Add GRPC KeepAlive and SSL sections to server docs (triton-inference-…

…server#3149)

* Add initial GRPC KeepAlive and SSL sections to server docs

* Point to client docs from server docs

* Add documentation on grpc compression and authetication options

* Fixing the links

* Add code blocks, add grpc keepalive param list, point to client documentation

* fix links

Co-authored-by: Tanmay Verma <tanmay2592@gmail.com>

docs/inference_protocols.md

@@ -1,5 +1,5 @@
 <!--
-# Copyright (c) 2018-2020, NVIDIA CORPORATION. All rights reserved.
+# Copyright (c) 2018-2021, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
@@ -47,6 +47,49 @@ model health, metadata and statistics. Additional endpoints allow
 model loading and unloading, and inferencing. See the KFServing and
 extension documentation for details.
 
+### GRPC Options
+Triton exposes various GRPC parameters for configuring the server-client network transactions. For usage of these options, refer to the output from `tritonserver --help`.
+
+#### SSL/TLS
+
+These options can be used to configure a secured channel for communication. The server-side options include:
+
+* `--grpc-use-ssl`
+* `--grpc-use-ssl-mutual`
+* `--grpc-server-cert`
+* `--grpc-server-key`
+* `--grpc-root-cert`
+
+For client-side documentation, see [Client-Side GRPC SSL/TLS](https://github.com/triton-inference-server/client/tree/main#ssltls)
+
+For more details on overview of authentication in gRPC, refer [here](https://grpc.io/docs/guides/auth/).
+
+#### Compression
+
+Triton allows the on-wire compression of request/response messages by exposing following option on server-side:
+
+* `--grpc-infer-response-compression-level`
+
+For client-side documentation, see [Client-Side GRPC Compression](https://github.com/triton-inference-server/client/tree/main#compression)
+
+Compression can be used to reduce the amount of bandwidth used in server-client communication. For more details, see [gRPC Compression](https://grpc.github.io/grpc/core/md_doc_compression.html). 
+
+#### GRPC KeepAlive
+
+Triton exposes GRPC KeepAlive parameters with the default values for both
+client and server described [here](https://github.com/grpc/grpc/blob/master/doc/keepalive.md).
+
+These options can be used to configure the KeepAlive settings:
+
+* `--grpc-keepalive-time`
+* `--grpc-keepalive-timeout`
+* `--grpc-keepalive-permit-without-calls`
+* `--grpc-http2-max-pings-without-data`
+* `--grpc-http2-min-recv-ping-interval-without-data`
+* `--grpc-http2-max-ping-strikes`
+
+For client-side documentation, see [Client-Side GRPC KeepAlive](https://github.com/triton-inference-server/client/blob/main/README.md#grpc-keepalive).
+
 ## C API
 
 The Triton Inference Server provides a backwards-compatible C API that