Using the Lua Socket library I want to send a get request to an API, but everytime I do so it just returns segmentation fault and I can't figure out why!
local http = require("socket.http")
local data = {
id = "1234"
}
local response = http.request {
method = "GET",
headers = {["Content-Type"]="application/json"},
url = 'http://example.com/api/',
data = data
}
local tokenResponse = json.parse(response.content)
Doesn't matter how I try it, always returns segmentation fault. Any clues why?
I'm running on Debian 8.6 Jessie.
Related
So I am trying to send a message to a discord webhook in Lua.
Currently I have this code:
local http = require("socket.http")
ltn12 = require("ltn12")
local payload = [[ {"username":"NAME","avatar_url":"","content":"MESSAGE"} ]]
http.request
{
url = "https://discordapp.com/api/webhooks/<redacted>",
method = "POST",
headers =
{
["Content-Type"] = "application/json",
["Content-Length"] = payload:len()
},
source = ltn12.source.string(payload),
}
That I found here: http://forum.micasaverde.com/index.php?topic=32035.0
But the message never arrives. What am I doing wrong?
Edit: I tested a bit and it seems like I get a 301 error code when I send this to the discord webhook.
I am newbie to web service. Due to requirement I have to send a file[most probably in txt format] to server through REST web service.
I am getting the exception like below.
MessageBodyWriter not found for media type=application/json, type=class gvjava.org.json.JSONObject, genericType=class gvjava.org.json.JSONObject.
Here is my web service method.
#Path("{c}")
#POST
#Produces(MediaType.APPLICATION_JSON)
#Consumes(MediaType.APPLICATION_JSON)
public String convert(#PathParam("c") JSONObject object) throws JSONException {
String result = "";
return "<ctofservice>" + "<ctofoutput>" + result + "</ctofoutput>" + "</ctofservice>";
}
Now client code is like below
JSONObject data_file = new JSONObject();
data_file.put("file_name", uploadFile.getName());
data_file.put("description", "Something about my file....");
data_file.put("file", uploadFile);
Client client = ClientBuilder.newClient();
webTarget = client.target(uploadURL).path("ctofservice").path("convert");
Response value = webTarget.request(MediaType.APPLICATION_JSON_TYPE)
.post(Entity.entity(data_file,MediaType.APPLICATION_JSON_TYPE),
Response.class);
Please help me with this.
Thanks in advance.
------------------------------------------------------------------------
As suggested by peeskillet in the answer below, I tried to send file through multipart. Still I am facing exception of no octet stream found.
Below is my rest api
#Path("{c}")
#POST
#Consumes(MediaType.MULTIPART_FORM_DATA)
public Response convert(#FormDataParam("file") FormDataContentDisposition file) {
String result = "";
Some operation with attached parameter ...
return Response.status(200).entity(result).build();
}
Here is my test client
FormDataMultiPart multiPart = new FormDataMultiPart();
multiPart.setMediaType(MediaType.MULTIPART_FORM_DATA_TYPE);
FileDataBodyPart fileDataBodyPart = new FileDataBodyPart("file",
uploadFile,MediaType.APPLICATION_OCTET_STREAM_TYPE);
multiPart.bodyPart(fileDataBodyPart);
Client client = Client.create();
WebResource webResource = client
.resource(uploadURL).path("ctofservice");
ClientResponse response = webResource.accept("application/json")
.post(ClientResponse.class,multiPart);
if (response.getStatus() != 200) {
throw new RuntimeException("Failed : HTTP error code : "
+ response.getStatus());
}
And I am getting the exception below
I am not able to understand why I need to send data as MediaType.APPLICATION_OCTET_STREAM_TYPE ? As I have used multipart as media type before ...
I appreciate your help..
Without needing to configuring anything else, the easiest way to get around this is to just use a String instead of the actual JSONObject (i.e. just passing toString())
.post(Entity.json(data_file.toString()))
The problem with using JSONObject is that there is no provider that knows how to handle the conversion. You will have the same problem on the server side, where there is no provider to handle the conversion to JSONObject. So you will need to just do
#POST
public Response post(String json) {
JSONObject jsonObject = new JSONObject(json);
}
If you really want to be able to just use JSONObject without needing to use a String, then you should check out this post.
