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Xbase++

Receive Text up to a Match into a StringBuilder

See more Socket/SSL/TLS Examples

Demonstrates Socket.ReceiveUntilMatchSb, which receives bytes until an exact byte sequence is found and appends the received text to a StringBuilder.

Background. The match string is encoded using StringCharset and compared byte-for-byte. The match may span multiple underlying network reads.

Chilkat Xbase++ Downloads

Xbase++
LOCAL nSuccess
LOCAL oSocket
LOCAL nBTls
LOCAL nMaxWaitMs
LOCAL cCommand
LOCAL oSb
LOCAL cResponse

nSuccess := 0

oSocket := CreateObject("Chilkat.Socket")

//  Connect to the server using TLS.  The 3rd argument enables the TLS handshake after the TCP
//  connection succeeds; the 4th is the maximum time to wait, in milliseconds.
nBTls := 1
nMaxWaitMs := 5000
nSuccess := oSocket:Connect("example.com", 5000, nBTls, nMaxWaitMs)
IF (nSuccess == 0)
    ? oSocket:LastErrorText
    oSocket:destroy()
    RETURN
ENDIF

//  StringCharset controls the character encoding used when sending and receiving text.
oSocket:StringCharset := "utf-8"
//  Send a request using a simple application-defined text protocol in which each message ends with a
//  CRLF.
cCommand := "STATUS" + Chr(13) + Chr(10)
nSuccess := oSocket:SendString(cCommand)
IF (nSuccess == 0)
    ? oSocket:LastErrorText
    oSocket:destroy()
    RETURN
ENDIF

//  Receive bytes until an exact byte sequence is found, appending the received text to a
//  StringBuilder.  The match may span multiple underlying network reads.
oSb := CreateObject("Chilkat.StringBuilder")
nSuccess := oSocket:ReceiveUntilMatchSb("<EOM>", oSb)
IF (nSuccess == 0)
    ? oSocket:LastErrorText
    oSocket:destroy()
    oSb:destroy()
    RETURN
ENDIF

cResponse := oSb:GetAsString()
IF (oSb:LastMethodSuccess == 0)
    ? oSb:LastErrorText
    oSocket:destroy()
    oSb:destroy()
    RETURN
ENDIF

? cResponse

oSocket:destroy()
oSb:destroy()