Switch micropython to commit which implements TCP listen/accept backlog support

Fix unittest - support both: remove/unlink

Author: belyalov

.travis.yml

@@ -21,9 +21,11 @@ install:
   - ln -s ../../uasyncio.core/uasyncio/core.py `pwd`/micropython-lib/uasyncio/uasyncio
   - ln -s `pwd`/micropython-lib/uasyncio/uasyncio $MDST/uasyncio
   - ln -s `pwd`/tinyweb $MDST/tinyweb
-  # compile/install micropython. Use release v1.9.4
+  # compile/install micropython.
+  # Use commit "extmod/modlwip: Implement TCP listen/accept backlog"
+  # In order to support TCP listen/accept backlog
   - cd micropython
-  - git checkout v1.9.4
+  - git checkout 4737ff8054e84b3ccd1e7364d773a8c1d14095f5
   - sudo make -C ports/unix axtls install
   - cd ..
 
@@ -42,8 +44,8 @@ script:
   - export MPORT=micropython/ports/esp32/modules
   - ln -s `pwd`/tinyweb $MPORT/tinyweb
   - ln -s `pwd`/micropython-lib/uasyncio/uasyncio $MPORT/uasyncio
-  # Supported SDK for 1.9.4 is 3ede9f011b50999b0560683f9419538c066dd09e
-  - docker run -v`pwd`/micropython:/micropython arsenicus/esp32-open-sdk:3ede9f011b50999b0560683f9419538c066dd09e /bin/bash -c ". /.bashrc && cd /micropython/ports/esp32 && make"
+  # Supported ESP32 SDK
+  - docker run -v`pwd`/micropython:/micropython arsenicus/esp32-open-sdk:30545f4cccec7460634b656d278782dd7151098e /bin/bash -c ". /.bashrc && cd /micropython/ports/esp32 && make"
   - cp micropython/ports/esp32/build/firmware.bin ./firmware_esp32-$TRAVIS_TAG.bin
 
 deploy:

README.md

@@ -72,9 +72,8 @@ Simple? Oh yeah!
 
 Like it? Check more [examples](https://github.com/belyalov/tinyweb/tree/master/examples) then :)
 
-### Limitation / Known issues
+### Limitations
 * HTTP protocol support - due to memory constrains only **HTTP/1.0** is supported (with exception for REST API - it uses HTTP/1.1 with `Connection: close`). Support of HTTP/1.1 may be added when `esp8266` platform will be completely deprecated.
-* [esp8266: socket accept() does not always accept](https://github.com/micropython/micropython/issues/2490) - sometimes whenever you're opening connection simultaneously some of them will never be accepted. Therefore it is strongly recommended to pack all your data (like `css`, `js`) into single html page.
 
 ### Reference
 #### class `webserver`

test/test_server.py

@@ -14,9 +14,17 @@
 from tinyweb.server import request, HTTPException
 
 
-# HTTP headers helpers
+# Helper to delete file
+def delete_file(fn):
+    # "unlink" gets renamed to "remove" in micropython,
+    # so support both
+    if hasattr(os, 'unlink'):
+        os.unlink(fn)
+    else:
+        os.remove(fn)
 
 
+# HTTP headers helpers
 def HDR(str):
     return '{}\r\n'.format(str)
 
@@ -774,7 +782,7 @@ def setUp(self):
 
     def tearDown(self):
         try:
-            os.unlink(self.tempfn)
+            delete_file(self.tempfn)
         except OSError:
             pass
 
@@ -812,7 +820,7 @@ def testSendFileNotFound(self):
         wrt = mockWriter()
 
         # Intentionally delete file before request
-        os.unlink(self.tempfn)
+        delete_file(self.tempfn)
         run_coro(self.srv._handler(rdr, wrt))
 
         exp = ['HTTP/1.0 404 MSG\r\n\r\n']