As an aside, this is not valid JSON (it's XML)
"<ctofservice>" + "<ctofoutput>" + result + "</ctofoutput>" + "</ctofservice>"
but you are saying that the endpoint returns JSON
I need to send the image file using multipart request from Lightroom to my local web service using Lua language.
I have tested using sending headers also but not working...
I have created a function :
function testupload(filepath) --created inside LrTasks
local url = "http://localhosturl"
local mycontent = {
{
name = "lightroom_message",
value = "sent from lightroom plugin multiparta"
},
{
name = 'file',
filePath = filepath,
fileName = LrPathUtils.leafName(filepath),
contentType = 'image/jpeg'
--contentType = 'multipart/form-data'
}
}
local response, headers = LrHttp.postMultipart(url, mycontent)
end
But my web service is not getting called properly and I am using LrHttp.postMultipart() method to do so..
If I am sending just this param to web service (then working fine):
{
name = "lightroom_message",
value = "sent from lightroom plugin multiparta"
}
but when I include my file payload then its not working using pure Lua implementation.
Everything was correct but just a technical mistake...I was trying to call the testupload() function from inside LRtasks..but we dont need to call it in separate task and the function works perfect
I have set up a Service bus 1.1 for windows server and trying to access it using the following code.
var sbUriList = new List<Uri>() { new UriBuilder { Scheme = "sb", Host = ServerFQDN, Path = ServiceNamespace }.Uri };
var httpsUriList = new List<Uri>() { new UriBuilder { Scheme = "https", Host = ServerFQDN, Path = ServiceNamespace, Port = HttpPort }.Uri };
NetworkCredential credential = new NetworkCredential("<User Name>", "<Password>", "<Domain>");
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback((s, cert, chain, ssl) => { return true; });
TokenProvider tokenProvider = TokenProvider.CreateOAuthTokenProvider(httpsUriList, credential);
messageFactory = MessagingFactory.Create(sbUriList, tokenProvider);
ServiceBusConnectionStringBuilder connBuilder = new ServiceBusConnectionStringBuilder();
connBuilder.ManagementPort = HttpPort;
connBuilder.RuntimePort = TcpPort;
connBuilder.Endpoints.Add(new UriBuilder() { Scheme = "sb", Host = ServerFQDN, Path = ServiceNamespace }.Uri);
connBuilder.StsEndpoints.Add(new UriBuilder() { Scheme = "https", Host = ServerFQDN, Port = HttpPort, Path = ServiceNamespace }.Uri);
namespaceManager = NamespaceManager.CreateFromConnectionString(connBuilder.ToString());
if (!namespaceManager.QueueExists(queuename))
{
namespaceManager.CreateQueue(queuename);
}
this works fine if i run my code from a console application, but however if I put this in a windows service and run it under either a Local service or Local System the code throws the following exception while trying to check if the queue exists in the following line namespaceManager.QueueExists(queuename).
Unexpected exception : System.UnauthorizedAccessException: The remote server returned an error: (401) Unauthorized. Manage claim is required for this operation..TrackingId:5be1365e-b4ae-4555-b81b-dcbef96be9d0_GIE11LT32PD622,TimeStamp:4/19/2015 3:51:28 PM ---> System.Net.WebException: The remote server returned an error: (401) Unauthorized.
at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
at Microsoft.ServiceBus.Messaging.ServiceBusResourceOperations.GetAsyncResult`1.<GetAsyncSteps>b__2d(GetAsyncResult`1 thisPtr, IAsyncResult r)
at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback(IAsyncResult result)
--- End of inner exception stack trace ---
Can someone please help me understand what I am doing wrong?
Finally found the issue in my code, thought i'll share it in case anyone else has the same issue.
my issue was that in the namespace I had not set the token as below:
namespaceManager.Settings.TokenProvider = tokenProvider;
as a result of which it was using the wrong token for connection and hence the error.
