Use Local Copy of rs-conn Script

Heroku Deploy Buttons do not currently support Git Submodules, which we need in order to pull the latest version of the rs-conn script automagically.

Procfile

@@ -1 +1 @@
-web: ./sputnik/sockets-connect/rs-conn python3 sputnik
+web: ./sputnik/vendor/rs-conn python3 sputnik

sputnik/vendor/rs-conn

@@ -0,0 +1,164 @@
+#!/bin/bash
+
+# Argument = -t test -r server -p password -v
+
+usage()
+{
+cat << EOF
+usage: $0 options {cmd}
+
+Run an app over a RuppellSok tunnel.
+
+OPTIONS:
+   -h      Show this message
+   -r      tunnel URI
+   -f      Frontend port to connect your app to
+   -b      Port your app runs on (defaults to 1337)
+   -v      Verbose
+EOF
+}
+
+TUNNEL_URI=
+FRONTEND_URI=
+BACKEND_PORT=
+VERBOSE=
+
+while getopts “hr:f:b:v” OPTION
+do
+    case $OPTION in
+        h)
+            usage
+            exit 1
+            ;;
+        r)
+            TUNNEL_URI=$OPTARG
+            ;;
+        f)
+            FRONTEND_URI=$OPTARG
+            ;;
+        b)
+            BACKEND_PORT=$OPTARG
+            ;;
+        v)
+            VERBOSE=1
+            ;;
+        ?)
+            usage
+            exit
+            ;;
+    esac
+done
+
+CMD=${@:$OPTIND:$#}
+
+if [[ -z $CMD ]]
+then
+    usage
+    exit 1
+fi
+
+if [[ -z $FRONTEND_URI && -z $RUPPELLS_SOCKETS_FRONTEND_URI && -z $TUNNEL_URI && -z $RUPPELLS_SOCKETS_TUNNEL_URI ]]
+then
+    echo "No frontend or tunnel URI defined, falling back to dev mode."
+    echo " You can connect to your app on localhost:10000"
+    BACKEND_PORT=10000
+    DEV_MODE=true
+else
+    if [[ -z $FRONTEND_URI ]]
+    then
+        if [[ -z $RUPPELLS_SOCKETS_FRONTEND_URI ]]
+        then
+            usage
+            exit 1
+        fi
+        FRONTEND_URI=$RUPPELLS_SOCKETS_FRONTEND_URI
+    fi
+    FRONTEND_PORT=${FRONTEND_URI##tcp://}; FRONTEND_PORT=${FRONTEND_PORT#*:}; FRONTEND_PORT=${FRONTEND_PORT%*/}
+
+    if [[ -z $BACKEND_PORT ]]
+    then
+        BACKEND_PORT=1337
+    fi
+
+    if [[ -z $TUNNEL_URI ]]
+    then
+        if [[ -z $RUPPELLS_SOCKETS_TUNNEL_URI ]]
+        then
+            usage
+            exit 1
+        fi
+        TUNNEL_URI=$RUPPELLS_SOCKETS_TUNNEL_URI
+    fi
+
+    # kudos - https://gist.github.com/cdown/1163649
+    urlencode() {
+        # urlencode <string>
+        local length="${#1}"
+        for (( i = 0 ; i < length ; i++ )); do
+            local c="${1:i:1}"
+            case "$c" in
+                [a-zA-Z0-9.~_-]) printf "$c" ;;
+                ' ') printf + ;;
+                *) printf '%%%X' "'$c"
+            esac
+        done
+    }
+
+    urldecode() {
+        # urldecode <string>
+        local url_encoded=${1//+/ }
+        printf '%b' "${url_encoded//%/\\x}"
+    }
+
+    SSH_AUTH=${TUNNEL_URI##ssh://} ; SSH_AUTH=${SSH_AUTH%@*}
+    SSH_USER=${SSH_AUTH%:*}
+    urldecode ${SSH_AUTH#*:} > /tmp/$$.key
+    chmod 600 /tmp/$$.key
+
+    SSH_ENDPOINT=${TUNNEL_URI##ssh://*@}
+    SSH_HOST=${SSH_ENDPOINT%:*}
+    SSH_PORT=${SSH_ENDPOINT#*:}
+fi
+
+function sigtermed()
+{
+    if [[ $VERBOSE ]] ; then echo "forwarding SIGTERM to children" ; fi
+    kill -SIGTERM $CMDPID 2>/dev/null
+    (sleep 10 ; kill -0 $CMDPID ; if [[ $? ]]; then kill -9 $CMDPID ; fi ; ) & KILLER_PID=$!
+    wait $CMDPID 2>/dev/null
+    CMDEXIT=$?
+    kill $KILLER_PID 2>/dev/null
+    exit $CMDEXIT
+}
+
+function finish()
+{
+    EXIT_CODE=$?
+    kill -9 $SSHPID 2>/dev/null
+    rm /tmp/$$.key
+    exit $EXIT_CODE
+}
+
+trap sigtermed SIGTERM SIGINT
+trap finish EXIT
+
+if [[ -z $DEV_MODE ]]
+then
+    echo -n "Connecting tcp://localhost:${BACKEND_PORT}/ to ${FRONTEND_URI}... "
+    ssh -o LogLevel=quiet -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o TCPKeepAlive=yes -nN -i /tmp/$$.key -R $FRONTEND_PORT:127.0.2.1:$BACKEND_PORT -l $SSH_USER $SSH_HOST $KEY_CMD -p $SSH_PORT & SSHPID=$!
+    echo "done"
+fi
+echo -n "Running ${CMD}... "
+RUPPELLS_SOCKETS_LOCAL_PORT=$BACKEND_PORT $CMD & CMDPID=$!
+echo "done"
+
+if [[ -z $DEV_MODE ]]
+then
+    while $(kill -0 $CMDPID) && $(kill -0 $SSHPID); do
+        sleep 0.5
+    done
+else
+    while $(kill -0 $CMDPID); do
+        sleep 0.5
+    done
+fi