Checkout the code in proxy.c. Basic features:
- Support only GET method of HTTP proxy protocol.
- Create a thread for each client for concurrency.
- Use a thread-safe LRU cache for web objects, with reader-first read-write lock.
Final results:
$ ./driver.sh
*** Basic ***
Starting tiny on 25137
Starting proxy on 7599
1: home.html
Fetching ./tiny/home.html into ./.proxy using the proxy
Fetching ./tiny/home.html into ./.noproxy directly from Tiny
Comparing the two files
Success: Files are identical.
2: csapp.c
Fetching ./tiny/csapp.c into ./.proxy using the proxy
Fetching ./tiny/csapp.c into ./.noproxy directly from Tiny
Comparing the two files
Success: Files are identical.
3: tiny.c
Fetching ./tiny/tiny.c into ./.proxy using the proxy
Fetching ./tiny/tiny.c into ./.noproxy directly from Tiny
Comparing the two files
Success: Files are identical.
4: godzilla.jpg
Fetching ./tiny/godzilla.jpg into ./.proxy using the proxy
Fetching ./tiny/godzilla.jpg into ./.noproxy directly from Tiny
Comparing the two files
Success: Files are identical.
5: tiny
Fetching ./tiny/tiny into ./.proxy using the proxy
Fetching ./tiny/tiny into ./.noproxy directly from Tiny
Comparing the two files
Success: Files are identical.
Killing tiny and proxy
basicScore: 40/40
*** Concurrency ***
Starting tiny on port 16239
Starting proxy on port 11217
Starting the blocking NOP server on port 22203
Trying to fetch a file from the blocking nop-server
Fetching ./tiny/home.html into ./.noproxy directly from Tiny
Fetching ./tiny/home.html into ./.proxy using the proxy
Checking whether the proxy fetch succeeded
Success: Was able to fetch tiny/home.html from the proxy.
Killing tiny, proxy, and nop-server
concurrencyScore: 15/15
*** Cache ***
Starting tiny on port 14403
Starting proxy on port 6100
Fetching ./tiny/tiny.c into ./.proxy using the proxy
Fetching ./tiny/home.html into ./.proxy using the proxy
Fetching ./tiny/csapp.c into ./.proxy using the proxy
Killing tiny
Fetching a cached copy of ./tiny/home.html into ./.noproxy
Success: Was able to fetch tiny/home.html from the cache.
Killing proxy
cacheScore: 15/15
totalScore: 70/70