diff --git a/platform/platform_tests/downloader_test.cpp b/platform/platform_tests/downloader_test.cpp
index f491ccfbc8..3cd243c168 100644
--- a/platform/platform_tests/downloader_test.cpp
+++ b/platform/platform_tests/downloader_test.cpp
@@ -433,7 +433,7 @@ UNIT_TEST(DownloadChunks)
     FinishDownloadFail(FILENAME);
   }
 
-  string const SHA256 = "338C28398CE42C1B2F6DCE2D288956819C08E64894B788250837653BAF5049BA";
+  string const SHA256 = "3CE28B04BCC3006124A5324B2B145C94F6AEC613BC4135DCEF6E57C436B41B89";
 
   observer.Reset();
 
@@ -541,7 +541,7 @@ UNIT_TEST(DownloadResumeChunks)
   string const FILENAME = "some_test_filename_12345";
   string const RESUME_FILENAME = FILENAME + RESUME_FILE_EXTENSION;
   string const DOWNLOADING_FILENAME = FILENAME + DOWNLOADING_FILE_EXTENSION;
-  string const SHA256 = "91BF56C789DEFCB1F9E8EACDCB4C88C17BBC6615C24C394DF25DD2CD37B1B159";
+  string const SHA256 = "3CE28B04BCC3006124A5324B2B145C94F6AEC613BC4135DCEF6E57C436B41B89";
 
   // remove data from previously failed files
   DeleteTempDownloadFiles();
@@ -607,7 +607,7 @@ UNIT_TEST(DownloadResumeChunks)
 UNIT_TEST(DownloadResumeChunksWithCancel)
 {
   string const FILENAME = "some_test_filename_12345";
-  string const SHA256 = "1654E268B74B23922FD20DC3CB7926373279770FBA7BD81B5AF25F0E2D5E0A0D";
+  string const SHA256 = "3CE28B04BCC3006124A5324B2B145C94F6AEC613BC4135DCEF6E57C436B41B89";
 
   // remove data from previously failed files
   DeleteTempDownloadFiles();
diff --git a/tools/testserver.py b/tools/testserver.py
index aa01e49a2d..1cde252ad5 100644
--- a/tools/testserver.py
+++ b/tools/testserver.py
@@ -48,7 +48,7 @@ from scipy.stats.stats import trim_mean
 
 
 PORT = 34568
-LIFESPAN = 180.0  # timeout for the self destruction timer - how much time 
+LIFESPAN = 18000.0  # timeout for the self destruction timer - how much time 
                   # passes between the last request and the server killing 
                   # itself
 PING_TIMEOUT = 5  # Nubmer of seconds to wait for ping response
@@ -274,7 +274,7 @@ class PostHandler(BaseHTTPRequestHandler):
         self.end_headers()
         for i in range(0, length + 1):
 #             try:
-            self.wfile.write(255)
+            self.wfile.write(chr(i%256))
 #             except IOError, e:
 #                 if e.errno == errno.EPIPE:
 #                     print("This is indeed a broken pipe")