Fluctuation in Spotify Connection

[vgh3]

Plan

Free

Country

India

Device

Artik305

Operating System

Linux -Ubuntu with iOS app

My Question or Issue

I am using Spotify esdk 3.117. however I am getting these error. My connection is not

DBUG: 1588670347.0280 E esdk Failed to send request (error -15)
DBUG: 1588670351.0225 I esdk Requesting Bytes: 1066k => 1578k +512k (used: 752k, buf: 1699k, thres: 1571k, rate: 96k)
DBUG: 1588670351.0257 E esdk Failed to send request (error -15)
DBUG: 1588670351.0278 E esdk error -22
DBUG: 1588670351.0278 E esdk error -22
DBUG: 1588670351.0278 E esdk error -22
DBUG: 1588670351.0278 E esdk error -22
DBUG: 1588670355.0925 I esdk Requesting Bytes: 1578k => 2013k +435k (used: 1264k, buf: 1699k, thres: 1571k, rate: 96k)
DBUG: 1588670356.0179 E esdk Failed to send request (error -15)
DBUG: 1588670356.0209 I esdk Notifying kSpPlaybackNotifyMetadataChanged

DBUG: 1588670430.0776 W audio Bytes were discarded: 7744 at byte_offset: 1304456
DBUG: 1588670430.0816 E download Header read error: n=-1
DBUG: 1588670430.0828 I esdk Result : family AF_INET addrlen 16, addr 180.149.59.210
DBUG: 1588670430.0828 I esdk Result : family AF_INET addrlen 16, addr 180.149.59.208
DBUG: 1588670430.0828 I esdk Creating IPv4 socket (domain 2)
DBUG: 1588670430.0828 I esdk connect(2 180.149.59.210:80)
DBUG: 1588670430.0828 E esdk ret = 0
DBUG: 1588670430.0946 E download Header read error: n=-1
DBUG: 1588670440.0970 I esdk Result : family AF_INET addrlen 16, addr 180.149.59.210
DBUG: 1588670440.0970 I esdk Result : family AF_INET addrlen 16, addr 180.149.59.208
DBUG: 1588670440.0970 I esdk Creating IPv4 socket (domain 2)
DBUG: 1588670440.0970 I esdk connect(2 180.149.59.210:80)


Can you help me with the DBUG error code list, If not then please tell me about these error values : -22 and -1.
Complete logs are attached.

Thanks