diff --git a/src/donar.c b/src/donar.c
index c62aa2e..3f211a3 100644
--- a/src/donar.c
+++ b/src/donar.c
@@ -45,10 +45,11 @@ int main(int argc, char** argv) {
       exit(EXIT_FAILURE);
     }
 
+    struct algo_skel as;
+    algo_naive (&as);
+
     if (is_server) {
       struct donar_server_ctx ctx;
-      struct algo_skel as;
-      algo_naive (&as);
       if (host == NULL || port == NULL) {
         fprintf(stderr, "You need to set a host -h and a port -p\n");
         exit(EXIT_FAILURE);
@@ -56,7 +57,12 @@ int main(int argc, char** argv) {
       printf("params: %s:%s\n", host, port);
       donar_server(&ctx, &as, host, port);
     } else if (is_client) {
-      donar_client();
+      struct donar_client_ctx ctx;
+      if (port == NULL || onion_file == NULL) {
+        fprintf(stderr, "You need to set an onion_file -o and a port -p\n");
+        exit(EXIT_FAILURE);
+      }
+      donar_client(&ctx, &as, onion_file, port);
     }
 
     free(onion_file);
diff --git a/src/donar_client.c b/src/donar_client.c
index 188c487..7f9483e 100644
--- a/src/donar_client.c
+++ b/src/donar_client.c
@@ -1 +1,34 @@
-void donar_client() {}
+#include "donar_client.h"
+
+void load_onion_services(struct donar_client_ctx* ctx, char* onion_file, int ports_count) {
+  tor_os_create (&(ctx->tos), onion_file, NULL, ports_count);
+  tor_os_read (&(ctx->tos));
+}
+
+void init_tcp_clients(struct donar_client_ctx* ctx) {
+
+}
+
+void donar_client(struct donar_client_ctx* ctx, struct algo_skel* algo, char* onion_file, char* port) {
+  evt_core_init (&(ctx->evts));
+  evt_core_add_cat (&(ctx->evts), &(algo->on_tcp_co));
+  evt_core_add_cat (&(ctx->evts), &(algo->on_udp_read));
+  evt_core_add_cat (&(ctx->evts), &(algo->on_tcp_read));
+  evt_core_add_cat (&(ctx->evts), &(algo->on_udp_write));
+  evt_core_add_cat (&(ctx->evts), &(algo->on_tcp_write));
+  printf("--- Categories created\n");
+
+  load_onion_services (ctx, onion_file, CLIENT_PORT_SIZE);
+  printf("--- Onion services loaded\n");
+
+  for (int i = 0; i < ctx->tos.filled; i++) {
+    printf("onion service: %s\n",ctx->tos.keys->pub);
+  }
+
+  for (uint16_t i = 0; i < CLIENT_PORT_SIZE ; i++) {
+    ctx->ports[i] = 7500 + i;
+  }
+
+  init_tcp_clients(ctx);
+
+}
diff --git a/src/donar_client.h b/src/donar_client.h
index 48f4823..43e8d6f 100644
--- a/src/donar_client.h
+++ b/src/donar_client.h
@@ -1,5 +1,15 @@
 #pragma once
 #include <stdio.h>
 #include <stdlib.h>
+#include "algo_skel.h"
+#include "tor_os.h"
 
-void donar_client();
+#define CLIENT_PORT_SIZE 10
+
+struct donar_client_ctx {
+  struct tor_os_str tos;
+  struct evt_core_ctx evts;
+  uint16_t ports[CLIENT_PORT_SIZE];
+};
+
+void donar_client(struct donar_client_ctx* ctx, struct algo_skel* as, char* onion_file, char* port);
diff --git a/src/tor_os.c b/src/tor_os.c
index a782f10..1d56c76 100644
--- a/src/tor_os.c
+++ b/src/tor_os.c
@@ -3,6 +3,7 @@
 void tor_os_create(struct tor_os_str* os, char* pub_file, char* priv_file, size_t size) {
     os->size = size;
     os->filled = 0;
+    os->priv_file = NULL;
 
     if (priv_file != NULL) {
       os->priv_file = malloc(sizeof(char) * (strlen(priv_file) + 1));