(*) Added instructions for generating ssl files on macOS

Author: flavioheleno

README.md

@@ -31,11 +31,13 @@ $ ./vendor/bin/http_test_server > /dev/null 2>&1 &
 Then generate ssh certificates:
 
 ```bash
-$ cd ./tests/server/ssl 
+$ cd ./tests/server/ssl
 $ ./generate.sh
-$ cd ../../../ 
+$ cd ../../../
 ```
 
+Note: If you are running this on macOS and get the following error: "Error opening CA Private Key privkey.pem", check [this](ssl-macOS.md) file.
+
 Now run the test suite:
 
 ``` bash

ssl-macOS.md

@@ -0,0 +1,58 @@
+# Generating SSL Certificates on macOS
+
+When generating SSL Certificates on macOS, you must ensure that you're using brew's openssl binary and not the one provided by the OS.
+
+To do that, find out where your openssl is installed by running:
+
+```bash
+$ brew info openssl
+```
+
+You should see something like this:
+
+```
+[email protected]: stable 1.1.1i (bottled) [keg-only]
+Cryptography and SSL/TLS Toolkit
+https://openssl.org/
+/usr/local/Cellar/[email protected]/1.1.1i (8,067 files, 18.5MB)
+  Poured from bottle on 2020-12-11 at 11:31:46
+From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/[email protected]
+License: OpenSSL
+==> Caveats
+A CA file has been bootstrapped using certificates from the system
+keychain. To add additional certificates, place .pem files in
+  /usr/local/etc/[email protected]/certs
+
+and run
+  /usr/local/opt/[email protected]/bin/c_rehash
+
+[email protected] is keg-only, which means it was not symlinked into /usr/local,
+because macOS provides LibreSSL.
+
+If you need to have [email protected] first in your PATH run:
+  echo 'export PATH="/usr/local/opt/[email protected]/bin:$PATH"' >> /Users/flavio/.bash_profile
+
+For compilers to find [email protected] you may need to set:
+  export LDFLAGS="-L/usr/local/opt/[email protected]/lib"
+  export CPPFLAGS="-I/usr/local/opt/[email protected]/include"
+
+For pkg-config to find [email protected] you may need to set:
+  export PKG_CONFIG_PATH="/usr/local/opt/[email protected]/lib/pkgconfig"
+
+==> Analytics
+install: 855,315 (30 days), 2,356,331 (90 days), 7,826,269 (365 days)
+install-on-request: 139,236 (30 days), 373,801 (90 days), 1,120,685 (365 days)
+build-error: 0 (30 days)
+```
+
+The important part is this:
+
+> echo 'export PATH="/usr/local/opt/[email protected]/bin:$PATH"' >> /Users/flavio/.bash_profile
+
+Instead of running `./tests/server/ssl/generate.sh`, you should instead run:
+
+```bash
+$ PATH="/usr/local/opt/[email protected]/bin ./tests/server/ssl/generate.sh
+```
+
+You should now be good to go.