Use code type highlight for the code blocks in the cpp helloworld
example README.md
..
diff --git a/examples/cpp/helloworld/README.md b/examples/cpp/helloworld/README.md
index 7a7194d..90f3d6b 100644
--- a/examples/cpp/helloworld/README.md
+++ b/examples/cpp/helloworld/README.md
@@ -41,7 +41,7 @@
a greeting in a single `HelloReply`. This is the simplest type of RPC you
can specify in gRPC - we'll look at some other types later in this document.
-```
+```protobuf
syntax = "proto3";
option java_package = "ex.grpc";
@@ -93,20 +93,20 @@
channel can be created with the target address, credentials to use and
arguments as follows
- ```
+ ```cpp
auto channel = CreateChannel("localhost:50051", InsecureChannelCredentials());
```
- Create a stub. A stub implements the rpc methods of a service and in the
generated code, a method is provided to created a stub with a channel:
- ```
+ ```cpp
auto stub = helloworld::Greeter::NewStub(channel);
```
- Make a unary rpc, with `ClientContext` and request/response proto messages.
- ```
+ ```cpp
ClientContext context;
HelloRequest request;
request.set_name("hello");
@@ -116,7 +116,7 @@
- Check returned status and response.
- ```
+ ```cpp
if (status.ok()) {
// check reply.message()
} else {
@@ -130,7 +130,7 @@
- Implement the service interface
- ```
+ ```cpp
class GreeterServiceImpl final : public Greeter::Service {
Status SayHello(ServerContext* context, const HelloRequest* request,
HelloReply* reply) override {
@@ -144,7 +144,7 @@
- Build a server exporting the service
- ```
+ ```cpp
GreeterServiceImpl service;
ServerBuilder builder;
builder.AddListeningPort("0.0.0.0:50051", grpc::InsecureServerCredentials());
@@ -170,14 +170,14 @@
- Initiate the rpc and create a handle for the rpc. Bind the rpc to a
`CompletionQueue`.
- ```
+ ```cpp
CompletionQueue cq;
auto rpc = stub->AsyncSayHello(&context, request, &cq);
```
- Ask for reply and final status, with a unique tag
- ```
+ ```cpp
Status status;
rpc->Finish(&reply, &status, (void*)1);
```
@@ -185,7 +185,7 @@
- Wait for the completion queue to return the next tag. The reply and status are
ready once the tag passed into the corresponding `Finish()` call is returned.
- ```
+ ```cpp
void* got_tag;
bool ok = false;
cq.Next(&got_tag, &ok);
@@ -203,7 +203,7 @@
- Build a server exporting the async service
- ```
+ ```cpp
helloworld::Greeter::AsyncService service;
ServerBuilder builder;
builder.AddListeningPort("0.0.0.0:50051", InsecureServerCredentials());
@@ -214,7 +214,7 @@
- Request one rpc
- ```
+ ```cpp
ServerContext context;
HelloRequest request;
ServerAsyncResponseWriter<HelloReply> responder;
@@ -224,7 +224,7 @@
- Wait for the completion queue to return the tag. The context, request and
responder are ready once the tag is retrieved.
- ```
+ ```cpp
HelloReply reply;
Status status;
void* got_tag;
@@ -239,7 +239,7 @@
- Wait for the completion queue to return the tag. The rpc is finished when the
tag is back.
- ```
+ ```cpp
void* got_tag;
bool ok = false;
cq.Next(&got_tag, &ok);
