, dir);
+            count = tcp_c_count + tcp_s_count;
+            break;
+        }
+
+        case TOX_NETPROF_PACKET_TYPE_UDP: {
+            const Net_Profile *udp_profile = net_get_net_profile(tox->m->net);
+            count = netprof_get_packet_count_id(udp_profile, id, dir);
+            break;
+        }
+
+        default: {
+            LOGGER_ERROR(tox->m->log, "invalid packet type: %d", type);
+            break;
+        }
+    }
+
+    tox_unlock(tox);
+
+    return count;
+}
+
+uint64_t tox_netprof_get_packet_total_count(const Tox *tox, Tox_Netprof_Packet_Type type,
+        Tox_Netprof_Direction direction)
+{
+    assert(tox != nullptr);
+
+    tox_lock(tox);
+
+    const Net_Profile *tcp_c_profile = nc_get_tcp_client_net_profile(tox->m->net_crypto);
+    const Net_Profile *tcp_s_profile = tcp_server_get_net_profile(tox->m->tcp_server);
+
+    const Packet_Direction dir = (Packet_Direction) direction;
+
+    uint64_t count = 0;
+
+    switch (type) {
+        case TOX_NETPROF_PACKET_TYPE_TCP_CLIENT: {
+            count = netprof_get_packet_count_total(tcp_c_profile, dir);
+            break;
+        }
+
+        case TOX_NETPROF_PACKET_TYPE_TCP_SERVER: {
+            count = netprof_get_packet_count_total(tcp_s_profile, dir);
+            break;
+        }
+
+        case TOX_NETPROF_PACKET_TYPE_TCP: {
+            const uint64_t tcp_c_count = netprof_get_packet_count_total(tcp_c_profile, dir);
+            const uint64_t tcp_s_count = netprof_get_packet_count_total(tcp_s_profile, dir);
+            count = tcp_c_count + tcp_s_count;
+            break;
+        }
+
+        case TOX_NETPROF_PACKET_TYPE_UDP: {
+            const Net_Profile *udp_profile = net_get_net_profile(tox->m->net);
+            count = netprof_get_packet_count_total(udp_profile, dir);
+            break;
+        }
+
+        default: {
+            LOGGER_ERROR(tox->m->log, "invalid packet type: %d", type);
+            break;
+        }
+    }
+
+    tox_unlock(tox);
+
+    return count;
+}
+
+uint64_t tox_netprof_get_packet_id_bytes(const Tox *tox, Tox_Netprof_Packet_Type type, uint8_t id,
+        Tox_Netprof_Direction direction)
+{
+    assert(tox != nullptr);
+
+    tox_lock(tox);
+
+    const Net_Profile *tcp_c_profile = nc_get_tcp_client_net_profile(tox->m->net_crypto);
+    const Net_Profile *tcp_s_profile = tcp_server_get_net_profile(tox->m->tcp_server);
+
+    const Packet_Direction dir = (Packet_Direction) direction;
+
+    uint64_t bytes = 0;
+
+    switch (type) {
+        case TOX_NETPROF_PACKET_TYPE_TCP_CLIENT: {
+            bytes = netprof_get_bytes_id(tcp_c_profile, id, dir);
+            break;
+        }
+
+        case TOX_NETPROF_PACKET_TYPE_TCP_SERVER: {
+            bytes = netprof_get_bytes_id(tcp_s_profile, id, dir);
+            break;
+        }
+
+        case TOX_NETPROF_PACKET_TYPE_TCP: {
+            const uint64_t tcp_c_bytes = netprof_get_bytes_id(tcp_c_profile, id, dir);
+            const uint64_t tcp_s_bytes = netprof_get_bytes_id(tcp_s_profile, id, dir);
+            bytes = tcp_c_bytes + tcp_s_bytes;
+            break;
+        }
+
+        case TOX_NETPROF_PACKET_TYPE_UDP: {
