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1 + ```
2 + # Hoppscotch Fix - Step-by-Step Guide
3 +
4 + ## 📋 **Step-by-Step Fix Hoppscotch (Dari Error 502 → Sukses)**
5 +
6 + Berikut rangkuman lengkap langkah-langkah yang kita lakukan untuk memperbaiki Hoppscotch.
7 +
8 + ---
9 +
10 + ### 🔍 **STEP 1: Identifikasi Masalah Awal**
11 +
12 + **Gejala:**
13 + - Co-worker tidak bisa load workspace list di Hoppscotch (loading terus)
14 + - Error di log: `502 Bad Gateway`
15 +
16 + **Diagnosa:**
17 + ```bash
18 + # Cek log container hoppscotch
19 + docker logs --tail=100 48fc01c8f9a2 2>&1 | grep -i error
20 + ```
21 +
22 + **Hasil:**
23 + ```
24 + dial tcp [::1]:8080: connect: connection refused
25 + ```
26 + → Caddy (reverse proxy) tidak bisa konek ke backend service.
27 +
28 + ---
29 +
30 + ### 🔍 **STEP 2: Cek Status Container & Port**
31 +
32 + ```bash
33 + # Cek container yang running
34 + docker ps --filter "publish=8080"
35 + docker ps -a | grep hoppscotch
36 + ```
37 +
38 + **Hasil:** Container hoppscotch sudah running tapi backend-nya mati.
39 +
40 + **Cek apakah ada yang listen di port 9502:**
41 + ```bash
42 + sudo netstat -tulpn | grep 9502
43 + ```
44 +
45 + **Hasil:** `0.0.0.0:9502` → ada port mapping, tapi service di dalamnya mati.
46 +
47 + ---
48 +
49 + ### 🔍 **STEP 3: Cek Log Lengkap Container**
50 +
51 + ```bash
52 + docker logs -f af2efe1a9953
53 + ```
54 +
55 + **Dari log terlihat:**
56 + - ✅ Backend server mulai jalan: `Backend Server | Port: 8080`
57 + - ✅ Semua route terdaftar: `/graphql`, `/ping`, `/auth`, dll.
58 + - ✅ Ada request sukses: `POST /graphql 200`
59 + - ❌ Tapi Caddy masih error: `dial tcp [::1]:8080: connection refused`
60 +
61 + **Kesimpulan:** Backend jalan di `127.0.0.1:8080`, tapi Caddy coba pake `localhost:8080` (IPv6 `::1`).
62 +
63 + ---
64 +
65 + ### 🔍 **STEP 4: Cek Konfigurasi Caddy**
66 +
67 + ```bash
68 + # Masuk ke container
69 + docker exec -it af2efe1a9953 sh
70 +
71 + # Lihat konfigurasi Caddy
72 + cat /etc/caddy/aio-subpath-access.Caddyfile
73 + ```
74 +
75 + **Isi Caddyfile:**
76 + ```
77 + handle_path /backend* {
78 + reverse_proxy localhost:8080 # <-- MASALAH: pake localhost (IPv6)
79 + }
80 + ```
81 +
82 + ---
83 +
84 + ### 🔧 **STEP 5: Perbaiki Konfigurasi Caddy**
85 +
86 + **Ganti `localhost` menjadi `127.0.0.1` (IPv4):**
87 +
88 + ```bash
89 + docker exec af2efe1a9953 sed -i 's/localhost:8080/127.0.0.1:8080/g' /etc/caddy/aio-subpath-access.Caddyfile
90 + ```
91 +
92 + **Verifikasi:**
93 + ```bash
94 + docker exec af2efe1a9953 cat /etc/caddy/aio-subpath-access.Caddyfile | grep reverse_proxy
95 + ```
96 + **Hasil:**
97 + ```
98 + reverse_proxy 127.0.0.1:8080
99 + ```
100 +
101 + ---
102 +
103 + ### 🔧 **STEP 6: Restart Container**
104 +
105 + ```bash
106 + docker restart af2efe1a9953
107 +
108 + # Tunggu beberapa detik
109 + sleep 10
110 + ```
111 +
112 + ---
113 +
114 + ### 🔧 **STEP 7: Update Konfigurasi Nginx Host**
115 +
116 + **Edit Nginx:**
117 + ```bash
118 + sudo nano /etc/nginx/sites-available/hoppscotch
119 + ```
120 +
121 + **Tambahkan location /backend/:**
122 + ```nginx
123 + location /backend/ {
124 + proxy_pass http://127.0.0.1:9500/backend/; # Lewat Caddy di container
125 + proxy_set_header Host $host;
126 + proxy_set_header X-Real-IP $remote_addr;
127 + proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
128 + proxy_set_header X-Forwarded-Proto $scheme;
129 +
130 + # WebSocket support (penting untuk Hoppscotch)
131 + proxy_http_version 1.1;
132 + proxy_set_header Upgrade $http_upgrade;
133 + proxy_set_header Connection "upgrade";
134 + }
135 + ```
136 +
137 + **Test & Reload:**
138 + ```bash
139 + sudo nginx -t
140 + sudo systemctl reload nginx
141 + ```
142 +
143 + ---
144 +
145 + ### ✅ **STEP 8: Test Endpoint**
146 +
147 + **Test dari host (seharusnya 400 - CSRF error, bukan 502):**
148 + ```bash
149 + curl -v https://hoppscotch.konstruksi.ai/backend/graphql
150 + ```
151 +
152 + **Hasil:**
153 + ```
154 + < HTTP/2 400
155 + < content-type: application/json
156 + {"errors":[{"message":"This operation has been blocked as a potential Cross-Site Request Forgery (CSRF)..."}]}
157 + ```
158 + ✅ **SUKSES!** Response 400 = backend sudah jalan.
