diff --git a/CMakeLists.txt b/CMakeLists.txt
index d89958c..6b12812 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,6 +7,9 @@ set(CMAKE_C_STANDARD 11)
 set(CMAKE_C_STANDARD_REQUIRED ON)
 
 add_compile_options(-Wall -g -O3)
+# add_compile_options(-Wall -g -O1 -fsanitize=address)
+
+# add_link_options(-fsanitize=address)
 
 set(THREADS_PREFER_PTHREAD_FLAG ON)
 find_package(Threads REQUIRED)
diff --git a/shell.nix b/shell.nix
index 0f994e2..ada4520 100644
--- a/shell.nix
+++ b/shell.nix
@@ -14,7 +14,10 @@ pkgs.mkShell {
     zstd
   ];
 
+  NIX_ENFORCE_PURITY = 0;
+
   shellHook = ''
-    ./tmux.sh
+    export NIX_ENFORCE_PURITY=0
+    cmake -B build
   '';
 }
diff --git a/src/client/client.c b/src/client/client.c
index 21c54c0..79d588e 100644
--- a/src/client/client.c
+++ b/src/client/client.c
@@ -6,6 +6,8 @@
 
 #include "chunk.h"
 #include "config.h"
+#include "data.h"
+#include "file.h"
 #include "log.h"
 #include "multiprocessing.h"
 #include "queue.h"
@@ -15,13 +17,19 @@
 #include <dirent.h>
 
 int send_chunk(Client *client, Chunk *chunk, Config *config) {
-  if (config->use_compression) {
+  if (config->use_compression && config->use_chunk_serialization) {
     Data *data = chunk_compress(chunk, config->compression_level);
     send_data(client->file_descriptor, data->data, data->size);
   } else {
     for (int i = 0; i < chunk->element_count; i++) {
-      send_status(client->file_descriptor, NEXT);
+      send_status(client->file_descriptor, STATUS_NEXT);
       File *file = chunk->items[i];
+      if (config->use_compression) {
+        Data *compressed_data =
+            data_compress(file->data, config->compression_level);
+        data_destroy(file->data);
+        file->data = compressed_data;
+      }
       file_send_single_calls(file, client->file_descriptor);
     }
   }
@@ -76,7 +84,11 @@ int load_files_multithreaded(void *pipeline_context) {
 int send_chunks_multithreaded(void *pipeline_context) {
   PipelineContextSender *context = (PipelineContextSender *)pipeline_context;
   Client *client = client_create();
-  client_connect(client, "127.0.0.1", 8080);
+  const char *env_ip = getenv("FASTSYNC_SERVER_IP");
+  const char *ip = env_ip ? env_ip : "127.0.0.1";
+  const char *env_port = getenv("FASTSYNC_SERVER_PORT");
+  int port = env_port ? atoi(env_port) : 8080;
+  client_connect(client, (char *)ip, port);
   config_send(client->file_descriptor, context->config);
 
   while (true) {
@@ -85,7 +97,7 @@ int send_chunks_multithreaded(void *pipeline_context) {
         &context->condition_not_empty_loader,
         &context->condition_not_full_loader, &context->loader_done);
     if (current_chunk == NULL) {
-      send_status(client->file_descriptor, FINISHED);
+      send_status(client->file_descriptor, STATUS_FINISHED);
       client_disconnect(client);
       client_delete(client);
       return thrd_success;
@@ -100,7 +112,11 @@ int send_chunks_multithreaded(void *pipeline_context) {
 
 int send_files(Config *config) {
   Client *client = client_create();
-  client_connect(client, "127.0.0.1", 8080);
+  const char *env_ip = getenv("FASTSYNC_SERVER_IP");
+  const char *ip = env_ip ? env_ip : "127.0.0.1";
+  const char *env_port = getenv("FASTSYNC_SERVER_PORT");
+  int port = env_port ? atoi(env_port) : 8080;
+  client_connect(client, (char *)ip, port);
   config_send(client->file_descriptor, config);
   DirectoryScanner *scanner = directory_scanner_create(config->send_directory);
   Chunk *current_chunk;
@@ -110,24 +126,15 @@ int send_files(Config *config) {
     send_chunk(client, current_chunk, config);
     chunk_destroy(current_chunk);
   }
-  send_status(client->file_descriptor, FINISHED);
-  if (receive_status(client->file_descriptor) != OK)
+  send_status(client->file_descriptor, STATUS_FINISHED);
+  if (receive_status(client->file_descriptor) != STATUS_OK)
     return -1;
-  printf("FINISHED");
   directory_scanner_destroy(scanner);
   client_disconnect(client);
   client_delete(client);
   return 0;
 }
 
