Other AliasNs_ConnGets, Ns_ConnRead, Ns_ConnFlushHeaders, Ns_ConnReadLine
Ns_ConnGets(buf, bufsize, conn)
Ns_ConnRead(conn, vbuf, toread)
Ns_ConnReadHeaders(conn, set, nreadPtr)
Ns_ConnReadLine(conn, dsPtr, nreadPtr)
char *buf (in)
Pointer to string buffer of length bufsize.
int bufsize (in)
Length of buffer pointer to by buf.
Ns_Conn conn (in)
Pointer to open connection.
Ns_DString dsPtr (out)
Pointer to initialized dstring to receive copied line.
int *nreadPtr (out)
Pointer to integer to receive number of bytes copied.
Ns_Set set (in/out)
Pointer to initialized Ns_Set to copy headers.
int toread (in)
Number of bytes to copy to location starting at vbuf
void *vbuf (in)
Pointer to memory location to copy content.
These routines support copying content from the connection. They all operate by copying from the content buffer returned by a call to Ns_ConnContent, maintaining a private, shared offset into the content. This means that these routines are not actually reading directly from the network and thus will not block waiting for input. See the man page on Ns_ConnContent for details on how the content is pre-read by the server and how resources are managed for small and large content requests.
- char *Ns_ConnGets(buf, bufsize, conn)
Copies the next available line of text from the content to the given
buf string, up to the given bufsize less space for a
trailing null (\0). The result is a pointer to buf or NULL
if an underlying call to Ns_ConnRead fails.
- int Ns_ConnFlushContent(conn)
Performs a logical flush of the underlying content available to
these routines. It simply moves the private offset to the end of
the content. The result is NS_OK unless an underlying call to
Ns_ConnContent failed in which case NS_ERROR is returned.
- int Ns_ConnRead(conn, vbuf, toread)
Copies up to toread bytes from the content to the memory
location pointed to by vbuf. The result is the number of
bytes copied which will match toread unless less bytes are
available in the input or -1 if an underlying call to Ns_ConnContent
- int Ns_ConnReadHeaders(conn, set, nreadPtr)
Copies lines up to the first blank line or end of content up to the
maximum header read size specified with the communication driver
"maxheader" parameter (default: 32k). Each line is parsed into
"key: value" pairs into the given Ns_Set pointed to be the set
argument using the Ns_ParseHeader routine with the
Ns_HeaderCaseDisposition specified by the "headercase" server
option (default: Preserve). The result is NS_OK if all lines were
consumed or NS_ERROR on overflow beyond the max header limit or if
there was an error with the underlying call to Ns_ConnRead
(including an error of a single line beyond the max line limit as
described below). The integer pointed to by the nreadPtr
argument, if given, is updated with the total number of bytes
consumed. This routine can be useful when parsing multipart/form-data
content to collect headers for each part.
- int Ns_ConnReadLine(conn, dsPtr, nreadPtr)
Copies the next available line to the given dsPtr dstring.
The integer pointed to by nreadPtr, if present, is updated
with the number of bytes copied. The line will not include the
trailing \r\n or \n if present. The function will return NS_OK
unless an underlying call to Ns_ConnContent failed or the
line exceeds the maximum line read size specified by the communication
driver "maxline" parameter (default: 4k). This routine differs
from Ns_ConnGets in that it copies the result to a dstring
instead of a character buffer, requires a full or end-of-content
terminated line, and enforces the maxline limit.
KEYWORDSconnection, read, content