Demonstration program with support for the WNC M14A2A Cellular LTE Data Module added. An additional demonstration program was also added that shows a few other features (for chunked responses).
Dependencies: easy-connect mbed-http
mbed-os-example-http(s) using WNC 14A2A Data Module
This application builds on the application provided by ARM (see https://developer.mbed.org/teams/sandbox/code/mbed-http/). It demonstrates how to make HTTP and HTTPS requests and parse the response from mbed OS 5.
There are a total of five demo's, which can be selected by modifying source/select-demo.h.
1. HTTP demo (DEMO_HTTP):
- Does a GET request to http://httpbin.org/status/418.
- Does a POST request to http://httpbin.org/post.
2. HTTPS demo (DEMO_HTTPS):
- Does a GET request to https://developer.mbed.org/media/uploads/mbed_official/hello.txt.
- Does a POST request to https://httpbin.org/post.
3. HTTP demo with socket re-use (DEMO_HTTP_SOCKET_REUSE).
- Similar to the HTTP demo but reuses the socket for all interactions
4. HTTPS demo with socket re-use (DEMO_HTTPS_SOCKET_REUSE).
- Similar to the HTTPS demo above
5. HTTP & HTTPS demo with socket re-use and chunked call-backs (DEMO_HTTPx)
- Performs the same calls via HTTP first and HTTPS second
- DOES A socket get from http://developer.mbed.org.
- Does a HTTP_GET from http://developer.mbed.org
- Does a HTTP_POST from http://httpbin.org/post
- Does a HTTP_PUT from http://httpbin.org/put
- Does a HTTP_DELETE from http://httpbin.org/delete
- Does a HTTP_GET from http://httpbin.org/stream
- Does a HTTP_GET from http://httpbin.org/get
Response parsing is done through [nodejs/http-parser](https://github.com/nodejs/http-parser).
To build
1. Open ``mbed_app.json`` and change the `network-interface` option to your connectivity method ([more info](https://github.com/ARMmbed/easy-connect)). 2. Build the project in the online compiler or using mbed CLI. 3. Flash the project to your development board. 4. Attach a serial monitor to your board to see the debug messages.
Entropy (or lack thereof)
On all platforms except the FRDM-K64F and FRDM-K22F the application is compiled without TLS entropy sources. This means that your code is inherently unsafe and should not be deployed to any production systems. To enable entropy, remove the `MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES` and `MBEDTLS_TEST_NULL_ENTROPY` macros from mbed_app.json.
Tested on
- K64F with Ethernet.
- NUCLEO_F411RE with ESP8266.
- AT&T Cellular IoT Starter Kit with WNC M14A2A Cellular Data Module
The WNCInterface class currently supports the following version(s):
- MPSS: M14A2A_v11.50.164451 APSS: M14A2A_v11.53.164451
License
This library is released under the Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License and may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
source/main-http-socket-reuse.cpp@12:4c226ca06191, 2017-03-28 (annotated)
- Committer:
- Jan Jongboom
- Date:
- Tue Mar 28 14:53:07 2017 +0200
- Revision:
- 12:4c226ca06191
