Hi
I’m trying to call an ASP.Net API using REST connector that return a pdf file and attach it to a process, the API is tested and works fine off bonita using Postman.
at the connector output operation I added this code :
import org.bonitasoft.engine.api.ProcessAPI
import org.bonitasoft.engine.bpm.document.Document
byte[] documentContent = bodyAsString.getBytes()
final ProcessAPI processAPI = apiAccessor.getProcessAPI()
processAPI.attachDocument(processInstanceId, "settlementReportFileInput", "merchantReport.pdf",
"application/pdf", documentContent)
return ""
when I try to run it from portal and try to download the attached file from the process overview tab, I got a pdf file that contains empty pages (same pages count as the one generated from the API 
)
when I checked the Bonita Engine Log I found these log
2018-08-12 16:36:25.555 +0200 INFO: org.bonitasoft.engine.api.impl.transaction.process.DisableProcess THREAD_ID=55 | HOSTNAME=mfarrag | TENANT_ID=1 | The user <amr> has disabled process <SettlementProcess> in version <1.0> with id <8649047722151791622>
2018-08-12 16:36:26.583 +0200 INFO: org.bonitasoft.engine.api.impl.ProcessManagementAPIImplDelegate THREAD_ID=53 | HOSTNAME=mfarrag | TENANT_ID=1 | The user <amr> has deleted process with id = <8649047722151791622>
2018-08-12 16:36:32.516 +0200 INFO: org.bonitasoft.engine.bar.BusinessArchiveServiceImpl THREAD_ID=50 | HOSTNAME=mfarrag | TENANT_ID=1 | The user <amr> has installed process <SettlementProcess> in version <1.0> with id <9199515223111361481>
2018-08-12 16:36:32.781 +0200 INFO: org.bonitasoft.engine.api.impl.transaction.process.EnableProcess THREAD_ID=48 | HOSTNAME=mfarrag | TENANT_ID=1 | The user <amr> has enabled process <SettlementProcess> in version <1.0> with id <9199515223111361481>
2018-08-12 16:36:43.122 +0200 INFO: org.bonitasoft.engine.api.impl.ProcessStarter THREAD_ID=56 | HOSTNAME=mfarrag | TENANT_ID=1 | The user <amr> has started the process instance <22014> of process <SettlementProcess> in version <1.0> and id <9199515223111361481>
2018-08-12 16:36:47.970 +0200 SEVERE: org.bonitasoft.console.common.server.servlet.ResourceServlet Error while generating the response.
org.apache.catalina.connector.ClientAbortException: java.io.IOException: An established connection was aborted by the software in your host machine
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:356)
at org.apache.catalina.connector.OutputBuffer.flushByteBuffer(OutputBuffer.java:815)
at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:310)
at org.apache.catalina.connector.OutputBuffer.flush(OutputBuffer.java:284)
at org.apache.catalina.connector.Response.flushBuffer(Response.java:541)
at org.apache.catalina.connector.ResponseFacade.flushBuffer(ResponseFacade.java:312)
at javax.servlet.ServletResponseWrapper.flushBuffer(ServletResponseWrapper.java:176)
at org.bonitasoft.console.common.server.servlet.ResourceServlet.getResourceFile(ResourceServlet.java:186)
at org.bonitasoft.console.common.server.servlet.ResourceServlet.doGet(ResourceServlet.java:88)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176)
at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:394)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.bonitasoft.console.common.server.filter.CacheFilter.proceedWithFiltering(CacheFilter.java:74)
at org.bonitasoft.console.common.server.filter.ExcludingPatternFilter.doFilter(ExcludingPatternFilter.java:48)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.bonitasoft.console.common.server.filter.ExcludingPatternFilter.excludePatternFiltering(ExcludingPatternFilter.java:53)
at org.bonitasoft.console.common.server.filter.ExcludingPatternFilter.doFilter(ExcludingPatternFilter.java:46)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException: An established connection was aborted by the software in your host machine
at sun.nio.ch.SocketDispatcher.write0(Native Method)
at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:51)
at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
at sun.nio.ch.IOUtil.write(IOUtil.java:65)
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:471)
at org.apache.tomcat.util.net.NioChannel.write(NioChannel.java:134)