+            const Net_Profile *udp_profile = net_get_net_profile(tox->m->net);
+            bytes = netprof_get_bytes_id(udp_profile, id, dir);
+            break;
+        }
+
+        default: {
+            LOGGER_ERROR(tox->m->log, "invalid packet type: %d", type);
+            break;
+        }
+    }
+
+    tox_unlock(tox);
+
+    return bytes;
+}
+
+uint64_t tox_netprof_get_packet_total_bytes(const Tox *tox, Tox_Netprof_Packet_Type type,
+        Tox_Netprof_Direction direction)
+{
+    assert(tox != nullptr);
+
+    tox_lock(tox);
+
+    const Net_Profile *tcp_c_profile = nc_get_tcp_client_net_profile(tox->m->net_crypto);
+    const Net_Profile *tcp_s_profile = tcp_server_get_net_profile(tox->m->tcp_server);
+
+    const Packet_Direction dir = (Packet_Direction) direction;
+
+    uint64_t bytes = 0;
+
+    switch (type) {
+        case TOX_NETPROF_PACKET_TYPE_TCP_CLIENT: {
+            bytes = netprof_get_bytes_total(tcp_c_profile, dir);
+            break;
+        }
+
+        case TOX_NETPROF_PACKET_TYPE_TCP_SERVER: {
+            bytes = netprof_get_bytes_total(tcp_s_profile, dir);
+            break;
+        }
+
+        case TOX_NETPROF_PACKET_TYPE_TCP: {
+            const uint64_t tcp_c_bytes = netprof_get_bytes_total(tcp_c_profile, dir);
+            const uint64_t tcp_s_bytes = netprof_get_bytes_total(tcp_s_profile, dir);
+            bytes = tcp_c_bytes + tcp_s_bytes;
+            break;
+        }
+
+        case TOX_NETPROF_PACKET_TYPE_UDP: {
+            const Net_Profile *udp_profile = net_get_net_profile(tox->m->net);
+            bytes = netprof_get_bytes_total(udp_profile, dir);
+            break;
+        }
+
+        default: {
+            LOGGER_ERROR(tox->m->log, "invalid packet type: %d", type);
+            break;
+        }
+    }
+
+    tox_unlock(tox);
+
+    return bytes;
+}
diff --git a/toxcore/tox_private.h b/toxcore/tox_private.h
index fe86479a5d..b9ad343e3e 100644
--- a/toxcore/tox_private.h
+++ b/toxcore/tox_private.h
@@ -171,6 +171,254 @@ uint16_t tox_dht_get_num_closelist(const Tox *tox);
  */
 uint16_t tox_dht_get_num_closelist_announce_capable(const Tox *tox);
 
+/*******************************************************************************
+ *
+ * :: Network profiler
+ *
+ ******************************************************************************/
+
+
+/**
+ * Represents all of the network packet identifiers that Toxcore uses.
+ *
+ * Note: Some packet ID's have different purposes depending on the
+ * packet type. These ID's are given numeral names.
+ */
+typedef enum Tox_Netprof_Packet_Id {
+    /**
+     * Ping request packet (UDP).
+     * Routing request (TCP).
+     */
+    TOX_NETPROF_PACKET_ID_ZERO                 = 0x00,
+
+    /**
+     * Ping response packet (UDP).
+     * Routing response (TCP).
+     */
+    TOX_NETPROF_PACKET_ID_ONE                  = 0x01,
+
+    /**
+     * Get nodes request packet (UDP).
+     * Connection notification (TCP).
+     */
+    TOX_NETPROF_PACKET_ID_TWO                  = 0x02,
+
+    /**
+     * TCP disconnect notification.
+     */
+    TOX_NETPROF_PACKET_ID_TCP_DISCONNECT       = 0x03,
+
+    /**
+     * Send nodes response packet (UDP).
+     * Ping packet (TCP).