Add socket reuse demo's
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Jan Jongboom |
12:4c226ca06191 | 1 | #include "select-demo.h" |
Jan Jongboom |
12:4c226ca06191 | 2 | |
Jan Jongboom |
12:4c226ca06191 | 3 | #if DEMO == DEMO_HTTP_SOCKET_REUSE |
Jan Jongboom |
12:4c226ca06191 | 4 | |
Jan Jongboom |
12:4c226ca06191 | 5 | #include "mbed.h" |
Jan Jongboom |
12:4c226ca06191 | 6 | #include "easy-connect.h" |
Jan Jongboom |
12:4c226ca06191 | 7 | #include "http_request.h" |
Jan Jongboom |
12:4c226ca06191 | 8 | |
Jan Jongboom |
12:4c226ca06191 | 9 | Serial pc(USBTX, USBRX); |
Jan Jongboom |
12:4c226ca06191 | 10 | |
Jan Jongboom |
12:4c226ca06191 | 11 | void dump_response(HttpResponse* res) { |
Jan Jongboom |
12:4c226ca06191 | 12 | printf("Status: %d - %s\n", res->get_status_code(), res->get_status_message().c_str()); |
Jan Jongboom |
12:4c226ca06191 | 13 | |
Jan Jongboom |
12:4c226ca06191 | 14 | printf("Headers:\n"); |
Jan Jongboom |
12:4c226ca06191 | 15 | for (size_t ix = 0; ix < res->get_headers_length(); ix++) { |
Jan Jongboom |
12:4c226ca06191 | 16 | printf("\t%s: %s\n", res->get_headers_fields()[ix]->c_str(), res->get_headers_values()[ix]->c_str()); |
Jan Jongboom |
12:4c226ca06191 | 17 | } |
Jan Jongboom |
12:4c226ca06191 | 18 | printf("\nBody (%d bytes):\n\n%s\n", res->get_body_length(), res->get_body_as_string().c_str()); |
Jan Jongboom |
12:4c226ca06191 | 19 | } |
Jan Jongboom |
12:4c226ca06191 | 20 | |
Jan Jongboom |
12:4c226ca06191 | 21 | int main() { |
Jan Jongboom |
12:4c226ca06191 | 22 | pc.baud(115200); |
Jan Jongboom |
12:4c226ca06191 | 23 | // Connect to the network (see mbed_app.json for the connectivity method used) |
Jan Jongboom |
12:4c226ca06191 | 24 | NetworkInterface *network = easy_connect(true); |
Jan Jongboom |
12:4c226ca06191 | 25 | if (!network) { |
Jan Jongboom |
12:4c226ca06191 | 26 | printf("Cannot connect to the network, see serial output"); |
Jan Jongboom |
12:4c226ca06191 | 27 | return 1; |
Jan Jongboom |
12:4c226ca06191 | 28 | } |
Jan Jongboom |
12:4c226ca06191 | 29 | |
Jan Jongboom |
12:4c226ca06191 | 30 | // Create a TCP socket |
Jan Jongboom |
12:4c226ca06191 | 31 | printf("\n----- Setting up TCP connection -----\n"); |
Jan Jongboom |
12:4c226ca06191 | 32 | |
Jan Jongboom |
12:4c226ca06191 | 33 | TCPSocket* socket = new TCPSocket(); |
Jan Jongboom |
12:4c226ca06191 | 34 | nsapi_error_t open_result = socket->open(network); |
Jan Jongboom |
12:4c226ca06191 | 35 | if (open_result != 0) { |
Jan Jongboom |
12:4c226ca06191 | 36 | printf("Opening TCPSocket failed... %d\n", open_result); |
Jan Jongboom |
12:4c226ca06191 | 37 | return 1; |
Jan Jongboom |
12:4c226ca06191 | 38 | } |
Jan Jongboom |
12:4c226ca06191 | 39 | |
Jan Jongboom |
12:4c226ca06191 | 40 | nsapi_error_t connect_result = socket->connect("httpbin.org", 80); |
Jan Jongboom |
12:4c226ca06191 | 41 | if (connect_result != 0) { |
Jan Jongboom |
12:4c226ca06191 | 42 | printf("Connecting over TCPSocket failed... %d\n", connect_result); |
Jan Jongboom |
