Grunt Server connect proxy getting 504 after a POST - gruntjs

Question

Having a bit of a problem with Grunt server using proxies.
I have everything working fine, however, when I submit a post request I get a 200 success from my proxy.
Then with each subsequent use of that proxy I get a 504 Gateway Timeout.
For instance if I post to student-minors proxy it goes through fine.
Every time after that I get a 504 when I try to do something else with that proxy.
I can use the other proxies with a get, I can get terms and courses.
Seems like something is either hanging, throwing an error of some kind, but I can't see it.
Any insight would be appreciated.
Here is a snippet of the connect server with the proxy stuff
// Define the configuration for all the tasks
grunt.initConfig({
connect: {
rules: [
{from: '^/poc-proxy/(.*)$', to: '/authorizations/$1'},
{from: '^/service/apis/terms/(.*)$', to: '/terms/$1'},
{from: '^/service/apis/courses/(.*)$', to: '/courses/$1'},
{from: '^/service/apis/studentMinors/(.*)$', to: '/studentMinors/$1'}
],
server: {
options: {
port: 9000,
base: 'dev',
hostname: 'localhost',
middleware: function (connect, res,options, middlewares) {
return [
rewriteRules,
serveStatic('./dev'),
require('grunt-middleware-proxy/lib/Utils').getProxyMiddleware()
]
}
},
proxies: [{
context: '/authorizations', //REQUIRED! Must start with a '/' should not end with a '/'
host: 'authorizations.com', //REQUIRED! Should not contain 'http://' or 'https://'
changeOrigin: true,
https: true,//Optional, defaults to false
headers: {//Optional.
'Access-Control-Allow-Origin': '*'
}
},
{
context: '/terms', //REQUIRED! Must start with a '/' should not end with a '/'
host: 'terms.com', //REQUIRED! Should not contain 'http://' or 'https://'
changeOrigin: true,
https: true,//Optional, defaults to false
headers: {//Optional.
'Access-Control-Allow-Origin': '*'
}
},
{
context: '/courses', //REQUIRED! Must start with a '/' should not end with a '/'
host: 'courses.com', //REQUIRED! Should not contain 'http://' or 'https://'
changeOrigin: true,
https: true,//Optional, defaults to false
headers: {//Optional.
'Access-Control-Allow-Origin': '*'
}
},
{
context: '/studentMinors', //REQUIRED! Must start with a '/' should not end with a '/'
host: 'minors.com', //REQUIRED! Should not contain 'http://' or 'https://'
https: true,
changeOrigin: true,
headers: {//Optional.
'Access-Control-Allow-Origin': '*'
}
}
]
}
},

Answer 1

Changed the server options.
server: {
options: {
port: 9000,
base: 'dev',
hostname: 'localhost',
middleware: function (connect, res,options, middlewares) {
return [
rewriteRules,
serveStatic('./dev'),
//require('grunt-middleware-proxy/lib/Utils').getProxyMiddleware()
require('grunt-connect-proxy/lib/utils').proxyRequest
]
}
},
Changed the task run
grunt.registerTask('serve', 'start the server and preview your app', function (target) {
if (target === 'dist') {
return grunt.task.run(['build', 'browserSync:dist']);
}
grunt.task.run([
'configureRewriteRules',
//'setupProxies:server',
'configureProxies:server',
'connect:server',
'clean:server',
'wiredep',
'concurrent:server',
'postcss:dev',
'copy:dev',
//'browserSync:livereload', //Browsersync a proxy servers conflict with CORS
'watch'
]);
});