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by **TimStone** » Thu Jul 28, 2022 10:43 pm

I have been using tsmtp() class, with some modifications for CDO, etc., within a windows application with no problem for several years.

I have recently built a Service and all is working great. However, it stops running when trying to send emails. The lockup is happening when the SMTP class is linked in. I tried adding a modified version with any windows referencing calls removed, but no luck.

I have reviewed posts on the forum that suggest Harbour, with CURL, can be used to handle emails. However, I can't find an actual complete example.

I do use curl for websites, and have no problem with JSON, etc. traffic. However, that is not EMAIL, being sent through a remote email server.

Can anyone give me links to a clear example of using CURL to SEND email to an SMTP server ?

Thanks.

by **Jimmy** » Thu Jul 28, 2022 11:04 pm

hi Tim,

i had ask same Question for FiveWin.

i have found this Code and have successful add "my Provider" ( Germany T-ONLINE )

but i fail at my 2nd Provider WEB.DE ...

have something to do with STARTTLS ...

hope you can use this Code Sample

Code: Select all Expand view: /* Copyright 2014-2017 Viktor Szakats */ #require "hbcurl" #require "hbtip" #include "simpleio.ch" #include "hbcurl.ch" #define HB_CURLVERINFO_VERSION 1 #define HB_CURLVERINFO_VERSION_NUM 2 #define HB_CURLVERINFO_PROTOCOLS 8 /* Array */ #define HB_CURLSSLBACKEND_SCHANNEL 8 #define HB_CURLSSLSET_OK 0 #define HB_CURLOPT_MIMEPOST 250 PROCEDURE Main( cFrom, cPassword, cTo, cHost ) LOCAL lSystemCA, cCA := hb_PathJoin( iif( hb_DirBase() == "", hb_cwd(), hb_DirBase() ), "cacert.pem" ) #if defined( __PLATFORM__WINDOWS ) LOCAL tmp #endif LOCAL curl LOCAL lAPI_curl := curl_version_info()[ HB_CURLVERINFO_VERSION_NUM ] >= 0x073800 LOCAL cUser LOCAL cText LOCAL cHTML LOCAL cSubject /* Require STARTTLS on port 587 (true) or allow it to proceed without it (false) */ LOCAL lSTARTTLS_force IF hb_AScan( curl_version_info()[ HB_CURLVERINFO_PROTOCOLS ], "smtps",,, .T. ) == 0 ? "Error: Requires libcurl 7.20.0 or newer, built with TLS/SSL and SMTP protocol support" RETURN ENDIF hb_default( @cFrom , "from@example.net" ) hb_default( @cPassword, "password" ) hb_default( @cTo , "to@example.org" ) hb_default( @cHost , "localhost" ) cFrom := "<" + ( cUser := hb_curl_mail_address_to_email( cFrom ) ) + ">" cTo := "<" + hb_curl_mail_address_to_email( cTo ) + ">" cHost := Lower( cHost ) cSubject := "Example sending a MIME-formatted message" cText := ; e"This is the inline text message of the email.\r\n" + ; e"\r\n" + ; e" It could be a lot of lines that would be displayed in an email\r\n" + ; e"viewer that is not able to handle HTML.\r\n" cHTML := ; e"<html><body>\r\n" + ; e"This is the inline HTML message of the email." + ; e" \r\n" + ; e"It could be a lot of HTML data that would be displayed by " + ; e"email viewers able to handle HTML." + ; e"</body></html>\r\n" lSTARTTLS_force := .F. /* NOTE: Consult your provider for updated settings and create a Pull Request if necessary. */ DO CASE CASE cHost == "apple" .OR. "@icloud.com" $ cFrom .OR. "@mac.com" $ cFrom .OR. "@me.com" $ cFrom cHost := "smtp://smtp.mail.me.com:587"; lSTARTTLS_force := .T. CASE cHost == "fastmail" .OR. "@fastmail.com" $ cFrom .OR. "@fastmail.fm" $ cFrom cHost := "smtps://smtp.fastmail.com" CASE cHost == "gmx.net" .OR. "@gmx.net" $ cFrom .OR. "@gmx.ch" $ cFrom .OR. "@gmx.de" $ cFrom cHost := "smtps://mail.gmx.net" CASE cHost == "google" .OR. "@gmail.com" $ cFrom .OR. "@googlemail.com" $ cFrom cHost := "smtps://smtp.gmail.com" CASE cHost == "mail.ru" .OR. "@mail.ru" $ cFrom cHost := "smtps://smtp.mail.ru" CASE cHost == "netease" .OR. "@163.com" $ cFrom cHost := "smtps://smtp.163.com" CASE cHost == "office365" cHost := "smtp://smtp.office365.com:587"; lSTARTTLS_force := .T. CASE cHost == "outlook" .OR. "@outlook.com" $ cFrom .OR. "@hotmail.com" $ cFrom cHost := "smtp://smtp-mail.outlook.com:587"; lSTARTTLS_force := .T. CASE cHost == "sina" .OR. "@sina.com" $ cFrom cHost := "smtps://smtp.vip.sina.com" CASE cHost == "uol" .OR. "@uol.com.br" $ cFrom cHost := "smtps://smtps.uol.com.br" CASE cHost == "yahoo" .OR. "@yahoo.com" $ cFrom cHost := "smtps://smtp.mail.yahoo.com" CASE cHost == "mailtrap.io" .OR. "@mailtrap.io" $ cFrom cHost := "smtp://smtp.mailtrap.io:465"; lSTARTTLS_force := .T. cUser := StrTran( cUser, "@mailtrap.io" ) CASE cHost == "localhost" cHost := "smtp://localhost:1025" /* MailHog */ cUser := cPassword := NIL // add German T-ONLINE CASE cHost == "securesmtp.t-online.de" cHost := "smtp://securesmtp.t-online.de:465"; lSTARTTLS_force := .T. ENDCASE ? "libcurl:", curl_version_info()[ HB_CURLVERINFO_VERSION ] ? "Payload API:", iif( lAPI_curl, "libcurl native", "tip_MailAssemble()" ) ? "Host:", cHost, iif( lSTARTTLS_force, "(must STARTTLS)", "" ) #if defined( __PLATFORM__UNIX ) lSystemCA := .T. #elif defined( __PLATFORM__WINDOWS ) /* Switch to SChannel SSL backend, if available (on Windows). Doing this to use the OS certificate store. */ curl_global_sslset( -1,, @tmp ) IF ( lSystemCA := ; HB_CURLSSLBACKEND_SCHANNEL $ tmp .AND. ; curl_global_sslset( HB_CURLSSLBACKEND_SCHANNEL ) == HB_CURLSSLSET_OK ) cCA := NIL ELSE cCA := hb_DirBase() + hb_DirSepToOS( "../../../bin/" ) + cCA ENDIF #else lSystemCA := .F. #endif curl_global_init() IF Empty( curl := curl_easy_init() ) ? "Failed to init" ELSE IF ! lSystemCA IF hb_vfExists( cCA ) curl_easy_setopt( curl, HB_CURLOPT_CAINFO, cCA ) ELSE ? ? "Error: Trusted Root Certificates missing. Open this URL in your web browser:" ? " " + "https://curl.se/ca/cacert.pem" ? "and save the file as:" ? " " + cCA RETURN ENDIF ENDIF curl_easy_setopt( curl, HB_CURLOPT_USE_SSL, ; iif( lSTARTTLS_force, HB_CURLUSESSL_ALL, HB_CURLUSESSL_TRY ) ) curl_easy_setopt( curl, HB_CURLOPT_UPLOAD ) curl_easy_setopt( curl, HB_CURLOPT_URL, cHost ) curl_easy_setopt( curl, HB_CURLOPT_PROTOCOLS, ; hb_bitOr( HB_CURLPROTO_SMTPS, HB_CURLPROTO_SMTP ) ) curl_easy_setopt( curl, HB_CURLOPT_TIMEOUT_MS, 15000 ) curl_easy_setopt( curl, HB_CURLOPT_VERBOSE, .T. ) curl_easy_setopt( curl, HB_CURLOPT_USERNAME, cUser ) curl_easy_setopt( curl, HB_CURLOPT_PASSWORD, cPassword ) curl_easy_setopt( curl, HB_CURLOPT_MAIL_FROM, cFrom ) curl_easy_setopt( curl, HB_CURLOPT_MAIL_RCPT, { cTo } ) IF lAPI_curl curl_easy_setopt( curl, HB_CURLOPT_HTTPHEADER, { ; "Date: " + hb_curl_date(), ; "To: " + cTo, ; "From: hbcurl " + cFrom, ; "Cc: " + cTo, ; "Message-ID: <dcd7cb36-11db-487a-9f3a-e652a9458efd@rfcpedant.example.org>", ; "Reply-To: " + cFrom, ; "Disposition-Notification-To: " + cFrom, ; "X-Priority: " + hb_ntos( 3 ), ; /* 1: high, 3: standard, 5: low */ "Subject: " + cSubject } ) /* NOTE: 'charset' to be added when implemented */ curl_easy_setopt( curl, HB_CURLOPT_MIMEPOST, { ; { "subparts" => { ; { "data" => cHTML, ; "type" => "text/html" }, ; { "data" => cText } }, ; "type" => "multipart/alternative", ; "headers" => { "Content-Disposition: inline" } }, ; { "filedata" => __FILE__ }, ; { "data" => Replicate( hb_BChar( 123 ), 1024 ), ; "type" => "image/png", ; "encoder" => "base64", ; /* binary, 8bit, 7bit, base64, quoted-printable */ "filename" => "mock.png" } } ) ELSE cText := tip_MailAssemble( ; "hbtip " + cFrom, ; { cTo }, ; /* aCC */, ; cText, ; cSubject, ; { __FILE__, { "mock.png", Replicate( hb_BChar( 123 ), 1024 ) } } /* attachments */, ; /* nPriority */, ; /* lRead */, ; /* cReplyTo */, ; /* cCharset */, ; /* cEncoding */, ; .F. /* lBodyHTML */, ; /* bSMIME */ ) curl_easy_setopt( curl, HB_CURLOPT_UL_BUFF_SETUP, cText ) curl_easy_setopt( curl, HB_CURLOPT_INFILESIZE_LARGE, hb_BLen( cText ) ) ENDIF ? "Result:", curl_easy_perform( curl ) WAIT curl_easy_cleanup( curl ) ENDIF RETURN

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Sending Email with CURL ?

Sending Email with CURL ?

Re: Sending Email with CURL ?

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