iOS 使用 quick 的 httpRequest 下载图片出现不可达。

[Maxize]

使用 HTTPRequest 在 iOS，Mac， Windows 版本下会出现不可达，（需挂梯子）。 测试地址是：

    -- 原始地址
    local picUrl = "http://graph.facebook.com/694528257411491/picture?width=200&height=200&t=20180421"
    -- 重定向后的地址
    local picUrl = "https://lookaside.facebook.com/platform/profilepic/?asid=694528257411491&height=200&width=200&ext=1524558242&hash=AeSflWB8JKNSiLAF"

这个地址比较特殊，请求之后会重定向到下面那个地址。

浏览器直接打开这个地址是可以下载得到对应的图片的。

httpRequest 的 test code

function M:onResponse(event, index, dumpResponse)
    local request = event.request
    printf("REQUEST %d - event.name = %s", index, event.name)
    if event.name == "completed" then
        printf("REQUEST %d - getResponseStatusCode() = %d", index, request:getResponseStatusCode())
        if request:getResponseStatusCode() ~= 200 then
        else
            printf("REQUEST %d - getResponseDataLength() = %d", index, request:getResponseDataLength())
            print("dump:" .. tostring(dumpResponse))
            if dumpResponse then
                printf("REQUEST %d - getResponseString() =\n%s", index, request:getResponseString())
            end
        end
    elseif event.name ~= "progress" then
        -- printf("REQUEST %d - getErrorCode() = %d, getErrorMessage() = %s", index, request:getErrorCode(), request:getErrorMessage())
        print("ErrorCode:" .. tostring(request:getErrorCode()))
        print("ErrowMsg:" .. tostring(request:getErrorMessage()))
    end

    print("----------------------------------------")
end

function M:createHTTPRequestTest()
    local url = "http://graph.facebook.com/694528257411491/picture?width=200&height=200&t=20180421"
    if (not self.requestCount) then
        self.requestCount = 0
    end
    self.requestCount = self.requestCount + 1
    local index = self.requestCount
    local request = network.createHTTPRequest(function(event)
        if tolua.isnull(self) then
            printf("REQUEST %d COMPLETED, BUT SCENE HAS QUIT", index)
            return
        end
        self:onResponse(event, index)
    end, url, "GET")
    printf("REQUEST START %d", index)
    request:start()
end

关于 HTTPRequest 底层是采用 curl 实现的，所以猜想是不是因为这个模块的一些请求设置有问题导致的。

在 V3.6.5 版本下本来还有一个 XMLHTTPRequest，就用这个写了个测试类，发现也是有问题的。而在 cocos2dx 3.16 版本上却是可以的。关于 httpClient 的代码：

    if (not self.m_testSprite) then
        self.m_testSprite = display.newSprite("input your custom pic fileName")
            :addTo(self)
            :pos(display.cx, display.cy)
    end
    self.m_testSprite:retain()
    local httpRequest = cc.XMLHttpRequest:new()
    httpRequest._urlFileName = "test_download.jpg"
    httpRequest._urlSprite = self.m_testSprite
    httpRequest.responseType = cc.XMLHTTPREQUEST_RESPONSE_STRING
    httpRequest:open("GET", "http://graph.facebook.com/694528257411491/picture?width=200&height=200&t=20180421")
    local function onDownloadImageCallback( ... )
        print(" onDownloadImageCallback -- readyState is: ", httpRequest.readyState, " status is ", httpRequest.status)
        if httpRequest.readyState == 4 and (httpRequest.status >= 200 and httpRequest.status < 207) then
            local fileData = httpRequest.response
            local fullFileName = device.writablePath .. "/" .. httpRequest._urlFileName
            local file = io.open(fullFileName, "wb")
            file:write(fileData)
            file:close()
            local texture2d = cc.Director:getInstance():getTextureCache():addImage(fullFileName)
            local pSprite = httpRequest._urlSprite
            if texture2d then
                pSprite:setTexture(texture2d)
            end
            pSprite:release()
        end
    end
    httpRequest:registerScriptHandler(onDownloadImageCallback)
    httpRequest:send()

有没有老司机测试看看。

[Maxize]

目前在路由器翻墙的情况下可以下载得到图片了，但是通过手机安装的 ss 的话还是无法下载。

[u0u0]

这个可能是代理连接的问题。需要看看