at org.apache.tomcat.util.net.NioBlockingSelector.write(NioBlockingSelector.java:101)
at org.apache.tomcat.util.net.NioSelectorPool.write(NioSelectorPool.java:157)
at org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper.doWrite(NioEndpoint.java:1267)
at org.apache.tomcat.util.net.SocketWrapperBase.writeByteBufferBlocking(SocketWrapperBase.java:463)
at org.apache.tomcat.util.net.SocketWrapperBase.writeBlocking(SocketWrapperBase.java:451)
at org.apache.tomcat.util.net.SocketWrapperBase.write(SocketWrapperBase.java:388)
at org.apache.coyote.http11.Http11OutputBuffer$SocketOutputBuffer.doWrite(Http11OutputBuffer.java:644)
at org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:119)
at org.apache.coyote.http11.Http11OutputBuffer.doWrite(Http11OutputBuffer.java:235)
at org.apache.coyote.Response.doWrite(Response.java:541)
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:351)
... 45 more
2018-08-12 16:36:47.971 +0200 SEVERE: org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/bonita].[themeResource] Servlet.service() for servlet [themeResource] in context with path [/bonita] threw exception [java.io.IOException: An established connection was aborted by the software in your host machine] with root cause
java.io.IOException: An established connection was aborted by the software in your host machine
at sun.nio.ch.SocketDispatcher.write0(Native Method)
at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:51)
at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
at sun.nio.ch.IOUtil.write(IOUtil.java:65)
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:471)
at org.apache.tomcat.util.net.NioChannel.write(NioChannel.java:134)
at org.apache.tomcat.util.net.NioBlockingSelector.write(NioBlockingSelector.java:101)
at org.apache.tomcat.util.net.NioSelectorPool.write(NioSelectorPool.java:157)
at org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper.doWrite(NioEndpoint.java:1267)
at org.apache.tomcat.util.net.SocketWrapperBase.writeByteBufferBlocking(SocketWrapperBase.java:463)
at org.apache.tomcat.util.net.SocketWrapperBase.writeBlocking(SocketWrapperBase.java:451)
at org.apache.tomcat.util.net.SocketWrapperBase.write(SocketWrapperBase.java:388)
at org.apache.coyote.http11.Http11OutputBuffer$SocketOutputBuffer.doWrite(Http11OutputBuffer.java:644)
at org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:119)
at org.apache.coyote.http11.Http11OutputBuffer.doWrite(Http11OutputBuffer.java:235)
at org.apache.coyote.Response.doWrite(Response.java:541)
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:351)
at org.apache.catalina.connector.OutputBuffer.flushByteBuffer(OutputBuffer.java:815)
at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:310)
at org.apache.catalina.connector.OutputBuffer.flush(OutputBuffer.java:284)
at org.apache.catalina.connector.Response.flushBuffer(Response.java:541)
at org.apache.catalina.connector.ResponseFacade.flushBuffer(ResponseFacade.java:312)
at javax.servlet.ServletResponseWrapper.flushBuffer(ServletResponseWrapper.java:176)
at org.bonitasoft.console.common.server.servlet.ResourceServlet.getResourceFile(ResourceServlet.java:186)
at org.bonitasoft.console.common.server.servlet.ResourceServlet.doGet(ResourceServlet.java:88)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176)
at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:394)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.bonitasoft.console.common.server.filter.CacheFilter.proceedWithFiltering(CacheFilter.java:74)
at org.bonitasoft.console.common.server.filter.ExcludingPatternFilter.doFilter(ExcludingPatternFilter.java:48)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.bonitasoft.console.common.server.filter.ExcludingPatternFilter.excludePatternFiltering(ExcludingPatternFilter.java:53)
at org.bonitasoft.console.common.server.filter.ExcludingPatternFilter.doFilter(ExcludingPatternFilter.java:46)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
2018-08-12 16:36:50.691 +0200 WARNING: org.bonitasoft.connectors.rest.RESTConnector Body as map output cannot be set. Response content type is not json compliant(application/pdf).
Please help