USBMUX keeps returning a broken pipe error

[wtibbitts]

I'm working with some code that is used to fetch mdm profiles from a device and do some additional configuring. It uses the device_ink_service to send a request to list profiles, but it always get a broken pipe error. I have tried adding device_link_service_send_ping() call before the request to check the state, but that also returns a broken pipe error.

The client is created with:

LIBIMOBILEDEVICE_API mobileconfig_error_t mobileconfig_client_new(idevice_t device, lockdownd_service_descriptor_t service, mobileconfig_client_t * client) {
    debug_info("mobileconfig_client_new\n");
    if (!device || !service || service->port == 0 || !client || *client)
        return MOBILECONFIG_E_INVALID_ARG;

    device_link_service_client_t dlclient = NULL;
    mobileconfig_error_t ret = mobileconfig_error(device_link_service_client_new(device, service, &dlclient));

    if (ret != MOBILECONFIG_E_SUCCESS) {
        fprintf(stderr,"ret: %d\n", ret);
        return ret;
    }

    mobileconfig_client_t client_loc = (mobileconfig_client_t) malloc(sizeof(struct mobileconfig_client_private));
    client_loc->parent = dlclient;

    *client = client_loc;
    return ret;
}

Below are the debug logs from the request

14:10:07 lockdown.c:434 lockdownd_get_value(): success
14:10:07 lockdown.c:445 lockdownd_get_value(): has a value
14:10:07 property_list_service.c:132 internal_plist_send(): sending 100 bytes
14:10:07 service.c:144 service_send(): sending 4 bytes
14:10:07 idevice.c:653 internal_connection_send(): ERROR: usbmuxd_send returned -32 (Broken pipe)
14:10:07 idevice.c:723 idevice_connection_send(): internal_connection_send 4, sent 0
14:10:07 service.c:147 service_send(): ERROR: sending to device failed.
14:10:07 property_list_service.c:147 internal_plist_send(): ERROR: sending to device failed.
14:10:07 mobileconfig.c:240 mobileconfig_send_list_profile_request(): ping resp: -3
14:10:07 mobileconfig.c:244 mobileconfig_send_list_profile_request(): property list dict before:

could not read data, res: -256<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>RequestType</key>
	<string>GetProfileList</string>
</dict>
</plist>

14:10:07 property_list_service.c:132 internal_plist_send(): sending 245 bytes
14:10:07 service.c:144 service_send(): sending 4 bytes
14:10:07 idevice.c:653 internal_connection_send(): ERROR: usbmuxd_send returned -32 (Broken pipe)
14:10:07 idevice.c:723 idevice_connection_send(): internal_connection_send 4, sent 0
14:10:07 service.c:147 service_send(): ERROR: sending to device failed.
14:10:07 property_list_service.c:147 internal_plist_send(): ERROR: sending to device failed.
14:10:07 mobileconfig.c:337 mobileconfig_receive(): mobileconfig_receive
14:10:07 idevice.c:769 internal_connection_receive_timeout(): ERROR: usbmuxd_recv_timeout returned -54 (Connection reset by peer)
14:10:07 service.c:167 service_receive_with_timeout(): could not read data
14:10:07 property_list_service.c:197 internal_plist_receive_timeout(): initial read failed!
pls receive plist err: -256
plist or *plist is NULL
received mc ret: -2
mdm_ret: -2
could not read data, res: -256

How do I fix this broken pipe error?