c++ - nodejs socket.io closes connection before upgrading to websocket -

-

i'm trying write c++ client talk websocket server written using nodejs , socket.io. can't c++ client establish websocket connection; server drops connection right after client requests http connection upgraded websocket.

i used tcpdump watch packets going , forth. when use websocket server browser, works great , tcpdump output shows packets going , forth. when try connect server using c++ client, websocket connection never gets established. output tcpdump shows upgrade request being sent server followed server dropping connection.

i tried replicating sequence of events using nc. connected server (running on port 8080) , copy-pasted exact set of headers sent browser, captured tcpdump. duplicate of working headers, connection dropped.

there no output on server end indicating why connection gets dropped.

here headers sent:

get /socket.io/?type=player&eio=3&transport=websocket&sid=7mdclht_8ctsd6f4aaac http/1.1 host: localhost:8080 connection: upgrade pragma: no-cache cache-control: no-cache upgrade: websocket origin: http://localhost:8080 sec-websocket-version: 13 user-agent: mozilla/5.0 accept-encoding: gzip, deflate, sdch accept-language: en-us,en;q=0.8 cookie: io=7mdclht_8ctsd6f4aaac sec-websocket-key: nm7f0tlaggc2s6sauphwaq== sec-websocket-extensions: permessage-deflate;client_max_window_bits x-forwarded-proto: http x-forwarded-port: 80 x-forwarded-for: 127.0.0.1

i'm stumped why socket.io isn't upgrading connection. according documentation i've seen websocket protocol ought work. think can think of socket.io expecting cookie or other magic incantation client talking server.


Comments

Post a Comment

Popular posts from this blog

javascript - Laravel datatable invalid JSON response -

-
everything work fine on code below fetch user logs: js: <script> $(document).ready(function () { var table =$('#systemlogs').datatable({ responsive: true, processing: true, serverside: true, "language": { "url": "/datatables/media/plug-in/persian.json" }, ajax: '{!! url('/admin/systemlogs/data/systemlogsdatatable') !!}', columns: [ { data: 'name', name: 'name' }, { data: 'message_text', name: 'message_text' }, { data: 'remote_addr', name: 'remote_addr' }, { data: 'log_created_at', name: 'management_logs.created_at' }, { data: 'log_updated_at', name: 'management_logs.updated_at' }, ] }); }); </script> routes: route::get('/systemlogs/data/systemlogsdatatable','systemlogscontrolle...
Read more

java - Exception in thread "main" org.springframework.context.ApplicationContextException: Unable to start embedded container; -

-
i getting error when run spring application: exception in thread "main" org.springframework.context.applicationcontextexception: unable start embedded container; nested exception org.springframework.context.applicationcontextexception: unable start embeddedwebapplicationcontext due missing embeddedservletcontainerfactory bean. @ org.springframework.boot.context.embedded.embeddedwebapplicationcontext.onrefresh(embeddedwebapplicationcontext.java:124) @ org.springframework.context.support.abstractapplicationcontext.refresh(abstractapplicationcontext.java:476) @ org.springframework.boot.context.embedded.embeddedwebapplicationcontext.refresh(embeddedwebapplicationcontext.java:109) @ org.springframework.boot.springapplication.refresh(springapplication.java:691) @ org.springframework.boot.springapplication.run(springapplication.java:320) @ org.springframework.boot.springapplication.run(springapplication.java:952) @ org.springframework.boot.springa...
Read more

sql server 2008 - My Sql Code Get An Error Of Msg 245, Level 16, State 1, Line 1 Conversion failed when converting the varchar value '8:45 AM' to data type int -

-
msg 245, level 16, state 1, line 1 conversion failed when converting varchar value '8:45 am' data type int. script declare @specimenid bigint = 0, @script varchar(max); declare @starttime int = (select convert(int,substring(start_time,0,charindex(':', start_time)) - 12) appt appt._id=112601) --select @starttime set @script = 'select distinct ptlast_name + '', '' + pt.first_name patient_name, dbo.formatdate(pt.dob,''mm/dd/yyyy'') dob, (convert(varchar, (datediff(yy, dob, appt_date) - case when (month(dob) > month(appt_date)) or (month(dob) = month(appt_date) , day(dob) > day(appt_date)) 1 else 0 end)) + ''/'' + convert(varchar, (datediff(m, dateadd(yy, (datediff(yy, dob, appt_date) - case when (month(dob) > month(appt_date)) or (month(dob) = month(appt_date) , day(dob) > day(appt_date)) 1 else 0 end), d...
Read more