-void handle_arg(char *argument_given, char *argument_to_set, bool *result,
-                char *message) {
-  if (strcmp(argument_given, argument_to_set) == 0) {
-    *result = true;
-    log_message(LOG_LEVEL_INFO, message);
-  }
-}
-
 int send_files_multithreaded(Config *config) {
   PipelineContextSender *context =
       pipeline_context_sender_create(config, queue_create(100, chunk_destroy),
@@ -151,40 +158,55 @@ int send_files_multithreaded(Config *config) {
   return 0;
 }
 
-// int send_files_multiprocessed(Config *config) {
-//   int cores = sysconf(_SC_NPROCESSORS_ONLN);
-//   int pid = fork();
-//   if (pid == -1) {
-//     perror("Error Forking!");
-//     return 1;
-//   } else if (pid == 0) {
-//   }
-//   for (int i = 0; i < cores; i++) {
-//     int pid = fork();
-//     if (pid == -1) {
-//       perror("Error forking!");
-//       return 1;
-//     } else if (pid == 0) {
-//     }
-//   }
-//   return 0;
-// }
-
+void handle_arg(char *argument_given, char *argument_to_set, bool *result,
+                char *message) {
+  if (strcmp(argument_given, argument_to_set) == 0) {
+    *result = true;
+    log_message(LOG_LEVEL_INFO, message);
+  }
+}
 int main(int argc, char *argv[]) {
-  Config *config = config_create(
-      str_dup("1.0.0"), str_dup("/home/taptap/Nextcloud/Uni/moodle/MINT-Raum"),
-      str_dup("./data_copied"), false, false, false, false, 5, 1);
+  const char *env_source = getenv("FASTSYNC_SOURCE_DIR");
+  const char *env_dest = getenv("FASTSYNC_DEST_DIR");
+  const char *env_save = getenv("FASTSYNC_SAVE_TO_DISK");
+
+  char *source_dir =
+      env_source ? str_dup((char *)env_source)
+                 : str_dup("/home/taptap/Nextcloud/Uni/moodle/B. Schnor： "
+                           "Konzepte Paralleler Programmierung, SoSe 2026");
+  char *dest_dir =
+      env_dest ? str_dup((char *)env_dest) : str_dup("./data_copied");
+  bool save_to_disk = false;
+  if (env_save &&
+      (strcmp(env_save, "true") == 0 || strcmp(env_save, "1") == 0)) {
+    save_to_disk = true;
+  }
+
+  Config *config = config_create(str_dup("1.0.0"), source_dir, dest_dir,
+                                 save_to_disk, false, false, false, 5, 20);
   for (int i = 1; i < argc; i++) {
-    handle_arg(argv[i], "-m", &config->use_multithreading,
-               "Enabled Multithreading");
-    handle_arg(argv[i], "-s", &config->use_chunk_serialization,
-               "Enabled Chunk Serialization");
-    handle_arg(argv[i], "-c", &config->use_compression, "Enabled Compression");
+    if (strcmp(argv[i], "-c") == 0) {
+      config->use_compression = true;
+      log_message(LOG_LEVEL_INFO, "Enabled Compression");
+
+      if (i + 1 < argc) {
+        char *end_ptr;
+        int level = strtol(argv[i + 1], &end_ptr, 10);
+        if (*end_ptr == '\0') {
+          config->compression_level = level;
+          log_message(LOG_LEVEL_INFO, "Set Compression level to %d",
+                      config->compression_level);
+        }
+      }
+    } else {
+      handle_arg(argv[i], "-m", &config->use_multithreading,
+                 "Enabled Multithreading");
+      handle_arg(argv[i], "-s", &config->use_chunk_serialization,
+                 "Enabled Chunk Serialization");
+    }
   }
 
   if (config->use_multithreading)
     return send_files_multithreaded(config);
-  // else if (config->use_multiprocessing)
-  //   return send_files_multiprocessed(config);
   return send_files(config);
 }
diff --git a/src/server/server.c b/src/server/server.c
index 744c41a..3891c51 100644
--- a/src/server/server.c
+++ b/src/server/server.c
@@ -1,5 +1,7 @@
-#include "chunk.h"
 #include "config.h"
+#include "data.h"
+#include "file.h"
+#include "log.h"
 #include "multiprocessing.h"
 #include "queue.h"
 #include "socket.h"
@@ -9,9 +11,14 @@
 #include <stdlib.h>
 #include <threads.h>
 