I am trying to generate the OData Proxy for the service : http://services.odata.org/Northwind/Northwind.svc/$metadata
I am using System.Data.Services.Design.EntityClassGenerator for generating the OData proxy.
When I instantiate the EntityClassGenerator and call GenerateCode the output has no errors. But there is no code in the generated proxy code.
The same code works for my own service. But when I point it to any external service the EntityClassGenerator is not working.
Here is the code :
HttpWebRequest webRequest = (HttpWebRequest)HttpWebRequest.Create(metadataEndpoint);
webRequest.Method = "GET";
webRequest.ContentType = "text/xml;encoding='utf-8";
webRequest.Proxy = (proxy != null) ? proxy : WebRequest.DefaultWebProxy;
using (WebResponse response = webRequest.GetResponse())
{
string xml = string.Empty;
XmlReaderSettings settings = new XmlReaderSettings();
using (TextReader reader = new StreamReader(response.GetResponseStream()))
{
xml = reader.ReadToEnd();
using (XmlTextReader sourceReader = new XmlTextReader(reader))
{
using (StringWriter targetWriter = new StringWriter())
{
// Generate the OData End point proxy.
EntityClassGenerator entityGenerator = new EntityClassGenerator(LanguageOption.GenerateCSharpCode);
entityGenerator.OnPropertyGenerated += new EventHandler<PropertyGeneratedEventArgs>(entityGenerator_OnPropertyGenerated);
IList<System.Data.Metadata.Edm.EdmSchemaError> errors = entityGenerator.GenerateCode(sourceReader, targetWriter, namespacename);
entityGenerator.OnPropertyGenerated -= new EventHandler<PropertyGeneratedEventArgs>(entityGenerator_OnPropertyGenerated);
odataProxyCode = targetWriter.ToString();
}
}
}
}
I found the code in the question to be a useful starting point for doing exactly what the OP was asking. So even though the OP doesn't accept answers, I'll describe the changes I made to get it to work in case it is useful to someone else.
Removed the xml = reader.ReadToEnd(); call. I assume that was for debugging purposes to look at the response from the web request, but it had the result of "emptying" the reader object of the response. That meant that there was nothing left in the reader for the GenerateCode call.
The important one: Changed the use of EntityClassGenerator to System.Data.Services.Design.EntityClassGenerator. In the code below, I included the entire name space for clarity and specificity. Based on the code in the question, it appears the OP was probably using System.Data.Entity.Design.EntityClassGenerator. I used .NET Reflector to examine datasvcutil.exe, which is a command-line utility that can generate the proxy classes. I saw that it referenced the generator in that other name space.
For figuring out the problems, I dumped the errors from the GenerateCode call. One could examine them in the debugger, but some kind of automated checking of them would be needed regardless.
Here is what I ended up with:
HttpWebRequest webRequest = (HttpWebRequest)HttpWebRequest.
Create("http://services.odata.org/Northwind/Northwind.svc/$metadata");
webRequest.Method = "GET";
webRequest.ContentType = "text/xml;encoding='utf-8";
webRequest.Proxy = WebRequest.DefaultWebProxy;
using (WebResponse response = webRequest.GetResponse())
{
using (TextReader reader = new StreamReader(response.GetResponseStream()))
{
using (XmlTextReader sourceReader = new XmlTextReader(reader))
{
using (StringWriter targetWriter = new StringWriter())
{
// Generate the OData End point proxy.
System.Data.Services.Design.EntityClassGenerator entityGenerator =
new System.Data.Services.Design.EntityClassGenerator(
System.Data.Services.Design.LanguageOption.GenerateCSharpCode);
IList<System.Data.Metadata.Edm.EdmSchemaError> errors =
entityGenerator.GenerateCode(sourceReader, targetWriter,
"My.Model.Entities");
foreach (System.Data.Metadata.Edm.EdmSchemaError error in errors)
Console.WriteLine("{0}: {1}", error.Severity.ToString(), error.Message);
string odataProxyCode = targetWriter.ToString();
}
}
}
}