Fix links

Author: philipbl

Makefile

@@ -10,4 +10,4 @@ build: install
 	bundle exec jekyll build
 
 check_links: build
-	bundle exec htmlproofer --ignore_empty_alt true --ignore_missing_alt true --swap-urls "^\/426:" --allow_missing_href=true --ignore-status-codes "0,301,403,999" ./_site
+	bundle exec htmlproofer --ignore_empty_alt --ignore_missing_alt --swap-urls "^\/426:" --allow_missing_href --ignore-status-codes "0,301,403,999" ./_site

_labs/http-server.md

@@ -112,7 +112,7 @@ To submit your code, upload it to Gradescope.
 
 - [HTTP Specification](https://tools.ietf.org/html/rfc7230)
 
-- [HTTP Wikipedia Article](https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol#Message_format)
+- [HTTP Wikipedia Article](https://en.wikipedia.org/wiki/HTTP#HTTP/1.1_response_messages)
 
 - [How to get file size in Python?](https://www.geeksforgeeks.org/how-to-get-file-size-in-python/)
 

_labs/tcp-client-v1.md

@@ -127,7 +127,7 @@ To submit your code, upload it to Gradescope.
 - [Guide on socket programming](https://beej.us/guide/bgnet/html/)
 
 - `stderr` and `stdout`
-    - [Tutorial](http://www.learnlinux.org.za/courses/build/shell-scripting/ch01s04.html)
+    - [Tutorial](https://www.learnlinux.org.za/courses/build/shell-scripting/ch01s04.html)
     - [`stderr` vs `stdout`](https://stackoverflow.com/questions/3385201/confused-about-stdin-stdout-and-stderr)
     - [Redirect `stderror`](https://askubuntu.com/questions/625224/how-to-redirect-stderr-to-a-file)
 

_labs/tcp-client-v2.md

@@ -136,9 +136,9 @@ To submit your code, upload it to Gradescope.
 
 - [Calculate length of string `sprintf` will generate](https://stackoverflow.com/questions/29087129/how-to-calculate-the-length-of-output-that-sprintf-will-generate)
 
-- [strchr](http://www.cplusplus.com/reference/cstring/strchr/)
+- [strchr](https://www.cplusplus.com/reference/cstring/strchr/)
 
-- It might be helpful to use [`sscanf`](http://www.cplusplus.com/reference/cstdio/sscanf/) to separate the action from the message and [strip off the newline character](https://stackoverflow.com/questions/39431924/what-does-n-mean-in-c).
+- It might be helpful to use [`sscanf`](https://www.cplusplus.com/reference/cstdio/sscanf/) to separate the action from the message and [strip off the newline character](https://stackoverflow.com/questions/39431924/what-does-n-mean-in-c).
 
 - Memory management
     - [malloc](https://en.cppreference.com/w/c/memory/malloc)
@@ -152,8 +152,8 @@ To submit your code, upload it to Gradescope.
 - [Function pointers](https://www.learn-c.org/en/Function_Pointers)
 
 - File IO
-    - [fopen](http://www.cplusplus.com/reference/cstdio/fopen/)
+    - [fopen](https://www.cplusplus.com/reference/cstdio/fopen/)
 
-    - [fread](http://www.cplusplus.com/reference/cstdio/fread/)
+    - [fread](https://www.cplusplus.com/reference/cstdio/fread/)
 
     - [getline](https://linux.die.net/man/3/getline)

_labs/tcp-client-v3.md

@@ -154,4 +154,4 @@ To submit your code, upload it to Gradescope.
 - [C bit fields](https://www.tutorialspoint.com/cprogramming/c_bit_fields.htm)
   - [Reference](https://en.cppreference.com/w/cpp/language/bit_field)
   - Stack Overflow: [here](https://stackoverflow.com/questions/20911460/bit-fields-in-c-and-c-where-are-they-used) and [here](https://stackoverflow.com/questions/24933242/when-to-use-bit-fields-in-c)
-  - [Deep dive](http://www.catb.org/esr/structure-packing/)
+  - [Deep dive](https://www.catb.org/esr/structure-packing/)

_pages/resources.md

@@ -11,8 +11,8 @@ The class has one required textbook: ***Computer Networking: A Top-Down Approach
 
 The book comes with some online tools to help you understand the material:
 
-- [Powerpoint Slides](http://gaia.cs.umass.edu/kurose_ross/ppt.htm)
-- [Interactive Problems](http://gaia.cs.umass.edu/kurose_ross/interactive/)
+- [Powerpoint Slides](https://gaia.cs.umass.edu/kurose_ross/ppt.htm)
+- [Interactive Problems](https://gaia.cs.umass.edu/kurose_ross/interactive/)
 
 
 ### Learning Resources
@@ -38,7 +38,7 @@ Here are some other resources that might help you:
 
 There are a few tools that will be invaluable when debugging your labs.
 
-- [netcat (nc)](http://netcat.sourceforge.net)
+- [netcat (nc)](https://netcat.sourceforge.net)
 : This is a good tool for basic TCP and UDP socket debugging. It can connect to a socket or act as a socket server. It will show you all the raw data that is sent and received.
 
 - [Wireshark](https://www.wireshark.org)