diff --git a/adafruit_httpserver/response.py b/adafruit_httpserver/response.py
index c6cdcea..c24a14f 100644
--- a/adafruit_httpserver/response.py
+++ b/adafruit_httpserver/response.py
@@ -247,3 +247,4 @@ def _send_bytes(
                     continue
                 if exc.errno == ECONNRESET:
                     return
+                raise
diff --git a/adafruit_httpserver/server.py b/adafruit_httpserver/server.py
index 0a41616..8ee473b 100644
--- a/adafruit_httpserver/server.py
+++ b/adafruit_httpserver/server.py
@@ -104,6 +104,7 @@ def _receive_header_bytes(
             except OSError as ex:
                 if ex.errno == ETIMEDOUT:
                     break
+                raise
             except Exception as ex:
                 raise ex
         return received_bytes
@@ -122,6 +123,7 @@ def _receive_body_bytes(
             except OSError as ex:
                 if ex.errno == ETIMEDOUT:
                     break
+                raise
             except Exception as ex:
                 raise ex
         return received_body_bytes[:content_length]