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Reworked the storage of the client socket between keepalive connections

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to fix some nasty problems with the socket lasting longer than the
memory pool it was allocated from.
PR:
Obtained from:
Reviewed by:


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@88730 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Graham Leggett
2001-04-05 18:25:04 +00:00
parent c22377f12a
commit afce43baa9
3 changed files with 56 additions and 56 deletions
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9
modules/proxy/mod_proxy.c
View File

@@ -414,9 +414,13 @@ static int proxy_handler(request_rec *r)
if (strcasecmp(scheme, "ftp") == 0)
return ap_proxy_ftp_handler(r, NULL, url);
#endif
else
else {
ap_log_error(APLOG_MARK, APLOG_DEBUG | APLOG_NOERRNO, 0, r->server,
"Neither CONNECT, HTTP or FTP for %s",
r->uri);
return HTTP_FORBIDDEN;
}
}
/* -------------------------------------------------------------- */
/* Setup configurable data */
@@ -431,7 +435,7 @@ static void * create_proxy_config(apr_pool_t *p, server_rec *s)
ps->noproxies = ap_make_array(p, 10, sizeof(struct noproxy_entry));
ps->dirconn = ap_make_array(p, 10, sizeof(struct dirconn_entry));
ps->allowed_connect_ports = ap_make_array(p, 10, sizeof(int));
/* pc->origin = ap_make_array(p, 10, sizeof(struct origin_entry));*/
ps->client_socket = NULL;
ps->domain = NULL;
ps->viaopt = via_off; /* initially backward compatible with 1.3.1 */
ps->viaopt_set = 0; /* 0 means default */
@@ -455,7 +459,6 @@ static void * merge_proxy_config(apr_pool_t *p, void *basev, void *overridesv)
ps->noproxies = ap_append_arrays(p, base->noproxies, overrides->noproxies);
ps->dirconn = ap_append_arrays(p, base->dirconn, overrides->dirconn);
ps->allowed_connect_ports = ap_append_arrays(p, base->allowed_connect_ports, overrides->allowed_connect_ports);
/* ps->origin = base->origin;*/
ps->domain = (overrides->domain == NULL) ? base->domain : overrides->domain;
ps->viaopt = (overrides->viaopt_set == 0) ? base->viaopt : overrides->viaopt;

11
modules/proxy/mod_proxy.h
View File

@@ -167,11 +167,6 @@ struct noproxy_entry {
struct apr_sockaddr_t *addr;
};
struct origin_entry {
conn_rec *origin;
struct origin_entry *next;
};
typedef struct {
apr_array_header_t *proxies;
apr_array_header_t *aliases;
@@ -179,8 +174,10 @@ typedef struct {
apr_array_header_t *noproxies;
apr_array_header_t *dirconn;
apr_array_header_t *allowed_connect_ports;
/* apr_array_header_t *origin_array;*/
conn_rec *origin;
long id;
const char *connectname;
apr_port_t connectport;
apr_socket_t *client_socket;
const char *domain; /* domain name to use in absence of a domain name in the request */
int req; /* true if proxy requests are enabled */
char req_set;