12:4c226ca06191 | 43 | return 1; |
Jan Jongboom |
12:4c226ca06191 | 44 | } |
Jan Jongboom |
12:4c226ca06191 | 45 | |
Jan Jongboom |
12:4c226ca06191 | 46 | printf("Connected over TCP to httpbin.org:80\n"); |
Jan Jongboom |
12:4c226ca06191 | 47 | |
Jan Jongboom |
12:4c226ca06191 | 48 | // Do a GET request to httpbin.org |
Jan Jongboom |
12:4c226ca06191 | 49 | { |
Jan Jongboom |
12:4c226ca06191 | 50 | HttpRequest* get_req = new HttpRequest(socket, HTTP_GET, "http://httpbin.org/status/418"); |
Jan Jongboom |
12:4c226ca06191 | 51 | |
Jan Jongboom |
12:4c226ca06191 | 52 | // By default the body is automatically parsed and stored in a string, this is memory heavy. |
Jan Jongboom |
12:4c226ca06191 | 53 | // To receive chunked response, pass in a callback as third parameter to 'send'. |
Jan Jongboom |
12:4c226ca06191 | 54 | HttpResponse* get_res = get_req->send(); |
Jan Jongboom |
12:4c226ca06191 | 55 | if (!get_res) { |
Jan Jongboom |
12:4c226ca06191 | 56 | printf("HttpRequest failed (error code %d)\n", get_req->get_error()); |
Jan Jongboom |
12:4c226ca06191 | 57 | return 1; |
Jan Jongboom |
12:4c226ca06191 | 58 | } |
Jan Jongboom |
12:4c226ca06191 | 59 | |
Jan Jongboom |
12:4c226ca06191 | 60 | printf("\n----- HTTP GET response -----\n"); |
Jan Jongboom |
12:4c226ca06191 | 61 | dump_response(get_res); |
Jan Jongboom |
12:4c226ca06191 | 62 | |
Jan Jongboom |
12:4c226ca06191 | 63 | delete get_req; |
Jan Jongboom |
12:4c226ca06191 | 64 | } |
Jan Jongboom |
12:4c226ca06191 | 65 | |
Jan Jongboom |
12:4c226ca06191 | 66 | // POST request to httpbin.org |
Jan Jongboom |
12:4c226ca06191 | 67 | { |
Jan Jongboom |
12:4c226ca06191 | 68 | HttpRequest* post_req = new HttpRequest(socket, HTTP_POST, "http://httpbin.org/post"); |
Jan Jongboom |
12:4c226ca06191 | 69 | post_req->set_header("Content-Type", "application/json"); |
Jan Jongboom |
12:4c226ca06191 | 70 | |
Jan Jongboom |
12:4c226ca06191 | 71 | const char body[] = "{\"hello\":\"world\"}"; |
Jan Jongboom |
12:4c226ca06191 | 72 | |
Jan Jongboom |
12:4c226ca06191 | 73 | HttpResponse* post_res = post_req->send(body, strlen(body)); |
Jan Jongboom |
12:4c226ca06191 | 74 | if (!post_res) { |
Jan Jongboom |
12:4c226ca06191 | 75 | printf("HttpRequest failed (error code %d)\n", post_req->get_error()); |
Jan Jongboom |
12:4c226ca06191 | 76 | return 1; |
Jan Jongboom |
12:4c226ca06191 | 77 | } |
Jan Jongboom |
12:4c226ca06191 | 78 | |
Jan Jongboom |
12:4c226ca06191 | 79 | printf("\n----- HTTP POST response -----\n"); |
Jan Jongboom |
12:4c226ca06191 | 80 | dump_response(post_res); |
Jan Jongboom |
12:4c226ca06191 | 81 | |
Jan Jongboom |
12:4c226ca06191 | 82 | delete post_req; |
Jan Jongboom |
12:4c226ca06191 | 83 | } |
Jan Jongboom |
12:4c226ca06191 | 84 | |
Jan Jongboom |
12:4c226ca06191 | 85 | delete socket; |
Jan Jongboom |
12:4c226ca06191 | 86 | |
Jan Jongboom |
12:4c226ca06191 | 87 | Thread::wait(osWaitForever); |
Jan Jongboom |
12:4c226ca06191 | 88 | } |
Jan Jongboom |
12:4c226ca06191 | 89 | |
Jan Jongboom |
12:4c226ca06191 | 90 | #endif |