<p>The instance being checked. The protocol is either TCP, HTTP, HTTPS, or SSL. The range of valid ports is one (1) through 65535.</p> <p>TCP is the default, specified as a TCP: port pair, for example "TCP:5000". In this case, a health check simply attempts to open a TCP connection to the instance on the specified port. Failure to connect within the configured timeout is considered unhealthy.</p> <p>SSL is also specified as SSL: port pair, for example, SSL:5000.</p> <p>For HTTP/HTTPS, you must include a ping path in the string. HTTP is specified as a HTTP:port;/;PathToPing; grouping, for example "HTTP:80/weather/us/wa/seattle". In this case, a HTTP GET request is issued to the instance on the given port and path. Any answer other than "200 OK" within the timeout period is considered unhealthy.</p> <p>The total length of the HTTP ping target must be 1024 16-bit Unicode characters or less.</p>

<p>The amount of time, in seconds, during which no response means a failed health check.</p> <p>This value must be less than the <code>Interval</code> value.</p>