From 6ff753745f1b0bed2b3425bfff4591d3d245d54f Mon Sep 17 00:00:00 2001
From: shove <shove@163.com>
Date: Wed, 24 Aug 2022 01:50:41 +0800
Subject: [PATCH] smtp: send mail to multiple recipients. #15508 (#15509)

---
 vlib/net/smtp/smtp.v      | 12 +++++++-----
 vlib/net/smtp/smtp_test.v |  8 ++++++++
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/vlib/net/smtp/smtp.v b/vlib/net/smtp/smtp.v
index 2a114ca831..cd0974885e 100644
--- a/vlib/net/smtp/smtp.v
+++ b/vlib/net/smtp/smtp.v
@@ -216,8 +216,10 @@ fn (mut c Client) send_mailfrom(from string) ? {
 }
 
 fn (mut c Client) send_mailto(to string) ? {
-	c.send_str('RCPT TO: <$to>\r\n')?
-	c.expect_reply(.action_ok)?
+	for rcpt in to.split(';') {
+		c.send_str('RCPT TO: <$rcpt>\r\n')?
+		c.expect_reply(.action_ok)?
+	}
 }
 
 fn (mut c Client) send_data() ? {
@@ -231,9 +233,9 @@ fn (mut c Client) send_body(cfg Mail) ? {
 	nonascii_subject := cfg.subject.bytes().any(it < u8(` `) || it > u8(`~`))
 	mut sb := strings.new_builder(200)
 	sb.write_string('From: $cfg.from\r\n')
-	sb.write_string('To: <$cfg.to>\r\n')
-	sb.write_string('Cc: <$cfg.cc>\r\n')
-	sb.write_string('Bcc: <$cfg.bcc>\r\n')
+	sb.write_string('To: <${cfg.to.split(';').join('>; <')}>\r\n')
+	sb.write_string('Cc: <${cfg.cc.split(';').join('>; <')}>\r\n')
+	sb.write_string('Bcc: <${cfg.bcc.split(';').join('>; <')}>\r\n')
 	sb.write_string('Date: $date\r\n')
 	if nonascii_subject {
 		// handle UTF-8 subjects according RFC 1342
diff --git a/vlib/net/smtp/smtp_test.v b/vlib/net/smtp/smtp_test.v
index 9c4732654a..3002e32e76 100644
--- a/vlib/net/smtp/smtp_test.v
+++ b/vlib/net/smtp/smtp_test.v
@@ -123,3 +123,11 @@ fn test_smtp_implicit_ssl() {
 
 	assert client.is_open && client.encrypted
 }
+
+fn test_smtp_multiple_recipients() ? {
+	$if !network ? {
+		return
+	}
+
+	assert true
+}