conflict with gin cache

[julaee]

I have a problem when using gin cache.
The first request serves correctly, but second request that was cached in gin cache middleware returns response with length 0

[easonlin404]

@acegishniz can you post your example code?

[julaee]

@easonlin404
@appleboy
i did fixed it.
i did comment this line in gzip.go file:
//c.Header("Content-Length", "0")
and in cache middleware ( https://github.com/gin-contrib/cache ) in file cache.go
in this function:

func CachePage(store persistence.CacheStore, expire time.Duration, handle gin.HandlerFunc) gin.HandlerFunc {

	return func(c *gin.Context) {
		var cache responseCache
		url := c.Request.URL
		key := urlEscape(PageCachePrefix, url.RequestURI())
		log.Println(key)
		if err := store.Get(key, &cache); err != nil {
			log.Println(err.Error())
			// replace writer
			writer := newCachedWriter(store, expire, c.Writer, key)
			c.Writer = writer
			handle(c)
		} else {
			log.Println(cache.status)
			c.Writer.WriteHeader(cache.status)
			for k, vals := range cache.header {
				for _, v := range vals {
					c.Writer.Header().Add(k, v)
				}
			}
			c.Writer.Write(cache.data)
		}
	}
}

change this slice code:

			for k, vals := range cache.header {
				for _, v := range vals {
					c.Writer.Header().Add(k, v)
				}
			}

to this:

			for k, vals := range cache.header {
				for _, v := range vals {
					if (k=="Content-Encoding" && v=="gzip") {
						continue
					}
					c.Writer.Header().Add(k, v)
				}
			}