-FileReceive *receive_file_receive(int file_descriptor) {
+FileReceive *receive_file_receive(Config *config, int file_descriptor) {
   char *path = (char *)receive_str(file_descriptor);
   Data *file_data = receive_data(file_descriptor);
+  if (config->use_compression) {
+    Data *file_data_uncompressed = data_decompress(file_data);
+    free(file_data);
+    file_data = file_data_uncompressed;
+  }
   FileReceive *file = file_receive_create(path, file_data);
   return file;
 }
@@ -21,10 +28,11 @@ int receive_thread(void *pipeline_context) {
       (PipelineContextReceiver *)pipeline_context;
   mtx_lock(&context->mutex);
   int file_descriptor = context->file_descriptor;
+  Config *config = context->config;
   mtx_unlock(&context->mutex);
 
-  while (receive_status(file_descriptor) == NEXT) {
-    FileReceive *file = receive_file_receive(file_descriptor);
+  while (receive_status(file_descriptor) == STATUS_NEXT) {
+    FileReceive *file = receive_file_receive(config, file_descriptor);
     queue_enqueue_multithreaded(context->queue, file, &context->mutex,
                                 &context->condition_not_empty,
                                 &context->condition_not_full);
@@ -60,19 +68,21 @@ int write_thread(void *pipeline_context) {
 
 int receive_files(Config *config, int file_descriptor) {
   Status status = receive_status(file_descriptor);
-  while (status == NEXT) {
-    FileReceive *file = receive_file_receive(file_descriptor);
+  while (status == STATUS_NEXT) {
+    FileReceive *file = receive_file_receive(config, file_descriptor);
     if (config->save_to_disk)
       to_disk(path_cat(config->receive_root_directory, file->path),
               file->data->data, file->data->size);
     file_receive_destroy(file);
+    // send_status(file_descriptor, STATUS_OK);
     status = receive_status(file_descriptor);
   }
-  if (status != FINISHED) {
-    send_status(file_descriptor, ERROR);
+  if (status != STATUS_FINISHED) {
+    log_message(LOG_LEVEL_ERROR, "Did not receive FINISHED or NEXT Status");
+    send_status(file_descriptor, STATUS_ERROR);
     return -1;
   }
-  send_status(file_descriptor, OK);
+  send_status(file_descriptor, STATUS_OK);
   return 0;
 }
 
diff --git a/src/shared/chunk.c b/src/shared/chunk.c
index 9199dbb..06793ff 100644
--- a/src/shared/chunk.c
+++ b/src/shared/chunk.c
@@ -6,99 +6,11 @@
 #include <string.h>
 #include <zstd.h>
 