159 +
160 + ---
161 +
162 + ### ✅ **STEP 9: Test dengan Request Valid**
163 +
164 + ```bash
165 + curl -X POST https://hoppscotch.konstruksi.ai/backend/graphql \
166 + -H "Content-Type: application/json" \
167 + -d '{"query":"{ __typename }"}'
168 + ```
169 +
170 + **Hasil:**
171 + ```json
172 + {"data":{"__typename":"Query"}}
173 + ```
174 + ✅ **Backend benar-benar berfungsi!**
175 +
176 + ---
177 +
178 + ### 🎯 **STEP 10: Verifikasi Hoppscotch di Browser**
179 +
180 + 1. Buka `https://hoppscotch.konstruksi.ai`
181 + 2. Login dengan GitHub
182 + 3. Cek workspace list → **sudah bisa load!**
183 +
184 + ---
185 +
186 + ## 📝 **Ringkasan Root Cause & Fix**
187 +
188 + | Masalah | Penyebab | Solusi |
189 + |---------|----------|--------|
190 + | 502 Bad Gateway | Caddy pake IPv6 (`[::1]:8080`), backend listen di IPv4 (`127.0.0.1:8080`) | Ubah Caddyfile: `localhost:8080` → `127.0.0.1:8080` |
191 + | Nginx 502 | Nginx gak ada konfigurasi `/backend/*` | Tambahkan location /backend/ di Nginx |
192 + | Port mapping | Backend listen di 8080, bukan 3170 | Biarkan mapping `9502:3170` (tidak dipakai) |
193 +
194 + ---
195 +
196 + ## 🚀 **Command Penting yang Digunakan**
197 +
198 + ```bash
199 + # Lihat log error
200 + docker logs --tail=100 <container> 2>&1 | grep -i error
201 +
202 + # Follow log live
203 + docker logs -f <container>
204 +
205 + # Masuk ke container
206 + docker exec -it <container> sh
207 +
208 + # Edit file di container
209 + docker exec <container> sed -i 's/old/new/g' /path/to/file
210 +
211 + # Restart container
212 + docker restart <container>
213 +
214 + # Edit Nginx
215 + sudo nano /etc/nginx/sites-available/hoppscotch
216 +
217 + # Reload Nginx
218 + sudo nginx -t && sudo systemctl reload nginx
219 + ```
220 +
221 + ---
222 +
223 + ## 📌 **Tips Debugging Kedepan**
224 +
225 + 1. **Cek log dulu:** `docker logs --tail=50 <container>`
226 + 2. **Cek dari dalam container:** `docker exec <container> curl http://127.0.0.1:8080/graphql`
227 + 3. **Cek Nginx:** `sudo nginx -t`
228 + 4. **Test endpoint langsung:** `curl -v https://domain.com/path`
229 +
230 + ---
231 +
232 + ## 📊 **Arsitektur Akhir**
233 +
234 + ```
235 + Browser
236 + ↓
237 + https://hoppscotch.konstruksi.ai
238 + ↓
239 + Nginx (Host)
240 + ├── / → http://127.0.0.1:9500 (Caddy → Frontend)
241 + └── /backend/* → http://127.0.0.1:9500/backend/* (Caddy → Backend)
242 + ↓
243 + Container: hoppscotch (af2efe1a9953)
244 + ├── Caddy (port 9500)
245 + │ └── /backend/* → reverse_proxy 127.0.0.1:8080
246 + └── Backend Server (port 8080)
247 + └── /graphql, /ping, /auth, dll.
248 + ```
249 +
250 + ---
251 +
252 + ## ✅ **Status Akhir**
253 +
254 + - ✅ Frontend Hoppscotch jalan di `https://hoppscotch.konstruksi.ai`
255 + - ✅ Backend GraphQL jalan di `https://hoppscotch.konstruksi.ai/backend/graphql`
256 + - ✅ WebSocket support untuk realtime
257 + - ✅ Co-worker bisa login dan load workspace list
258 + ```
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