Change PING to ECHO to be compatible with old versions of Redis.

yatsukhnenko · yatsukhnenko · commit a5f95925ccd7 · 2019-12-07T21:49:35.000+02:00
diff --git a/library.c b/library.c
@@ -1812,7 +1812,7 @@ redis_sock_check_liveness(RedisSock *redis_sock)
     }
     gettimeofday(&tv, NULL);
     uniqid_len = snprintf(uniqid, sizeof(uniqid), "phpredis_pool:%08lx%05lx:%08" PRIx32, (long)tv.tv_sec, (long)tv.tv_usec, php_mt_rand());
-    redis_cmd_init_sstr(&cmd, 1, "PING", sizeof("PING") - 1);
+    redis_cmd_init_sstr(&cmd, 1, "ECHO", sizeof("ECHO") - 1);
     redis_cmd_append_sstr(&cmd, uniqid, uniqid_len);
     smart_string_0(&cmd);
 

Original file line number	Diff line number	Diff line change
`@@ -1812,7 +1812,7 @@ redis_sock_check_liveness(RedisSock *redis_sock)`
`1812`	`1812`	`}`
`1813`	`1813`	`gettimeofday(&tv, NULL);`
`1814`	`1814`	`uniqid_len = snprintf(uniqid, sizeof(uniqid), "phpredis_pool:%08lx%05lx:%08" PRIx32, (long)tv.tv_sec, (long)tv.tv_usec, php_mt_rand());`
`1815`		`- redis_cmd_init_sstr(&cmd, 1, "PING", sizeof("PING") - 1);`
	`1815`	`+ redis_cmd_init_sstr(&cmd, 1, "ECHO", sizeof("ECHO") - 1);`
`1816`	`1816`	`redis_cmd_append_sstr(&cmd, uniqid, uniqid_len);`
`1817`	`1817`	`smart_string_0(&cmd);`
`1818`	`1818`