+     */
+    TOX_NETPROF_PACKET_ID_FOUR                 = 0x04,
+
+    /**
+     * TCP pong packet.
+     */
+    TOX_NETPROF_PACKET_ID_TCP_PONG             = 0x05,
+
+    /**
+     * TCP out-of-band send packet.
+     */
+    TOX_NETPROF_PACKET_ID_TCP_OOB_SEND         = 0x06,
+
+    /**
+     * TCP out-of-band receive packet.
+     */
+    TOX_NETPROF_PACKET_ID_TCP_OOB_RECV         = 0x07,
+
+    /**
+     * TCP onion request packet.
+     */
+    TOX_NETPROF_PACKET_ID_TCP_ONION_REQUEST    = 0x08,
+
+    /**
+     * TCP onion response packet.
+     */
+    TOX_NETPROF_PACKET_ID_TCP_ONION_RESPONSE   = 0x09,
+
+    /**
+     * TCP data packet.
+     */
+    TOX_NETPROF_PACKET_ID_TCP_DATA             = 0x10,
+
+    /**
+     * Cookie request packet.
+     */
+    TOX_NETPROF_PACKET_ID_COOKIE_REQUEST       = 0x18,
+
+    /**
+     * Cookie response packet.
+     */
+    TOX_NETPROF_PACKET_ID_COOKIE_RESPONSE      = 0x19,
+
+    /**
+     * Crypto handshake packet.
+     */
+    TOX_NETPROF_PACKET_ID_CRYPTO_HS            = 0x1a,
+
+    /**
+     * Crypto data packet.
+     */
+    TOX_NETPROF_PACKET_ID_CRYPTO_DATA          = 0x1b,
+
+    /**
+     * Encrypted data packet.
+     */
+    TOX_NETPROF_PACKET_ID_CRYPTO               = 0x20,
+
+    /**
+     * LAN discovery packet.
+     */
+    TOX_NETPROF_PACKET_ID_LAN_DISCOVERY        = 0x21,
+
+    /**
+     * DHT groupchat packets.
+     */
+    TOX_NETPROF_PACKET_ID_GC_HANDSHAKE         = 0x5a,
+    TOX_NETPROF_PACKET_ID_GC_LOSSLESS          = 0x5b,
+    TOX_NETPROF_PACKET_ID_GC_LOSSY             = 0x5c,
+
+    /**
+     * Onion send packets.
+     */
+    TOX_NETPROF_PACKET_ID_ONION_SEND_INITIAL   = 0x80,
+    TOX_NETPROF_PACKET_ID_ONION_SEND_1         = 0x81,
+    TOX_NETPROF_PACKET_ID_ONION_SEND_2         = 0x82,
+
+    /**
+     * DHT announce request packet (deprecated).
+     */
+    TOX_NETPROF_PACKET_ID_ANNOUNCE_REQUEST_OLD = 0x83,
+
+    /**
+     * DHT announce response packet (deprecated).
+     */
+    TOX_NETPROF_PACKET_ID_ANNOUNCE_RESPONSE_OLD = 0x84,
+
+    /**
+     * Onion data request packet.
+     */
+    TOX_NETPROF_PACKET_ID_ONION_DATA_REQUEST   = 0x85,
+
+    /**
+     * Onion data response packet.
+     */
+    TOX_NETPROF_PACKET_ID_ONION_DATA_RESPONSE  = 0x86,
+
+    /**
+     * DHT announce request packet.
+     */
+    TOX_NETPROF_PACKET_ID_ANNOUNCE_REQUEST     = 0x87,
+
+    /**
+     * DHT announce response packet.
+     */
+    TOX_NETPROF_PACKET_ID_ANNOUNCE_RESPONSE    = 0x88,
+
+    /**
+     * Onion receive packets.