+#include "array_list.h"
 #include "chunk.h"
 #include "data.h"
+#include "file.h"
 #include "log.h"
-#include "socket.h"
-
-File *file_create(const char *path, struct stat *stats) {
-  File *file = (File *)malloc(sizeof(File));
-  if (file == NULL) {
-    perror("FATAL ERROR: Could not allocate memory for file struct");
-    exit(EXIT_FAILURE);
-  }
-
-  file->stats = *stats;
-
-  int path_len = strlen(path);
-  file->path = (char *)malloc(path_len + 1);
-  if (file->path == NULL) {
-    perror("FATAL ERROR: Could not allocate memory for path file string");
-    free(file);
-    exit(EXIT_FAILURE);
-  }
-
-  strcpy(file->path, path);
-  file->data = NULL;
-  return file;
-}
-
-void file_destroy(void *item) {
-  if (item == NULL)
-    return;
-  File *file = (File *)item;
-  free(file->data);
-  file->data = NULL;
-  free(file->path);
-  file->path = NULL;
-  free(file);
-}
-
-void file_load_data(File *file) {
-  if (file == NULL)
-    return;
-  file->data = malloc(file->stats.st_size);
-  if (file->data == NULL) {
-    perror("Could not allocate memeor y for file data!");
-    exit(EXIT_FAILURE);
-  }
-  file_content_to_buffer(file, file->data);
-}
-
-void file_print(void *item) {
-  if (item == NULL)
-    return;
-  printf("%s\n", ((File *)item)->path);
-}
-
-void file_send_single_calls(File *file, int file_descriptor) {
-  send_str(file_descriptor, file->path);
-  send_data(file_descriptor, file->data, file->stats.st_size);
-}
-
-void file_content_to_buffer(File *file, char *buffer) {
-  if (buffer == NULL) {
-    perror("Buffer is to write file content to is NULL!");
-    exit(EXIT_FAILURE);
-  }
-  FILE *file_pointer = fopen(file->path, "rb");
-  if (file_pointer == NULL) {
-    perror("Could not open the file!");
-    exit(EXIT_FAILURE);
-  }
-  size_t bytes_read = fread(buffer, 1, file->stats.st_size, file_pointer);
-  if (bytes_read != (size_t)file->stats.st_size) {
-    perror("Read to many or to less bytes from File!");
-    exit(EXIT_FAILURE);
-  }
-  fclose(file_pointer);
-}
-
-FileReceive *file_receive_create(char *path, Data *data) {
-  FileReceive *file = malloc(sizeof(FileReceive));
-  file->path = path;
-  file->data_fragment = data;
-  return file;
-}
-
-void file_receive_destroy(void *file_receive) {
-  if (file_receive == NULL)
-    return;
-  FileReceive *file = (FileReceive *)file_receive;
-  data_destroy(file->data_fragment);
-  free(file->path);
-  free(file);
-}
 
 Chunk *chunk_create(File **items, int element_count) {
   Chunk *chunk = (Chunk *)malloc(sizeof(Chunk));
@@ -160,23 +72,23 @@ Data *chunk_format(Chunk *chunk) {
     exit(EXIT_FAILURE);
   }
   char *current_data_pointer = data;
-  for (int i = 0; i < chunk->element_count; ++i) {
-    File *file = chunk->items[i];
-    // add path len
-    int path_length = (int)strlen(file->path);
-    memcpy(current_data_pointer, &path_length, sizeof(int));
-    current_data_pointer += sizeof(int);
-    // add path
-    memcpy(current_data_pointer, file->path, path_length);
-    current_data_pointer += path_length;
-    // add file data len
-    unsigned long long file_length = file->stats.st_size;
-    memcpy(current_data_pointer, &file_length, sizeof(unsigned long long));
-    current_data_pointer += sizeof(unsigned long long);
-    // add file data
-    file_content_to_buffer(file, current_data_pointer);
-    current_data_pointer += file_length;
-  }
+  // for (int i = 0; i < chunk->element_count; ++i) {
+  //   File *file = chunk->items[i];
+  //   // add path len
+  //   int path_length = (int)strlen(file->path);
+  //   memcpy(current_data_pointer, &path_length, sizeof(int));
+  //   current_data_pointer += sizeof(int);
+  //   // add path
+  //   memcpy(current_data_pointer, file->path, path_length);
+  //   current_data_pointer += path_length;
+  //   // add file data len
+  //   unsigned long long file_length = file->stats.st_size;
+  //   memcpy(current_data_pointer, &file_length, sizeof(unsigned long long));
+  //   current_data_pointer += sizeof(unsigned long long);
+  //   // add file data
+  //   file_content_to_buffer(file, current_data_pointer);
+  //   current_data_pointer += file_length;
+  // }
   if (current_data_pointer - data != (long)(long)buffer_size) {
     perror("Buffer of Chunk wasn't filled enough!");
     exit(EXIT_FAILURE);
@@ -202,27 +114,38 @@ Data *chunk_compress(Chunk *chunk, int compression_level) {
   char *data_pointer = data->data;
   for (int i = 0; i < chunk->element_count; i++) {
     // path length
-    unsigned long long path_len = strlen(chunk->items[i]->path);
-    memcpy(data_pointer, &path_len, sizeof(unsigned long long));
-    data_pointer += sizeof(unsigned long long);
+    size_t path_len = strlen(chunk->items[i]->path);
+    memcpy(data_pointer, &path_len, sizeof(size_t));
+    data_pointer += sizeof(size_t);
     memcpy(data_pointer, chunk->items[i]->path, path_len);
     data_pointer += path_len;
     // file data
     unsigned long long data_size = chunk->items[i]->stats.st_size;
-    memcpy(data_pointer, &data_size, sizeof(unsigned long long));
-    data_pointer += sizeof(unsigned long long);
+    memcpy(data_pointer, &data_size, sizeof(size_t));
+    data_pointer += sizeof(size_t);
     memcpy(data_pointer, chunk->items[i]->data, data_size);
     data_pointer += data_size;
   }
 
   log_message(LOG_LEVEL_DEBUG, "Chunk succesfully compressed");
-  return compress_data(data, compression_level);
+  return data_compress(data, compression_level);
 }
 