92
modules/proxy/proxy_http.c
View File

@@ -180,7 +180,7 @@ int ap_proxy_http_handler(request_rec *r, char *url,
const char *proxyname, int proxyport)
{
request_rec *rp;
apr_pool_t *p = r->connection->pool;
apr_pool_t *p = r->pool;
const char *connectname;
int connectport = 0;
apr_sockaddr_t *uri_addr;
@@ -271,38 +271,31 @@ int ap_proxy_http_handler(request_rec *r, char *url,
connectname, NULL));
}
/* if a KeepAlive socket is already open, check whether it must stay
/* if a keepalive socket is already open, check whether it must stay
* open, or whether it should be closed and a new socket created.
*/
if (conf->origin) {
struct apr_sockaddr_t *remote_addr;
apr_port_t port;
if ((remote_addr = conf->origin->remote_addr) &&
(APR_SUCCESS == apr_sockaddr_port_get(&port, remote_addr)) &&
(port == connectport) &&
(!apr_strnatcasecmp(conf->origin->remote_addr->hostname,connectname))) {
if (conf->client_socket) {
if ((conf->id == r->connection->id) &&
(conf->connectport == connectport) &&
(conf->connectname) &&
(!apr_strnatcasecmp(conf->connectname,connectname))) {
ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r->server,
"proxy: keepalive address match (keep original socket)");
}
else {
ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r->server,
"proxy: keepalive address mismatch (close old socket (%s/%s, %d/%d))", connectname, conf->origin->remote_addr->hostname, connectport, port);
apr_socket_close(conf->origin->client_socket);
conf->origin = NULL;
"proxy: keepalive address mismatch (close old socket (%s/%s, %d/%d))", connectname, conf->connectname, connectport, conf->connectport);
apr_socket_close(conf->client_socket);
conf->client_socket = NULL;
}
}
/* get a socket - either a keepalive one, or a new one */
new = 1;
if (conf->origin) {
if (conf->client_socket) {
/* use previous keepalive socket */
origin = conf->origin;
sock = origin->client_socket;
origin->aborted = 0;
origin->keepalive = 1;
origin->keepalives++;
origin->remain = 0;
sock = conf->client_socket;
new = 0;
/* XXX FIXME: If the socket has since closed, change new to 1 so
@@ -311,7 +304,9 @@ int ap_proxy_http_handler(request_rec *r, char *url,
if (new) {
/* create a new socket */
if ((apr_socket_create(&sock, APR_INET, SOCK_STREAM, p)) != APR_SUCCESS) {
/* allocate this out of the process pool - if this socket gets lost then the proxy
* hangs when the socket is closed...! */
if ((apr_socket_create(&sock, APR_INET, SOCK_STREAM, r->server->process->pconf)) != APR_SUCCESS) {
ap_log_error(APLOG_MARK, APLOG_ERR, 0, r->server,
"proxy: error creating socket");
return HTTP_INTERNAL_SERVER_ERROR;
@@ -325,6 +320,9 @@ int ap_proxy_http_handler(request_rec *r, char *url,
}
#endif
ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r->server,
"proxy: socket has been created");
/*
* At this point we have a list of one or more IP addresses of
* the machine to connect to. If configured, reorder this
@@ -352,22 +350,6 @@ int ap_proxy_http_handler(request_rec *r, char *url,
continue;
}
/* the socket is now open, create a new connection */
origin = ap_new_connection(p, r->server, sock, 0);
conf->origin = origin;
if (!origin) {
/* the peer reset the connection already; ap_new_connection()
* closed the socket */
ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r->server,
"proxy: an error occurred creating a new connection to %pI (%s)", connect_addr, connectname);
connect_addr = connect_addr->next;
continue;
}
/* we use keepalives unless later specified */
origin->keepalive = 1;
origin->keepalives = 1;
/* if we get here, all is well */
failed = 0;
break;
@@ -384,6 +366,30 @@ int ap_proxy_http_handler(request_rec *r, char *url,
}
}
ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r->server,
"proxy: socket is connected");
/* the socket is now open, create a new connection */
origin = ap_new_connection(p, r->server, sock, r->connection->id);
if (!origin) {
/* the peer reset the connection already; ap_new_connection()
* closed the socket */
ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r->server,
"proxy: an error occurred creating a new connection to %pI (%s)", connect_addr, connectname);
apr_socket_close(sock);
return HTTP_INTERNAL_SERVER_ERROR;
}
conf->id = r->connection->id;
/* allocate this out of the connection pool - the check on r->connection->id makes
* sure that this string does not live past the connection lifetime */
conf->connectname = apr_pstrdup(r->connection->pool, connectname);
conf->connectport = connectport;
conf->client_socket = sock;
ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, r->server,
"proxy: connection complete");
/*
* Step Three: Send the Request
@@ -392,11 +398,8 @@ int ap_proxy_http_handler(request_rec *r, char *url,
*/
/* set up the connection filters */
origin->input_filters = NULL;
ap_add_input_filter("HTTP_IN", NULL, NULL, origin);
ap_add_input_filter("CORE_IN", NULL, NULL, origin);
origin->output_filters = NULL;
ap_add_output_filter("CORE", NULL, NULL, origin);
@@ -577,16 +580,16 @@ int ap_proxy_http_handler(request_rec *r, char *url,
apr_bucket_read(e, (const char **)&response, &len, APR_BLOCK_READ);
}
if (len == -1) {
conf->origin = NULL;
apr_socket_close(sock);
conf->client_socket = NULL;
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"proxy: error reading from remote server %s (length %d) using ap_get_brigade()",
connectname, len);
return ap_proxyerror(r, HTTP_BAD_GATEWAY,
"Error reading from remote server");
} else if (len == 0) {
conf->origin = NULL;
apr_socket_close(sock);
conf->client_socket = NULL;
return ap_proxyerror(r, HTTP_BAD_GATEWAY,
"No response data from server");
}
@@ -604,7 +607,7 @@ int ap_proxy_http_handler(request_rec *r, char *url,
/* If not an HTTP/1 message or if the status line was > 8192 bytes */
if (response[5] != '1' || response[len - 1] != '\n') {
apr_socket_close(sock);
conf->origin = NULL;
conf->client_socket = NULL;
return ap_proxyerror(r, HTTP_BAD_GATEWAY,
apr_pstrcat(p, "Corrupt status line returned by remote server: ", response, NULL));
}
@@ -754,10 +757,7 @@ int ap_proxy_http_handler(request_rec *r, char *url,
*/
if (close) {
apr_socket_close(sock);
conf->origin = NULL;
}
else {
origin->keptalive = 1;
conf->client_socket = NULL;
}
return OK;