httpcOpenContext fails after exactly 8 times, consistently about libctru HOT 9 CLOSED

#include <stdlib.h>
#include <string.h>

#include <string>

using namespace std;

#include <3ds.h>

Result http_download(httpcContext *context)//This error handling needs updated with proper text printing once ctrulib itself supports that.
{
    Result ret=0;
    u8* framebuf_top, *framebuf_bottom;
    u32 statuscode=0;
    u32 size=0, contentsize=0;
    u8 *buf;

    framebuf_bottom = gfxGetFramebuffer(GFX_BOTTOM, GFX_LEFT, NULL, NULL);
    memset(framebuf_bottom, 0x40, 240*320*3);
    gfxFlushBuffers();
    gfxSwapBuffers();

    framebuf_bottom = gfxGetFramebuffer(GFX_BOTTOM, GFX_LEFT, NULL, NULL);
    memset(framebuf_bottom, 0x40, 240*320*3);
    gfxFlushBuffers();
    gfxSwapBuffers();
    gspWaitForVBlank();

    ret = httpcBeginRequest(context);
    if(ret!=0)return ret;

    ret = httpcGetResponseStatusCode(context, &statuscode, 0);
    if(ret!=0)return ret;

    if(statuscode!=200)return -2;

    ret=httpcGetDownloadSizeState(context, NULL, &contentsize);
    if(ret!=0)return ret;

    buf = (u8*)malloc(contentsize);
    if(buf==NULL)return -1;
    memset(buf, 0, contentsize);

    framebuf_bottom = gfxGetFramebuffer(GFX_BOTTOM, GFX_LEFT, NULL, NULL);
    memset(framebuf_bottom, 0xc0, 240*320*3);
    gfxFlushBuffers();
    gfxSwapBuffers();

    framebuf_bottom = gfxGetFramebuffer(GFX_BOTTOM, GFX_LEFT, NULL, NULL);
    memset(framebuf_bottom, 0xc0, 240*320*3);
    gfxFlushBuffers();
    gfxSwapBuffers();
    gspWaitForVBlank();

    framebuf_top = gfxGetFramebuffer(GFX_TOP, GFX_LEFT, NULL, NULL);
    framebuf_bottom = gfxGetFramebuffer(GFX_BOTTOM, GFX_LEFT, NULL, NULL);

    ret = httpcDownloadData(context, buf, contentsize, NULL);
    if(ret!=0)
    {
        free(buf);
        return ret;
    }

    size = contentsize;
    if(size>(240*400*3))size = 240*400*3;

    memset(framebuf_bottom, 0xff, 240*320*3);
    memcpy(framebuf_top, buf + 8, size - 8); //skip past the width/height markers

    gfxFlushBuffers();
    gfxSwapBuffers();

    framebuf_top = gfxGetFramebuffer(GFX_TOP, GFX_LEFT, NULL, NULL);
    framebuf_bottom = gfxGetFramebuffer(GFX_BOTTOM, GFX_LEFT, NULL, NULL);

    memset(framebuf_bottom, 0xff, 240*320*3);
    memcpy(framebuf_top, buf + 8, size - 8);

    gfxFlushBuffers();
    gfxSwapBuffers();
    gspWaitForVBlank();

    free(buf);

    return 0;
}

void display_image(u8* data, int size) {
    u8* framebuf_bottom = gfxGetFramebuffer(GFX_BOTTOM, GFX_LEFT, NULL, NULL);
    memcpy(framebuf_bottom, data + 8, size - 8); //skip past the width/height markers
}

void download_and_display_image(string url) {
    //debug_message("Attempting to download: " + url);
    Result ret=0;
    httpcContext context;
    ret = httpcOpenContext(&context, (char*)url.c_str(), 0);//Change this to your own URL.

    if(ret==0)
    {
        ret=http_download(&context);
        httpcCloseContext(&context);
    }
}

int main()
{
    // Initialize services
    srvInit();
    aptInit();
    hidInit(NULL);
    gfxInit();
    //gfxSet3D(true); // uncomment if using stereoscopic 3D
    httpcInit();

    string image_list[3] = {"http://darknovagames.com:1337/3ds/raw1.bin","http://darknovagames.com:1337/3ds/raw2.bin","http://darknovagames.com:1337/3ds/raw3.bin"};
    int current_image = 0;

    // Main loop
    while (aptMainLoop())
    {
        gspWaitForVBlank();
        hidScanInput();

        // Your code goes here

        u32 kDown = hidKeysDown();
        if (kDown & KEY_START) {
            break; // break in order to return to hbmenu
        }

        if (kDown & KEY_A) {
            //download an image!
            download_and_display_image(image_list[current_image]);
            current_image++;
            current_image = current_image % 3;
        }

        // Flush and swap framebuffers
        gfxFlushBuffers();
        gfxSwapBuffers();
    }

    // Exit services
    httpcExit();
    gfxExit();
    hidExit();
    aptExit();
    srvExit();
    return 0;
}

>> svcSendSyncRequest (0x32)
http_c_SyncRequest (line 217): CloseContext 0dadbb2a --stub--

>> svcCloseHandle (0x23)
svcCloseHandle: svcCloseHandle undefined for handle-type "service".