-Chunk *chunk_decompress(Data *data, int compression_level) {
-  // ArrayList *files = array_list_create(file_destroy);
-  // size_t data_size = ZSTD_getFrameContentSize(const void *src, size_t
-  // srcSize);
+Chunk *chunk_decompress(Data *compressed_data) {
+  log_message(LOG_LEVEL_DEBUG, "Starting to decompress chunk");
+  Data *uncompressed_data = data_decompress(compressed_data);
+  ArrayList *files = array_list_create(file_destroy);
+  size_t *data_pointer = uncompressed_data->data;
+  while (data_pointer <
+         (size_t *)uncompressed_data->data + uncompressed_data->size) {
+    size_t path_len = data_pointer[0];
+
+    printf("%zu, testing", path_len);
+    break;
+  }
+
+  log_message(LOG_LEVEL_DEBUG, "Chunk succesfully decompressed");
+  return NULL;
 }
 
 Data *chunk_data_create(void *data, unsigned long long data_size) {
diff --git a/src/shared/chunk.h b/src/shared/chunk.h
index 7c2e7cd..59feeed 100644
--- a/src/shared/chunk.h
+++ b/src/shared/chunk.h
@@ -2,44 +2,24 @@
 #define CHUNK_H
 
 #include "data.h"
+#include "file.h"
 #include <sys/stat.h>
 
 #define DESIRED_CHUNK_SIZE 10 * 1024 * 1024
 #define FILE_PATH_SEPERATOR "#&&SEPP&&#"
 #define FILE_PATH_DATA_SEPERATOR "#&&SEPD&&#"
 
-typedef struct {
-  char *path;
-  struct stat stats;
-  char *data;
-} File;
-
-typedef struct {
-  char *path;
-  Data *data;
-} FileReceive;
-
 typedef struct {
   File **items;
   int element_count;
 } Chunk;
 
-File *file_create(const char *path, struct stat *stats);
-void file_destroy(void *item);
-void file_load_data(File *file);
-void file_print(void *item);
-void file_send_single_calls(File *file, int file_descriptor);
-void file_content_to_buffer(File *file, char *buffer);
-
-FileReceive *file_receive_create(char *path, Data *data);
-void file_receive_destroy(void *file_receive);
-
 Chunk *chunk_create(File **items, int element_count);
 void chunk_destroy(void *chunk);
 void chunk_print(void *chunk);
 Data *chunk_format(Chunk *chunk);
 Data *chunk_compress(Chunk *chunk, int compression_level);
-Chunk *chunk_decompress(Data *data, int compression_level);
+Chunk *chunk_decompress(Data *compressed_data);
 
 Data *chunk_data_create(void *data, unsigned long long data_size);
 void chunk_data_delete(void *chunk);
diff --git a/src/shared/config.c b/src/shared/config.c
index a00164f..83e5064 100644
--- a/src/shared/config.c
+++ b/src/shared/config.c
@@ -40,7 +40,7 @@ void config_send(int file_descriptor, Config *config) {
   send_int(file_descriptor, config->use_compression);
   send_int(file_descriptor, config->use_compression);
   send_int(file_descriptor, config->num_connections);
-  if (receive_status(file_descriptor) != OK) {
+  if (receive_status(file_descriptor) != STATUS_OK) {
     perror("Error transmitting config!");
     exit(EXIT_FAILURE);
   }
@@ -57,6 +57,6 @@ Config *config_receive(int file_descriptor) {
   config->use_compression = receive_int(file_descriptor);
   config->compression_level = receive_int(file_descriptor);
   config->num_connections = receive_int(file_descriptor);
-  send_status(file_descriptor, OK);
+  send_status(file_descriptor, STATUS_OK);
   return config;
 }
diff --git a/src/shared/data.c b/src/shared/data.c
index babef80..d77130a 100644
--- a/src/shared/data.c
+++ b/src/shared/data.c
@@ -21,7 +21,7 @@ Data *data_create(void *data, size_t data_size) {
   }
   new_data->data = data;
   new_data->size = data_size;
-  return data;
+  return new_data;
 }
 
 void data_destroy(Data *data) {
@@ -29,7 +29,7 @@ void data_destroy(Data *data) {
   free(data);
 }
 
