Hello all,
I'm playing with the REST interface functionality of vibe.d and have got stuck on what seems like a simple problem: to create a POST request where the server returns back the data contained in the body of the POST request itself.
However, I always wind up with 400 Bad Request errors, with the claim that the request body does not contain a valid JSON value.
Here's my interface and implementation:
interface MyRestInterface
{
string post (string data);
}
class MyRestImplementation : MyRestInterface
{
string post (string data)
{
if (data is null) return "hello!";
return data ~ data;
}
}
and then in my main function:
auto myRestInterface = new MyRestImplementation;
auto router = new URLRouter;
registerRestInterface(router, myRestInterface);
auto settings = new HTTPServerSettings;
settings.port = httpPort;
settings.bindAddresses = ["::1", "127.0.0.1"];
listenHTTP(settings, router);
Sample behaviour when trying to send a POST request using curl:
$ curl -d @post-body.txt http://localhost:8080/
400 - Bad Request
The request body does not contain a valid JSON value.
Internal error information:
vibe.http.common.HTTPStatusException@../../../../.dub/packages/vibe-d-0.7.29/source/vibe/web/rest.d(913): The request body does not contain a valid JSON value.
----------------josephcurl --trace - -d @post-body.txt http://localhost:8080/
== Info: Trying 127.0.0.1...
== Info: Connected to localhost (127.0.0.1) port 8080 (#0)
=> Send header, 148 bytes (0x94)
0000: 50 4f 53 54 20 2f 20 48 54 54 50 2f 31 2e 31 0d POST / HTTP/1.1.
0010: 0a 48 6f 73 74 3a 20 6c 6f 63 61 6c 68 6f 73 74 .Host: localhost
0020: 3a 38 30 38 30 0d 0a 55 73 65 72 2d 41 67 65 6e :8080..User-Agen
0030: 74 3a 20 63 75 72 6c 2f 37 2e 34 37 2e 30 0d 0a t: curl/7.47.0..
0040: 41 63 63 65 70 74 3a 20 2a 2f 2a 0d 0a 43 6f 6e Accept: */*..Con
0050: 74 65 6e 74 2d 4c 65 6e 67 74 68 3a 20 31 39 0d tent-Length: 19.
0060: 0a 43 6f 6e 74 65 6e 74 2d 54 79 70 65 3a 20 61 .Content-Type: a
0070: 70 70 6c 69 63 61 74 69 6f 6e 2f 78 2d 77 77 77 pplication/x-www
0080: 2d 66 6f 72 6d 2d 75 72 6c 65 6e 63 6f 64 65 64 -form-urlencoded
0090: 0d 0a 0d 0a ....
=> Send data, 19 bytes (0x13)
0000: 7b 22 64 61 74 61 22 20 3a 20 22 74 68 65 72 65 {"data" : "there
0010: 22 20 7d " }
== Info: upload completely sent off: 19 out of 19 bytes
<= Recv header, 26 bytes (0x1a)
0000: 48 54 54 50 2f 31 2e 31 20 34 30 30 20 42 61 64 HTTP/1.1 400 Bad
0010: 20 52 65 71 75 65 73 74 0d 0a Request..
<= Recv header, 23 bytes (0x17)
0000: 53 65 72 76 65 72 3a 20 76 69 62 65 2e 64 2f 30 Server: vibe.d/0
0010: 2e 37 2e 32 39 0d 0a .7.29..
<= Recv header, 37 bytes (0x25)
0000: 44 61 74 65 3a 20 54 75 65 2c 20 30 39 20 41 75 Date: Tue, 09 Au
0010: 67 20 32 30 31 36 20 31 31 3a 32 30 3a 34 35 20 g 2016 11:20:45
0020: 47 4d 54 0d 0a GMT..
<= Recv header, 24 bytes (0x18)
0000: 4b 65 65 70 2d 41 6c 69 76 65 3a 20 74 69 6d 65 Keep-Alive: time
0010: 6f 75 74 3d 31 30 0d 0a out=10..
<= Recv header, 41 bytes (0x29)
0000: 43 6f 6e 74 65 6e 74 2d 54 79 70 65 3a 20 74 65 Content-Type: te
0010: 78 74 2f 70 6c 61 69 6e 3b 20 63 68 61 72 73 65 xt/plain; charse
0020: 74 3d 55 54 46 2d 38 0d 0a t=UTF-8..
<= Recv header, 21 bytes (0x15)
0000: 43 6f 6e 74 65 6e 74 2d 4c 65 6e 67 74 68 3a 20 Content-Length:
0010: 32 37 38 0d 0a 278..
<= Recv header, 2 bytes (0x2)
0000: 0d 0a ..
<= Recv data, 278 bytes (0x116)
0000: 34 30 30 20 2d 20 42 61 64 20 52 65 71 75 65 73 400 - Bad Reques
0010: 74 0a 0a 54 68 65 20 72 65 71 75 65 73 74 20 62 t..The request b
0020: 6f 64 79 20 64 6f 65 73 20 6e 6f 74 20 63 6f 6e ody does not con
0030: 74 61 69 6e 20 61 20 76 61 6c 69 64 20 4a 53 4f tain a valid JSO
0040: 4e 20 76 61 6c 75 65 2e 0a 0a 49 6e 74 65 72 6e N value...Intern
0050: 61 6c 20 65 72 72 6f 72 20 69 6e 66 6f 72 6d 61 al error informa
0060: 74 69 6f 6e 3a 0a 76 69 62 65 2e 68 74 74 70 2e tion:.vibe.http.
0070: 63 6f 6d 6d 6f 6e 2e 48 54 54 50 53 74 61 74 75 common.HTTPStatu
0080: 73 45 78 63 65 70 74 69 6f 6e 40 2e 2e 2f 2e 2e sException@../..
0090: 2f 2e 2e 2f 2e 2e 2f 2e 64 75 62 2f 70 61 63 6b /../../.dub/pack
00a0: 61 67 65 73 2f 76 69 62 65 2d 64 2d 30 2e 37 2e ages/vibe-d-0.7.
00b0: 32 39 2f 73 6f 75 72 63 65 2f 76 69 62 65 2f 77 29/source/vibe/w
00c0: 65 62 2f 72 65 73 74 2e 64 28 39 31 33 29 3a 20 eb/rest.d(913):
00d0: 54 68 65 20 72 65 71 75 65 73 74 20 62 6f 64 79 The request body
00e0: 20 64 6f 65 73 20 6e 6f 74 20 63 6f 6e 74 61 69 does not contai
00f0: 6e 20 61 20 76 61 6c 69 64 20 4a 53 4f 4e 20 76 n a valid JSON v
0100: 61 6c 75 65 2e 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d alue..----------
0110: 2d 2d 2d 2d 2d 2d ------
400 - Bad Request
The request body does not contain a valid JSON value.
Internal error information:
vibe.http.common.HTTPStatusException@../../../../.dub/packages/vibe-d-0.7.29/source/vibe/web/rest.d(913): The request body does not contain a valid JSON value.
----------------== Info: Connection #0 to host localhost left intact
I'm feeling a bit baffled about what is expected here, so could someone shed light on what I'm doing wrong?
N.B. what I'd really like is to be able to avoid JSON (de)serialization entirely and for the REST API to just hand over the post body directly to the handling method, but IIUC the design is currently tied to JSON ... ?
Thanks in advance for any advice. I imagine this is just new user misunderstanding kind of stuff ... ? :-P
Best wishes,
-- Joe