not so bad sender

headers/sender_utils.h

@@ -42,7 +42,7 @@ int handle_returning_ack_nack(sender_state_t *state, int socket_fd);
 
 int loop_over_timers(sender_state_t *state, int socket_fd);
 
-int read_and_send();
+int read_and_send(sender_state_t *state, int sending_fd, int socket_fd);
 
 
 #endif
\ No newline at end of file

src/sender.c

@@ -139,7 +139,7 @@ int main(int argc, char **argv) {
         }
         else if ( !(sending_file_read_done) && (pfd->revents & POLLOUT) )
         {
-            DEBUG("The sender will send a pkt on the socket");
+            DEBUG("The sender will send a pkt on the socket, the current window size is: %d", state->s_window_size);
             sending_file_read_done = read_and_send(state, sending_fd, socket_fd);
             if (sending_file_read_done == -1)
             {

src/sender_utils.c

@@ -120,7 +120,12 @@ int read_and_send(sender_state_t *state, int sending_fd, int socket_fd)
 
     char packet_to_be_sent[PKT_MAX_LEN];
     size_t len = PKT_MAX_LEN;
-    if (pkt_encode(pkt, packet_to_be_sent, &len) != PKT_OK) return -1;
+    pkt_status_code pkt_status = pkt_encode(pkt, packet_to_be_sent, &len);
+    if (pkt_status != PKT_OK) 
+    {
+        DEBUG("pkt_encode for a PTYPE_DATA failed with status: %d", pkt_status);
+        return -1;
+    }
     
     ssize_t sent = send(socket_fd, packet_to_be_sent, len, 0);
     if (sent == -1) return -1;
@@ -140,6 +145,6 @@ int read_and_send(sender_state_t *state, int sending_fd, int socket_fd)
     off_t old_position = lseek(sending_fd, 0, SEEK_CUR);
     off_t end_position = lseek(sending_fd, 0, SEEK_END);
     // put back the reader cursor
-    lseek(sending_fd, 0, SEEK_SET);
+    lseek(sending_fd, old_position, SEEK_SET);
     return old_position == end_position;
 }

test_files/long_message.txt

@@ -4,4 +4,11 @@ network course. But when you manage to thrive throgh tough times then sweet thin
 ahead. So good luck have a nice day of testing and remember : Tough Times Never Last.
 
 PS: Drink a beer when you pass the test. Share your knowledge to others, computer 
-science isn't a field for selfishness. If you want to switch to Law, Economy, some shit
+science isn't a field for selfishness. If you want to switch to Law, Economy, some shit
\ No newline at end of file
+
+Hi Vany I love reading from you. As you know I'm working sometime a bit late in the night.
+In a few hour you'll be in th famous "Salle Intel" to be really productive as you are.
+
+Best regards,
+
+Samuel
\ No newline at end of file