-Data *compress_data(Data *data_to_compress, int compression_level) {
+Data *data_compress(Data *data_to_compress, int compression_level) {
   log_message(LOG_LEVEL_DEBUG, "Starting to compress data");
   Data *compressed_data =
       data_create_empty(ZSTD_compressBound(data_to_compress->size));
@@ -43,11 +43,12 @@ Data *compress_data(Data *data_to_compress, int compression_level) {
     exit(EXIT_FAILURE);
   }
 
-  log_message(LOG_LEVEL_DEBUG, "Data succesfully compressed");
+  log_message(LOG_LEVEL_DEBUG, "Data succesfully compressed from %zu to %zu",
+              data_to_compress->size, compressed_data->size);
   return compressed_data;
 }
 
-Data *decompress_data(Data *compressed_data) {
+Data *data_decompress(Data *compressed_data) {
   log_message(LOG_LEVEL_DEBUG, "Start to decompress data");
   Data *uncompressed_data = data_create_empty(
       ZSTD_getFrameContentSize(compressed_data->data, compressed_data->size));
diff --git a/src/shared/data.h b/src/shared/data.h
index 28d1ce1..fc26fee 100644
--- a/src/shared/data.h
+++ b/src/shared/data.h
@@ -11,7 +11,7 @@ typedef struct {
 Data *data_create_empty(size_t data_size);
 Data *data_create(void *data, size_t data_size);
 void data_destroy(Data *data);
-Data *compress_data(Data *data_to_compress, int compression_level);
-Data *decompress_data(Data *compressed_data);
+Data *data_compress(Data *data_to_compress, int compression_level);
+Data *data_decompress(Data *compressed_data);
 
 #endif
diff --git a/src/shared/file.c b/src/shared/file.c
new file mode 100644
index 0000000..258aa50
--- /dev/null
+++ b/src/shared/file.c
@@ -0,0 +1,103 @@
+#include <dirent.h>
+#include <libgen.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <zstd.h>
+
+#include "data.h"
+#include "file.h"
+#include "log.h"
+#include "socket.h"
+
+File *file_create(const char *path, struct stat *stats) {
+  File *file = (File *)malloc(sizeof(File));
+  if (file == NULL) {
+    perror("FATAL ERROR: Could not allocate memory for file struct");
+    exit(EXIT_FAILURE);
+  }
+
+  file->stats = *stats;
+
+  int path_len = strlen(path);
+  file->path = (char *)malloc(path_len + 1);
+  if (file->path == NULL) {
+    perror("FATAL ERROR: Could not allocate memory for path file string");
+    free(file);
+    exit(EXIT_FAILURE);
+  }
+
+  strcpy(file->path, path);
+  file->data = NULL;
+  return file;
+}
+
+void file_destroy(void *item) {
+  if (item == NULL)
+    return;
+  File *file = (File *)item;
+  free(file->data);
+  file->data = NULL;
+  free(file->path);
+  file->path = NULL;
+  free(file);
+}
+
+void file_load_data(File *file) {
+  if (file == NULL)
+    return;
+  file->data = data_create_empty(file->stats.st_size);
+  printf("%ld is file big", file->data->size);
+  size_t bytes_read = file_content_to_buffer(file);
+  if (bytes_read != file->data->size) {
+    log_message(STATUS_ERROR, "Didnt read expected amount of bytes from file");
+    exit(EXIT_FAILURE);
+  }
+}
+
+void file_print(void *item) {
+  if (item == NULL)
+    return;
+  printf("%s\n", ((File *)item)->path);
+}
+
+void file_send_single_calls(File *file, int file_descriptor) {
+  send_str(file_descriptor, file->path);
+  printf("Sending File: %ld", file->data->size);
+  send_data(file_descriptor, file->data->data, file->data->size);
+}
+
+size_t file_content_to_buffer(File *file) {
+  FILE *file_pointer = fopen(file->path, "rb");
+  if (file_pointer == NULL) {
+    perror("Could not open the file!");
+    return 0;
+  }
+  size_t bytes_read =
+      fread(file->data->data, 1, file->stats.st_size, file_pointer);
+  if (bytes_read != (size_t)file->stats.st_size) {
+    perror("Read to many or to less bytes from File!");
+    return 0;
+  }
+  fclose(file_pointer);
+  return bytes_read;
+}
+
+FileReceive *file_receive_create(char *path, Data *data) {
+  FileReceive *file = malloc(sizeof(FileReceive));
+  file->path = path;
+  file->data = data;
+  return file;
+}
+
+void file_receive_destroy(void *file_receive) {
+  if (file_receive == NULL)
+    return;
+  FileReceive *file = (FileReceive *)file_receive;
+  data_destroy(file->data);
+  free(file->path);
+  free(file);
+}
+
+FileReceive *file_receive_from_buffer(void *buffer) {}
diff --git a/src/shared/file.h b/src/shared/file.h
new file mode 100644
index 0000000..d73bcb7
--- /dev/null
+++ b/src/shared/file.h
@@ -0,0 +1,31 @@
+#ifndef FILE_H
+#define FILE_H
+
+#include "data.h"
+#include <sys/stat.h>
+
+typedef struct {
+  char *path;
+  struct stat stats;
+  Data *data;
+} File;
+
+typedef struct {
+  char *path;
+  Data *data;
+} FileReceive;
+
+File *file_create(const char *path, struct stat *stats);
+void file_destroy(void *item);
+void file_load_data(File *file);
+void file_print(void *item);
+void file_send_single_calls(File *file, int file_descriptor);
+size_t file_content_to_buffer(File *file);
+Data *file_compress(File *file);
+
+FileReceive *file_receive_create(char *path, Data *data);
+void file_receive_destroy(void *file_receive);
+FileReceive *file_receive_from_buffer(void *buffer);
+FileReceive *file_receive_decompress(void *FileReceive);
+
+#endif
diff --git a/src/shared/socket.c b/src/shared/socket.c
index 43918a4..3494995 100644
--- a/src/shared/socket.c
+++ b/src/shared/socket.c
@@ -110,18 +110,19 @@ void client_delete(Client *client) {
 
