Additional Features

SoupSessionFeature — Interface for miscellaneous session features
SoupContentDecoder — Content-Encoding handler
SoupContentSniffer — Content sniffing for SoupSession
SoupLogger — Debug logging support
Authentication
SoupAuthManager — HTTP client-side authentication handler
SoupAuth — HTTP client-side authentication support
SoupAuthDomain — Server-side authentication
SoupAuthDomainBasic — Server-side "Basic" authentication
SoupAuthDomainDigest — Server-side "Digest" authentication
Caching
SoupCache — Caching support
Cookie Storage Support
SoupCookieJar — Automatic cookie handling for SoupSession
SoupCookieJarText — Text-file-based ("cookies.txt") Cookie Jar
SoupCookieJarDB — Database-based Cookie Jar
HSTS Support
SoupHSTSEnforcer — Automatic HTTP Strict Transport Security enforcing for SoupSession
SoupHSTSEnforcerDB — Persistent HTTP Strict Transport Security enforcer
SoupHSTSPolicy — HSTS policies
Metrics
SoupMessageMetrics — Message metrics

Authentication