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Diff: README.md
- Revision:
- 5:2456c90f02e9
- Parent:
- 0:910f5949759f
- Child:
- 12:530c2ebee349
diff -r 539df159e058 -r 2456c90f02e9 README.md
--- a/README.md Thu Feb 23 13:50:43 2017 +0100
+++ b/README.md Thu Feb 23 13:56:17 2017 +0100
@@ -9,13 +9,15 @@
const char body[] = "{\"hello\":\"world\"}";
-HttpRequest request(network, HTTP_POST, "http://httpbin.org/post");
-request.set_header("Content-Type", "application/json);
-HttpResponse* response = request.send(body, strlen(body));
+HttpRequest* request = new HttpRequest(network, HTTP_POST, "http://httpbin.org/post");
+request->set_header("Content-Type", "application/json");
+HttpResponse* response = request->send(body, strlen(body));
// if response is NULL, check response->get_error()
printf("status is %d - %s\n", response->get_status_code(), response->get_status_message());
-printf("body is:\n%s\n", response->get_body().c_str());
+printf("body is:\n%s\n", response->get_body_as_string().c_str());
+
+delete request; // also clears out the response
```
## HTTPS Request API
@@ -29,24 +31,27 @@
const char body[] = "{\"hello\":\"world\"}";
-HttpsRequest request(network, SSL_CA_PEM, HTTP_GET "https://httpbin.org/status/418");
-HttpResponse* response = request.send();
+HttpsRequest* request = new HttpsRequest(network, SSL_CA_PEM, HTTP_GET "https://httpbin.org/status/418");
+HttpResponse* response = request->send();
// if response is NULL, check response->get_error()
printf("status is %d - %s\n", response->get_status_code(), response->get_status_message());
printf("body is:\n%s\n", response->get_body().c_str());
+
+delete request;
```
## Dealing with large body
-By default the library will store the full request body on the stack. This works well for small responses, but you'll run out of memory when receiving a large response body. To mitigate this you can pass in a callback as the last argument to the request constructor. This callback will be called whenever a chunk of the body is received. You can set the request chunk size in the `HTTP_RECEIVE_BUFFER_SIZE` macro (see `mbed_lib.json` for the definition).
+By default the library will store the full request body on the heap. This works well for small responses, but you'll run out of memory when receiving a large response body. To mitigate this you can pass in a callback as the last argument to the request constructor. This callback will be called whenever a chunk of the body is received. You can set the request chunk size in the `HTTP_RECEIVE_BUFFER_SIZE` macro (see `mbed_lib.json` for the definition) although it also depends on the buffer size of the underlying network connection.
```cpp
void body_callback(const char* data, size_t data_len) {
// do something with the data
}
-HttpRequest req(network, HTTP_GET, "http://pathtolargefile.com");
+HttpRequest* req = new HttpRequest(network, HTTP_GET, "http://pathtolargefile.com");
+req->send(NULL, 0, body_callback);
```
## Tested on