 void send_n_data(int file_descriptor, void *data, size_t data_size) {
   log_message(LOG_LEVEL_DEBUG, "    Sending n Data: %d", data_size);
-  size_t total_bytes_send = 0;
+  ssize_t total_bytes_send = 0;
   while (total_bytes_send < data_size) {
-    long long bytes_send =
-        send(file_descriptor, (char *)data + total_bytes_send,
-             data_size - total_bytes_send, 0);
-    if (bytes_send == 0) {
+    printf("Trying: %zu\n", data_size - total_bytes_send);
+    ssize_t bytes_send = send(file_descriptor, (char *)data + total_bytes_send,
+                              data_size - total_bytes_send, 0);
+    printf("Bytes send: %zd\n", bytes_send);
+    if (bytes_send <= 0) {
       perror("Could not send data!");
       exit(EXIT_FAILURE);
     }
     total_bytes_send += bytes_send;
   }
-  log_message(LOG_LEVEL_DEBUG, "    Send n Data: %d", total_bytes_send);
+  log_message(LOG_LEVEL_DEBUG, "    Send n Data: %zu", total_bytes_send);
 }
 
 void receive_n_data(int file_descriptor, void *data, size_t data_size) {
@@ -186,13 +187,13 @@ int receive_int(int file_descriptor) {
 
 const char *status_to_string(Status status) {
   switch (status) {
-  case OK:
+  case STATUS_OK:
     return "OK";
-  case ERROR:
+  case STATUS_ERROR:
     return "ERROR";
-  case FINISHED:
+  case STATUS_FINISHED:
     return "FINISHED";
-  case NEXT:
+  case STATUS_NEXT:
     return "NEXT";
   default:
     return "UNKNOWN";
diff --git a/src/shared/socket.h b/src/shared/socket.h
index dc199a0..5f0cc4f 100644
--- a/src/shared/socket.h
+++ b/src/shared/socket.h
@@ -5,7 +5,7 @@
 #include <netinet/in.h>
 
 typedef int Status;
-enum NET_STATUS { OK, ERROR, FINISHED, NEXT };
+enum NET_STATUS { STATUS_OK, STATUS_ERROR, STATUS_FINISHED, STATUS_NEXT };
 
