we're sure we use unsued port

.gitignore

@@ -2,7 +2,7 @@
 .vscode/
 unwanted_logs/
 log_files/
-feedback_ingi.zip
+*.zip
 linksimulator/
 demo.*
 interpo/
\ No newline at end of file

tests/advanced_test.sh

@@ -24,13 +24,18 @@ touch "${TEST_OUTPUT_FILES}/adv_${BSN_PRE}_received_file.${BSN_EXT}" \
       "${TEST_OUTPUT_FILES}/adv_valgrind_${BSN_PRE}_sender.log"
 
 
+# The next 2 lines come from: https://unix.stackexchange.com/questions/55913/whats-the-easiest-way-to-find-an-unused-local-port
+# We use this to be sure we're using unused port
+port1=$(comm -23 <(seq 49152 65535 | sort) <(ss -Htan | awk '{print $4}' | cut -d':' -f2 | sort -u) | shuf | head -n 1)
+port2=$(comm -23 <(seq 49152 65535 | sort) <(ss -Htan | awk '{print $4}' | cut -d':' -f2 | sort -u) | shuf | head -n 1)
+
 # We first launch the link simulator 
-./linksimulator/link_sim -p 65027 -P 65139 -l 70 -d 1500 -e 20 -c 10 -R \
+./linksimulator/link_sim -p $port2 -P $port1 -l 70 -d 1500 -e 20 -c 10 -R \
   &>${TEST_OUTPUT_FILES}/adv_${BSN_PRE}_link.log & link_pid=$!
 
 # We launch the receiver and capture its output
 valgrind --leak-check=full --log-file=${TEST_OUTPUT_FILES}/adv_${BSN_PRE}_valgrind_receiver.log \
-              ./receiver ::1 65139 1> ${TEST_OUTPUT_FILES}/adv_${BSN_PRE}_received_file.${BSN_EXT} \
+              ./receiver ::1 $port1 1> ${TEST_OUTPUT_FILES}/adv_${BSN_PRE}_received_file.${BSN_EXT} \
               2> ${TEST_OUTPUT_FILES}/adv_${BSN_PRE}_receiver.log & receiver_pid=$!
 
 cleanup()
@@ -43,7 +48,7 @@ trap cleanup SIGINT  # Kill the background procces in case of ^-C
 
 # We start the transfer
 if ! valgrind --leak-check=full --log-file=${TEST_OUTPUT_FILES}/adv_valgrind_${BSN_PRE}_receiver.log \
-    ./sender -f ${FILENAME} ::1 65027 2> ${TEST_OUTPUT_FILES}/adv_${BSN_PRE}_sender.log ; then
+    ./sender -f ${FILENAME} ::1 $port2 2> ${TEST_OUTPUT_FILES}/adv_${BSN_PRE}_sender.log ; then
   echo "Crash du sender!"
   cat ${TEST_OUTPUT_FILES}/adv_${BSN_PRE}_sender.log
   err=1  # We record the error

tests/simple_test.sh

@@ -26,9 +26,13 @@ touch "${TEST_OUTPUT_FILES}/${BSNM_PRE}_received_file.${BSNM_EXT}" \
       "${TEST_OUTPUT_FILES}/${BSNM_PRE}_receiver.log"
 
 
+# The next line come from: https://unix.stackexchange.com/questions/55913/whats-the-easiest-way-to-find-an-unused-local-port
+# We use this to be sure we're using unused port
+port=$(comm -23 <(seq 49152 65535 | sort) <(ss -Htan | awk '{print $4}' | cut -d':' -f2 | sort -u) | shuf | head -n 1)
+
 # We launch the receiver and capture its output
 valgrind --leak-check=full --log-file=${TEST_OUTPUT_FILES}/valgrind_${BSNM_PRE}_receiver.log \
-              ./receiver ::1 65197 1> ${TEST_OUTPUT_FILES}/${BSNM_PRE}_received_file.${BSNM_EXT} \
+              ./receiver ::1 $port 1> ${TEST_OUTPUT_FILES}/${BSNM_PRE}_received_file.${BSNM_EXT} \
               2> ${TEST_OUTPUT_FILES}/${BSNM_PRE}_receiver.log & receiver_pid=$!
 
 cleanup()
@@ -41,7 +45,7 @@ trap cleanup SIGINT  # Kill the background procces in case of ^-C
 
 # We start the transfer
 if ! valgrind --leak-check=full --log-file=${TEST_OUTPUT_FILES}/valgrind_${BSNM_PRE}_sender.log \
-    ./sender -f ${FILENAME} ::1 65197 2> ${TEST_OUTPUT_FILES}/${BSNM_PRE}_sender.log ; then
+    ./sender -f ${FILENAME} ::1 $port 2> ${TEST_OUTPUT_FILES}/${BSNM_PRE}_sender.log ; then
   echo "The sender crashed!"
   cat ${TEST_OUTPUT_FILES}/${BSNM_PRE}_sender.log
   err=1  # We record the error