+     */
+    TOX_NETPROF_PACKET_ID_ONION_RECV_3         = 0x8c,
+    TOX_NETPROF_PACKET_ID_ONION_RECV_2         = 0x8d,
+    TOX_NETPROF_PACKET_ID_ONION_RECV_1         = 0x8e,
+
+    TOX_NETPROF_PACKET_ID_FORWARD_REQUEST      = 0x90,
+    TOX_NETPROF_PACKET_ID_FORWARDING           = 0x91,
+    TOX_NETPROF_PACKET_ID_FORWARD_REPLY        = 0x92,
+
+    TOX_NETPROF_PACKET_ID_DATA_SEARCH_REQUEST     = 0x93,
+    TOX_NETPROF_PACKET_ID_DATA_SEARCH_RESPONSE    = 0x94,
+    TOX_NETPROF_PACKET_ID_DATA_RETRIEVE_REQUEST   = 0x95,
+    TOX_NETPROF_PACKET_ID_DATA_RETRIEVE_RESPONSE  = 0x96,
+    TOX_NETPROF_PACKET_ID_STORE_ANNOUNCE_REQUEST  = 0x97,
+    TOX_NETPROF_PACKET_ID_STORE_ANNOUNCE_RESPONSE = 0x98,
+
+    /**
+     * Bootstrap info packet.
+     */
+    TOX_NETPROF_PACKET_ID_BOOTSTRAP_INFO       = 0xf0,
+} Tox_Netprof_Packet_Id;
+
+/**
+ * Specifies the packet type for a given query.
+ */
+typedef enum Tox_Netprof_Packet_Type {
+    /**
+     * TCP client packets.
+     */
+    TOX_NETPROF_PACKET_TYPE_TCP_CLIENT,
+
+    /**
+     * TCP server packets.
+     */
+    TOX_NETPROF_PACKET_TYPE_TCP_SERVER,
+
+    /**
+     * Combined TCP server and TCP client packets.
+     */
+    TOX_NETPROF_PACKET_TYPE_TCP,
+
+    /**
+     * UDP packets.
+     */
+    TOX_NETPROF_PACKET_TYPE_UDP,
+} Tox_Netprof_Packet_Type;
+
+/**
+ * Specifies the packet direction for a given query.
+ */
+typedef enum Tox_Netprof_Direction {
+    /**
+     * Outbound packets.
+     */
+    TOX_NETPROF_DIRECTION_SENT,
+
+    /**
+     * Inbound packets.
+     */
+    TOX_NETPROF_DIRECTION_RECV,
+} Tox_Netprof_Direction;
+
+/**
+ * Return the number of packets sent or received for a specific packet ID.
+ *
+ * @param type The types of packets being queried.
+ * @param id The packet ID being queried.
+ * @param direction The packet direction.
+ */
+uint64_t tox_netprof_get_packet_id_count(const Tox *tox, Tox_Netprof_Packet_Type type, uint8_t id,
+        Tox_Netprof_Direction direction);
+
+/**
+ * Return the total number of packets sent or received.
+ *
+ * @param type The types of packets being queried.
+ * @param direction The packet direction.
+ */
+uint64_t tox_netprof_get_packet_total_count(const Tox *tox, Tox_Netprof_Packet_Type type,
+        Tox_Netprof_Direction direction);
+/**
+ * Return the number of bytes sent or received for a specific packet ID.
+ *
+ * @param type The types of packets being queried.
+ * @param id The packet ID being queried.
+ * @param direction The packet direction.
+ */
+uint64_t tox_netprof_get_packet_id_bytes(const Tox *tox, Tox_Netprof_Packet_Type type, uint8_t id,
+        Tox_Netprof_Direction direction);
+/**
+ * Return the total number of bytes sent or received.
+ *
+ * @param type The types of packets being queried.
+ * @param direction The packet direction.
+ */
+uint64_t tox_netprof_get_packet_total_bytes(const Tox *tox, Tox_Netprof_Packet_Type type,
+        Tox_Netprof_Direction direction);
+
+
 /*******************************************************************************
  *
  * :: DHT groupchat queries.