 typedef struct Server {
   struct sockaddr_in address;
diff --git a/src/shared/utils.c b/src/shared/utils.c
index 9a3ead2..fd16a59 100644
--- a/src/shared/utils.c
+++ b/src/shared/utils.c
@@ -10,9 +10,14 @@ void mkdir_r(char *path) {
   strcpy(path_duplicate, path);
   char *path_current = (char *)malloc((strlen(path) + 2) * sizeof(char));
   char *path_current_position = path_current;
+  if (path[0] == '/') {
+    strcpy(path_current, "/");
+    path_current_position += 1;
+  } else {
+    path_current[0] = '\0';
+  }
   const char *delimiter = "/";
   char *part = strtok(path_duplicate, delimiter);
-  // struct stat st;
   while (part != NULL) {
     strcpy(path_current_position, part);
     path_current_position += strlen(part) * sizeof(char);
diff --git a/test.py b/test.py
old mode 100644
new mode 100755
index 681af42..ce281d8
--- a/test.py
+++ b/test.py
@@ -1,3 +1,4 @@
+import os
 import subprocess
 import time
 
@@ -35,15 +36,18 @@ CLIENT_CMD_PREFIX = [
 TEST_CASES = [
     {"name": "Standard (Single-threaded)", "flags": []},
     {"name": "Multithreading (-m)", "flags": ["-m"]},
-    {"name": "Compression (-c)", "flags": ["-c"]},
-    {"name": "Chunk Serialization (-s)", "flags": ["-s"]},
+    {"name": "Compression (-c -5)", "flags": ["-c 20"]},
+    {"name": "Compression (-c 0)", "flags": ["-c 0"]},
+    {"name": "Compression (-c 10)", "flags": ["-c 10"]},
+    {"name": "Compression (-c 20)", "flags": ["-c 20"]},
+    # {"name": "Chunk Serialization (-s)", "flags": ["-s"]},
     {"name": "Multithreading + Compression (-m -c)", "flags": ["-m", "-c"]},
-    {"name": "Multithreading + Chunk Serialization (-m -s)", "flags": ["-m", "-s"]},
-    {"name": "Compression + Chunk Serialization (-c -s)", "flags": ["-c", "-s"]},
-    {
-        "name": "Multithreading + Compression + Chunk Serialization (-m -c -s)",
-        "flags": ["-m", "-c", "-s"],
-    },
+    # {"name": "Multithreading + Chunk Serialization (-m -s)", "flags": ["-m", "-s"]},
+    # {"name": "Compression + Chunk Serialization (-c -s)", "flags": ["-c", "-s"]},
+    # {
+    #     "name": "Multithreading + Compression + Chunk Serialization (-m -c -s)",
+    #     "flags": ["-m", "-c", "-s"],
+    # },
 ]
 
 
@@ -179,6 +183,9 @@ def run_suite(env_name, apply_limits):
     return results
 
 
+os.system("cmake -B build -S .")
+os.system("cd build && make")
+
 # --- Main Execution ---
 all_results = []
 
diff --git a/tests/test_chunk.c b/tests/test_chunk.c
index bda51de..3998607 100644
--- a/tests/test_chunk.c
+++ b/tests/test_chunk.c
@@ -1,4 +1,4 @@
-#include "test_chunk.h"
+
 #include "chunk.h"
 #include "test_utils.h"
 #include "utils.h"
@@ -44,8 +44,8 @@ static void test_file_receive_operations() {
   FileReceive *fr = file_receive_create(path, df);
   EXPECT_NOT_NULL(fr);
   EXPECT_EQ_STR(fr->path, "temp_receive.txt");
-  EXPECT_NOT_NULL(fr->data_fragment);
-  EXPECT_EQ_STR(fr->data_fragment->data, "receive data content");
+  EXPECT_NOT_NULL(fr->data);
+  EXPECT_EQ_STR(fr->data->data, "receive data content");
 
   file_receive_destroy(fr);
 }
diff --git a/to_one_file.py b/to_one_file.py
index bc70b50..0a28b76 100644
--- a/to_one_file.py
+++ b/to_one_file.py
@@ -8,7 +8,7 @@ for file in path.glob("**/*.h"):
 for file in path.glob("**/*.c"):
     text += "--- " + str(file) + " ---\n\n"
     text += file.read_text()
-for file in [Path("Makefile")]:
+for file in [Path("CMakeLists.txt")]:
     text += "--- " + str(file) + " ---\n\n"
     text += file.read_text()
 Path("all.txt").write_text(text)