From b7f9da74d49257e16c2202d2463dfc1fd641a67e Mon Sep 17 00:00:00 2001
From: "Chris West (Faux)" <git@goeswhere.com>
Date: Sun, 15 Mar 2020 21:43:33 +0000
Subject: [PATCH] I CANNOT READ

---
 .gitignore |  2 ++
 Dockerfile |  9 +++++++++
 app.c      | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 quebec.yml | 41 +++++++++++++++++++++++++++++++++++++++
 4 files changed, 109 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Dockerfile
 create mode 100644 app.c
 create mode 100644 quebec.yml

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..eb3b49c
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+*.swp
+.idea/
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..2f15d6f
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,9 @@
+FROM alpine
+WORKDIR /b
+RUN apk add --update gcc libc-dev
+ADD app.c ./
+RUN gcc -O1 -static app.c
+
+FROM scratch
+COPY --from=0 /b/a.out /a
+CMD ["/a"]
diff --git a/app.c b/app.c
new file mode 100644
index 0000000..5476027
--- /dev/null
+++ b/app.c
@@ -0,0 +1,57 @@
+#define _POSIX_C_SOURCE 200112L
+
+#include <stdio.h>
+#include <netinet/in.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+int main() {
+
+    const char *head = "HTTP/1.0 200\r\nContent-type: text/plain\r\n\r\n";
+    char buf[256] = {};
+    memcpy(buf, head, strlen(head));
+    if (0 != gethostname(buf + strlen(buf), sizeof(buf))) {
+        return 4;
+    }
+
+    strcat(buf, "\n");
+
+    int sockfd = socket(AF_INET, SOCK_STREAM, 0);
+
+#ifdef REUSEADDR
+    int enable = 1;
+    if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(int)) < 0) {
+        return 5;
+    }
+#endif
+
+    struct sockaddr_in servaddr = {};
+    servaddr.sin_family = AF_INET;
+    servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
+    servaddr.sin_port = htons(1337);
+    if (0 != bind(sockfd, (struct sockaddr*)&servaddr, sizeof(servaddr))) {
+        return 1;
+    }
+
+    if (0 != listen(sockfd, 50)) {
+        return 2;
+    }
+
+    for (;;) {
+        int conn = accept(sockfd, NULL, NULL);
+        if (conn < 0) {
+            return 3;
+        }
+
+        // errors intentionally ignored
+        write(conn, buf, strlen(buf));
+
+        // without shutdown, curl sometimes gets the close before the data
+        shutdown(conn, SHUT_RDWR);
+        close(conn);
+    }
+}
+
diff --git a/quebec.yml b/quebec.yml
new file mode 100644
index 0000000..ec814ae
--- /dev/null
+++ b/quebec.yml
@@ -0,0 +1,41 @@
+---
+kind: Deployment
+apiVersion: apps/v1
+metadata:
+  name: hosty
+spec:
+  strategy:
+    rollingUpdate:
+      maxSurge: 1
+      maxUnavailable: 1
+    type: RollingUpdate
+  replicas: 3
+  selector:
+    matchLabels:
+      name: hosty
+  template:
+    metadata:
+      labels:
+        name: hosty
+    spec:
+      containers:
+        - name: app
+          image: faux/hostname-reply
+          ports:
+            - containerPort: 1337
+          readinessProbe:
+            httpGet:
+              path: /
+              port: 1337
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: hosty
+spec:
+  type: ClusterIP
+  ports:
+    - port: 80
+      targetPort: 1337
+  selector:
+    name: hosty